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VDI Wissensforum GmbH - Gleit- und Wälzlagerungen 2023

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VDI Wissensforum GmbH (ed.)

Gleit- und Wälzlagerungen 2023

Series: VDI-Berichte

Volume 2415 2023

Results in this title

M. Busch Numerical simulation of rotor and gas-film dynamics in Schaeffler’s foil air bearings S. 221-234

„… complex features make it difficult to design the rotor‐bearing system. It is therefore necessary to support the engineering process with simulative methods, in order to optimize the bearing in terms of load‐carrying capacity, stability and friction. The current paper recapitulates different model strategies from the literature which are used in …” „… . The top foil is more deflected towards the bearing center because it is sucked by the vacuum. This effect is not considered by the models because it is not significant for the calculation of the load‐carrying capacity. Since the pressure is very low in the vacuum zone, the influence on the bearing loads is negligible. Fig. 7 …” „… shows the load‐carrying capacity of the test bearing according to Ref. [33]. The minimum film thickness is plotted over increasing load. As can be seen, the …”

J. Dörner, T. Klütsch, Y. Ishibashi, S. Katto Development of Electrical Erosion Resistant Insulation Coating and Overmolding for Bearings in HEV/EV S. 59-78

„… environment, the insulation Test Load (P) / Bearing Capacity (C) VDI-Berichte Nr. 2415, 202368coating must …” „… e-drivetrain bearings are the loads while majority of loads are radial loads, and some loads are axial loads …” „… . 2415, 2023 67Heavy load resistance test: The target of this developed insulation coating bearing is a …”

A. Nestle Bearing Performance Parameter in the design and selection process – and their validity S. 301-320

„… , performance parameter like the dynamic capacity C, the fatigue load limit Cu or the static load rating C0 are …” „… Bearing Performance Parameter in the design and selection process – and their validity Dipl.-Ing …” „… . Albrecht Nestle, SKF GmbH, Schweinfurt Abstract In the design and selection process of bearings …”

H. Grillenberger Wälzlagergeräuschberechnung – Unterschiedliche Phänomene und deren Simulationsansätze S. 267-278

„… load zone during bearing rotation.  Noise excitation of the entire system. Here, the average bearing …” „… also applies to rolling bearings, it is essential to design them regarding their noise characteristic …” „… . It is not only a matter of producing quiet bearings, but the noise must also be predicted, evaluated …”

V. Wittstock, B. Ibrar, M. Dix Experimentelle Verifizierung des hydrodynamischen Drucks in Gleitführungen zur Kontrolle der Schmierung bei hohen Geschwindigkeiten S. 211-220

„… hydrodynamic Load Ca-pacity Generation on a Slideway. JSME International Journal, 1998, Ausgabe C, Vol. 41, S …” „… ] Brizmer, V.; Kligerman, Y.; Etsion, I.: A Laser Surface Textured Parallel Thrust Bearing, Tribology …” „… . 125-133 [5] van Ostayen, R.: Film height optimization of dynamically loaded hydrodynamic slider bearings …”

F. Halmos, M. Bartz, S. Wartzack Schadens- und Ausfallmechanismen bei Wälzlagern unter Schwenkbewegungen S. 321-402

„… , vibration, axial and radial loads, cage speed and failure probability for each component of the bearing …” „… mechanisms in rolling bearings under oscillating motion Fabian Halmos, M.Sc., Dr.-Ing. Marcel Bartz, Prof …” „… (Schwenkwinkel, Schwenkfrequenz, Linien- oder Punktkontakt) getroffen werden. Abstract Rolling bearings under …”

doi.org/10.51202/9783181024157

VDI Wissensforum GmbH - International Conference on Gears 2022

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VDI Wissensforum GmbH (ed.)

International Conference on Gears 2022

Series: VDI-Berichte

Volume 2389 2022

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M. Zalfen, J. Lovenich, O. Malinowski, C. Brecher, J. Brimmers, S. Neus, S. Stark, D. Kruger Test rig concept for high power VHCF gear testing S. 485-498

„… turbofans and standards for tooth root load capacity [1; 4; 5; 9; 11; 13; 16] VDI-Berichte Nr. 2389 …” „… in the VHCF area are described and existing concepts for the investigation of load capacity are …” „… , the limiting number of load cycles for tooth root load capacity tests is NG,AGMA = 107 and according …”

E. Lamaj, J. Blomeke, F. Rudolph, J. Hermes A comprehensive, fully parametrized calculation model for improved helical-hypoid gearbox efficiency S. 825-836

„… velocity components in seconds. These are used to calculate load bearing capacity and efficiency based on …” „… to optimize the gearbox efficiency and load capacity. 1. Full Factorial Gear Unit Evaluation As a …” „… properties. The load capacity of each machine element is calculated by individual analytical calculation …”

M. Furst, J. Gotz, M. Otto, K. Stahl Automation of gearbox design S. 787-802

„… for the higher loaded locating bearing, since the load capacity typically increases with the diameter …” „… available to evaluate the load carrying capacity of all key components of a simple gear train, namely …” „… calculation of the shaft load carrying capacity to directly adjust the shaft’s diameter and length values. The …”

D. Zorko, Z. Bergant, B. Černe Potential of woven carbon fiber reinforced polymer composite gears S. 1071-1082

„… by injection molding. To increase the load-bearing capacity and wear resistance, short reinforcing …” „… composite/composite combinations of driving and driven gears were tested. An increase in load-bearing capacity of …” „… to their high potential for further increasing load-bearing capacity and wear resistance compared to …”

P. Rodel, R. Spieler, M. Indenbirken, T. Nuisl Holistic friction optimization of transmissions – a significant contribution for sustainability S. 731-744

„… , targeted, and application-oriented design regarding load capacity, acoustics (NVH) and energy efficiency …” „… reaction forces are supported by the bearings. The calculated load distribution is influenced by …” „… complete load distribution for all machine elements, e.g. bearings and gears. From load distribution to …”

J. Gotz, F. Siglmuller, M. Furst, M. Otto, K. Stahl Experimental investigation of the dynamic load sharing of planetary gearboxes S. 409-420

„… sector. Aerospace applications in particular benefit from a full use of the load capacity potential to …” „… taken into account in the standard calculation of the load capacity of planetary gearboxes by the mesh …” „… “, Mechanism and Machine Theory, Jg. 111, S. 21–38, 2017. [15] ISO 6336-1: Calculation of load capacity of spur …”

B. Reetz, T. Munch, W. Kappeler Challenges for lead-free brass alloys in worm gears S. 1467-1488

„… different effects, the load-bearing capacity of worm gear sets depends to a large extent on the prevailing …” „… compositions, microstructures and mechanical and thermal properties contribute to the load-bearing capacity of …” „… friction layers lead is incorporated into friction layers [25], thereby increasing load capacity and …”

W. Wagner, S. Schumann, B. Schlecht Enhanced loaded tooth contact analysis of hypoid gears within a multi-body-system simulation S. 357-370

„… capacity of gear stages within complex drivetrains under varying external loads, multi-body-systems (MBS …” „… characteristics and considerably reduce the load capacity. VDI-Berichte Nr. 2389, 2022 357Since meshing forces …” „… analytically determine the axial position under load and therefore the load capacity of a hypoid gearing. With …”

U. Kissling Generation of a torque spectrum from measured torque-speed-time data S. 533-544

„… , “Calculation of load capacity of spur and helical gears — Part 6: Calculation of service life under variable …” „… load“. [2] ISO 6336-1,2,3,5, 2019, “Calculation of load capacity of spur and helical gears — Part 1, 2 …” „… software, 2021, www.KISSsoft.com. [8] ISO 10300, 2014, “Calculation of load capacity of bevel gears …”

E. Lothman, M. Hein, U. Steiner Increased load carrying capacity of gears through optimized steel performance, surface conditions and processes S. 637-650

„… Increased load carrying capacity of gears through optimized steel performance, surface conditions …” „… examines the potential to further increase load carrying capacity of gears by using steels with improved …” „… with surface treatments can substantially increase load carrying capacity on gears. The bending fatigue …”

L. Maccioni, F. Concli, C. Paschold A Novel Concept of Nested Cycloidal Speed Reducer S. 969-984

„… bearing power losses can be subdivided into no-load (0) and load-dependent (?) losses. Various calculation …” „… gearbox is strongly affected by its lubricant and component temperatures such as for the gears or bearings …” „… ). ? ? ? ? ? ? ? (1) They are usually caused significantly by the gears (?) and bearings (?), and by contacting seals …”

D. Park, A. Rezayat, Y. Gwen Gear design optimization for multi-mesh and multi-power flow transmissions under a broad torque range incorporated with multibody simulations S. 849-862

„… , Calculation of load capacity of spur and helical gears, 2019. [6] Radzevich, S. P. (2016), “Dudley's handbook …” „… 849variable approach considering various key aspects such as transmission error, bearing forces …” „… operating conditions where loads vary. Artoni et. al. [3] proposed a gear optimization methodology to …”

B. Legrady, M. Taesch, G. Tschirschnitz, C. F. Mieth Prediction of churning losses in an industrial gear box with spiral bevel gears using the smoothed particle hydrodynamic method S. 651-664

„… to dominant no-load bearing losses which require higher resolutions, the absolute values are …” „… Sufficient and reliable lubrication is vital to avoid gear and bearing failure under various operating …” „… can come with excessive load-independent power losses. Current methods for estimating churning losses …”

P. Mahendra Rao, S. Foletti, L. Bonaiti, C. Gorla, S. Beretta, F. Concli Mode III threshold under rolling contact fatigue and development of a test gearbox for planet gears S. 499-510

„… . Calculation of load capacity of spur and helical gears—Multiple parts. Standard. Geneva, CH: International …” „… : International Organization for Standardization, June 2008. 19. ISO281:2007. Rolling bearings—Dynamic load …” „… Contact Fatigue (RCF) in integrated thin-rimmed planetary gears and its integrated bearings, and the …”

M. Steinbacher, T. Boyraz, R. Fechte-Heinen, G. Hellenbrand Heat treatment development for the new steel grade X20NiCrAlMoV6-5-2-1 for high performance gear wheel application S. 891-902

„… bearing and gear materials are affected. The high temperature loads in service can impact the …” „… and therewith the strength and the load capacity of the components. Especially for gear application …” „… hardness of more than 59 HRC is required to achieve best load capacity of gear wheels. Therefore the base …”

J. Vorgerd, P. Tenberge, M. Joop Scuffing of cylindrical gears with pitch line velocities up to 100 m/s S. 903-914

„… scuffing at pitch line velocities up to 100 m/s is presented. The scuffing load capacity depending on the …” „… an accuracy superior to the existing standards for calculating the scuffing load capacity of …” „… calculation for the scuffing load capacity is given in ISO 6336 [1, 2] and AGMA 925 [3]. However, ISO 6336 …”

C. M. Illenberger, T. Tobie, K. Stahl Operating behavior and performance of oil-lubricated plastic gears S. 1117-1132

„… . Experimental investigation of flank load carrying capacityTo investigate the damage mechanism and fatigue …” „… to theoretical investigations on the tooth flank load carrying capacity, comprehensive measurements …” „… for plastic gears. Experi-mental investigations on the tooth flank load capacity by means of …”

N. Blech, T. Tobie, K. Stahl, C. Guntner, S. Schurer Material influence on mechanical properties of gears with alternative microstructures S. 265-280

„… increase the load carrying capacity of gear components. Beside predominantly martensitic surface layers …” „… micro-structures on the gear load carrying capacity. For this purpose, gears made of 18CrNiMo7-6 were tested with …” „… regard to their load carrying capacity. 18CrNiMo7-6 is a case hardening steel like 20MnCr5, too, which is …”

F. Muller, S. Schumann, B. Schlecht Innovative tooth contact analysis with non-uniform rational b-spline surfaces S. 171-184

„… the transferable power as well as the efficiency and load capacity of those compo-nents. At the same …” „… , the local load capacity regarding flank and root can be determined. In addition, this simulation tool …” „… significant influence on the Hertzian pressure, which in turn is the basis for the load capacity against …”

N. Sagraloff, T. Tobie, K. Stahl Suitability of the test results of micropitting tests acc to FVA 54/7 for modern practical gear applications S. 469-484

„… Center (FZG), Technical University of Munich, Garching Abstract A high load carrying capacity …” „… that a lubricant with a sufficient micropitting load- carrying capacity be used to avoid micropitting …” „… . Lubricants usually contain additives, which also have a strong effect on micropitting load-carrying capacity …”

A. Eric, D. Olveda, T. Froschmeier, V. Schulze Local pitting fatigue concept with EHL simulation for case hardened gears in electrical drives S. 133-144

„… endurable load capacity. These developments have renewed the demand for improved simulation approaches for …” „… 404-405. 2018, pp. 133-142. [7] ISO 6336: Calculation of load capacity of spur and helical gears. [8 …” „… gears and bearings. Early approaches like e.g. [1] and [2] are inspired by bearing design methods and …”

R. Chen, D. Qin, C. Liu Study on electromechanical coupled dynamic characteristics of transmission system of wind turbine S. 763-778

„… turbine drive system is not only affected by random wind loads for a long time but also by the …” „… variable speed and variable-load conditions, a finite element model of the generator, and voltage vector …” „… ), Multi-source excitation, Variable speed and Variable load. Introduction As a kind of green, renewable energy …”

L. Hildebrand, F. Dangl, M. Sedlmair, T. Lohner, K. Stahl CFD analysis on the oil flow of a gear stage with guide plate S. 677-694

„… no-load loss of the gearbox includes the losses from the gears, the bearings, and the ones from the rotary …” „… determine the no-load losses from bearings and sealings [8]. The transparent front cover of the test gearbox …” „… .: Strömungsmechanik. Springer Fachmedien Wiesbaden, Wiesbaden (2015). [37] Otto, H.-P.: Flank load carrying capacity …”

R. Longato, M. Turci The effect of temperature on the SN curve for bending stress measured on a new test rig for plastic gears S. 1209-1222

„… load-carrying capacity. 2014. VDI-Berichte Nr. 2389, 20221222 …” „… : Mounting of gears on the test rig. The gears are mounted on supports made using SFK bearings for high …” „… the drive shaft/bearing system is measured with the first setting tests, in relation to the applied …”

A. Beinstingel, M. Heider, B. Pinnekamp, S. Marburg Gear mesh excitation and non-uniform rational B-splines S. 91-102

„… , Düsseldorf, 1983 [16] ISO, 2006, “Calculation of load capacity of spur and helical gears,” ISO 6336:2006 [17 …” „… actual power transmission process leads to oscillating forces on the shafts and bearings [1, 2]. These …” „… according to this topic can be also found in [6] and [7]. 2. Gear Mesh Excitation and Load …”

A. Turich Gear hard finishing with up to 100% in-process inspection S. 1583-0

„… longer than the actual production time, and the limited measuring capacity available. In hard fine …” „… inspection room capacity. After inspection, a decision must be made whether a correction is necessary and the …” „… like? Ideally, all parts could be inspected immediately after they have been produced (Fig. 1), bearing …”

H.-J. Dennig, L. Zumofen, A. Kirchheim, S. Winterberg, D. Stierli Increasing the safety against scuffing of additive manufactured gear wheels by internal cooling channels S. 1345-1364

„… tearing off or vaporizing. The calculation of the scuffing load capacity is carried out according to DIN …” „… 3990-4 [18]. In comparison to the tooth root safety and flank safety, the scuffing load capacity is time …” „… that scuffing will not occur [19]. The scuffing load capacity test is ideally a running test according …”

W. Kassem, M. Oehler, B. Sauer, S. Schmidt, J. Hausmann Investigation of the time-dependent behavior of plastic gears with local tribological simulation S. 1281-1294

„… testing to determine the gear losses as well as the load carrying capacity of plastic gears paired with …” „… entire flank, whereby the load-bearing area of the tooth flank becomes larger with increasing wear and a …” „… work, the performance of steel - plastic gear pairs under load is investigated. Therefore, a …”

F. Reinle, D. Mangherini, E. Morgano, A. Bongiovanni Combining improved gear efficiency and improved fatigue performance through mass finishing S. 609-620

„… flank load carrying capacity and low roughness can be achieved. Power density is impacted negatively by …” „… rolling contact like bearing applications for decades, classical gear finishing remained still on the …” „… at 6.9 mm²/s at 100 °C. The reference gear failed at load stage 10 on VDI-Berichte Nr. 2389, 2022614 …”

A. Kubo, A. Ueda, R. Uehara Development of IP-bevel gears for industrial operation S. 343-356

„… transmitting action. IP-bevel gears have therefore a bigger margin for increasing the load carrying capacity …” „… gears have therefore a bigger margin for increasing the load carrying capacity in principle in …” „… conventional bevel or hypoid gears. 3. Improvement of gear design and test rig for load carrying capacity …”

S. A. Bohme, J. Keski-Rahkonen, T. Komssi A standardizable approach to tooth flank fracture S. 371-388

„… capacity of spur and helical gears - Part 4: Calcu-lation of tooth flank fracture load capacity …” „… : https://doi.org/10.3390/met12020289.[19] ISO. ISO 10300-2:2014 - Calculation of load capacity of bevel gears …” „… (AWT) (1989),pp. 332–348.[30] ISO. ISO 10300-3:2014 - Calculation of load capacity of bevel gears …”

K. Daubach, M. Oehler, B. Sauer Wear simulation of worm gears based on an energetic approach S. 329-342

„… and high load bearing capacity is required. These characteristics are combined with a compact design …” „… ? ∗ ⋅ ? ⋅ ? (2) VDI-Berichte Nr. 2389, 2022330Load is described in the tribological simulation with a local line …” „… load wb ap-plied on each contact line segment with an individual length bH. The tooth contact of each …”

I. Hong, Z. Teaford, A. Kahraman A comparison of gear tooth bending fatigue lives from single tooth bending and rotating gear tests S. 45-74

„… fatigue is a catastrophic failure where almost instantaneously the load carrying capacity of the gear is …” „… ., 2016, “Increased Tooth Bending Strength and Pitting Load Capacity of Fine-Module Gears,” Gear Technol …” „… of gears. The first, is that gear teeth act as cantilever beams when supporting load. This creates a …”

doi.org/10.51202/9783181023891

VDI Wissensforum GmbH - International Conference on Gears 2017

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VDI Wissensforum GmbH (ed.)

International Conference on Gears 2017

Series: VDI-Berichte

Volume 2294 2017

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L. J. Stocco, R. Gloeckner Smashing the efficiency barrier – A practical comparison of planetary and orbitless gear-heads S. 319-330

„… that load capacity is marginally improved by using ball instead of plain bearings, and greatly …” „… the planet bearings to the carriers induces a planet yaw torque that reduces the load capacity of an …” „… load capacity and significantly higher efficiency than the Planetary gear-head. 2. Anatomy of an …”

B. Sievers, M. Berger, J. Hermes Technical guideline for the quality determination of bronze S. 479-490

„… method for calculating the load bearing capacity of helical-worm gear units is defined by DIN 3996 [3 …” „… Deviating Load-Bearing Capacity for Continuous-Casting Materials The following examples present results …” „… presumed to have the same load bearing capacity according to [3]. The CuSn12Ni2-C-GC material is an …”

Y. Shen, S. Rinderknecht, M. Hoppert General modelling method of power losses in transmission with parameter identification S. 905-916

„… oil churning losses [10]-[12]. Same as the gear losses, the bearing losses are composed also of load …” „… to directly model the load dependent power losses and load independent losses of bearings, because …” „… ) where is the load independent bearing power losses and is load dependent bearing power losses. The …”

M. Baar, P. Oster, T. Tobie, K. Stahl Theoretical investigations of the load distribution of small sized crown gear sets different material pairings S. 1593-1610

„… distribution is illustrated. Experimental tests were made to determine the load carrying capacity of small …” „… derivation of a local load distribution to crown gears in consideration of the shaft bearing system Based …” „… on the load carrying capacity of crown gear sets Fig. 5.1 shows the used test rig in detail as a …”

A. Lohrengel, M. Heß Thrust cone bearings provide increased efficiency for helical gear units at moderate speed levels – Indications for possible energy saving potential in an expanded field of application S. 231-242

„… are usually combined with journal bearings, where the axial load compensation supersedes one axial …” „… bearing types. Instead of tapered roller bearings, which are distinguished by their high axial load …” „… carrying capacity but generate a relatively high energy consumption, more efficient ball bearings might be …”

T. Jurkschat, T. Lohner, K. Stahl Improved calculation method for load-dependent gear losses S. 893-904

„… of the load-dependent gear losses is achieved by considering load-dependent bearing losses derived …” „… supported by cylindrical bearings of type NU406/NJ406. The appearing axial loads of helical gears show an …” „… load-dependent gear losses from the experimental results, separate measurements of the bearing losses at the FZG …”

M. Daffner, M. Otto, K. Stahl Elastic deformation of a hypoid gearbox – Measurements on a static test rig to validate the calculated elastic deformation behavior S. 683-694

„… capacity in the gear mesh can be achieved when the contact load is well distributed. Designing an adequate …” „… load distribution is a necessary condition to assess the load capacity of hypoid gear stages …” „… . Karsten Stahl, Gear Research Centre (FZG), Technische Universität München Abstract High load carrying …”

J. W. Vriesen Topographical tooth modifications in planetary gears for reduction of the noise excitation without load capacity loss – Optimization of complex systems capable of oscillation S. 185-196

„… load capacity loss Optimization of complex systems capable of oscillation Dr.-Ing. Johannes W …” „… stage over the power range of the wind turbine without load capacity loss. VDI-Berichte Nr. 2294 …” „… loss of load carrying capacity, VDI-No. 2199, ISBN 978-3-18-092199-0, 2013 [11] Vriesen, Johannes W …”

P. Norgauer, W. Sigmund, D. Kadach, K. Stahl Comprehensive simulation methods for crossed helical gear sets with the main focus on the calculation of contact patterns S. 353-362

„… calculation functions: Main geometry Tolerances (ISO 1328, DIN 3961, DIN 3974) Load carrying capacity …” „… sets. SCHRAD2 includes inter alia the calculation of geometry, tolerances, load capacity and contact …” „… , SCHRAD2 determines the axial and radial bearing loads. Regarding crossed helical gears, there is no …”

A. Miltenović, M. Banić, Ž. Mišković, R. Mitrović, V. Miltenović Prediction of heat generation in transmission bearings by application of FEM S. 1199-1208

„… Prediction of Heat Generation in Transmission Bearings by Application of FEM Assis. Prof …” „… Belgrade, Serbia Abstract Heat generation in bearings is manifested by the power losses of the …” „… affects the bearings geometrical characteristics. Heat generation has an adverse effect as well on the …”

H. Hansson, H. Alm, A. Eng, M. Olsson Beveloid gears in planetary gear trains for increased Grundström, power density and reduced backlash Stensson, S. 579-590

„… increased load carrying capacity for beveloid gears compared to spur gears [7] is not considered in this …” „… , Växjö, Sweden 2017 [7] J. Henser, “Calculation of the Tooth Root Load Carrying Capacity of Beveloids …” „… gears in planetary gear trains it is possible to achieve very equal load sharing between the planet …”

A. L. Kapelevich, Y. V. Shekhtman Root fillet optimization of thin rim planet gears with asymmetric teeth S. 741-750

„… to maximize load capacity. The sunplanet gear engagement loading is selected for the root fillet …” „… stress values for different bearing roller positions, load applications, and rim tooth thickness values …” „… inside by rollers and a carrier shaft. Under identical load conditions, thin rim planet gears (Fig. 1 …”

J. Thomas, C. Wirth Determination and improvement of bevel gear efficiency by means of loaded TCA S. 707-718

„… conflicts between load capacity, noise (NVH) and gear efficiency are shown as well. 1. Basic …” „… conditions, load capacity (pitting, bending, subsurface fa- VDI-Berichte Nr. 2294, 2017710 tigue), and other …” „… for bevel and hypoid gears. It is used in his scuffing load capacity calculation based on local TCA …”

C. Zhang, H. Liu, C. W. Yao, Y. Li Study of vibration for spur gears of tooth profile modification and experimental validation of modification method S. 527-538

„… gear meshing vibration, the vibration can be reduced, and the bearing capacity and stability of the …” „… low-speed and light-load condition, the vibration amplitudes are enhanced by modification, but for …” „… high-speed and heavy-load condition, the gear vibration amplitudes are reduced greatly. The optimum …”

J. J. Liou, S. Rakuff The development of worm drives S. 503-516

„… ; therefore, the load capacity for worm drives is relatively limited and friction greatly affects the …” „… Polyetheretherketone (PEEK) Good load-carrying capacity Polyamide PA 4.6 Inferior load-carrying capacity [33] Steel …” „… drives [37] Integrated contact analysis for load capacity estimation: In steel-bronze worm drives, the …”

U. Kissling, M. Stangl The documentation of gearbox reliability – an upcoming demand S. 1051-1062

„… , Rolling bearings — Dynamic load ratings and rating life, ISO, 2007 [4] ISO 6336, Part 1-6: Calculation of …” „… load capacity of spur and helical gears, ISO, 2006 [5] AGMA 6006-B??: Revision of the Standard for …” „… bending, pitting and scoring, but bearing strength is expressed in lifetime. So how is it possible to …”

M. Hein, T. Tobie, K. Stahl Test method for time-scaled fatigue tests of gear transmission systems S. 1073-1084

„… capacity of different damage mechanisms referring to the significant load levels which may occur in real …” „… capacity of spur and helical gears — Part 6: Calculation of service life under variable load (2006). [2 …” „… , Aachen, S. 43–52 (2009). [9] Höhn, B.-R.; Stahl, K.; Oster, P. et al.: Flank-load-carrying capacity of …”

C. Güntner, T. Tobie, K. Stahl “Alternative” microstructures and their influence on mechanical properties of case-hardened gears S. 399-410

„… martensitic layer. The central question is how they influence the load carrying capacity of gears. A former …” „… amount of retained austenite can increase the flank load carrying capacity in comparison to “standard …” „… project, the influence on the load carrying capacity of gears made out of the material 20MnCr5 was …”

M. McCormick, J. Michaud Isotropic superfinishing of high hardness steels – How using a custom REM ISF® process as a quality control, defect remediation, and isotropic superfinishing procedure can increase the performance of... S. 163-172

„… contact fatigue resistance, scuffing or scoring resistance, increases to load carrying capacity …” „… as an inferior surface relative to contact fatigue, scuffing, and load carrying capacity. The …” „… load carrying capacity and loss of lubricant performance, and there are many strong arguments that C64 …”

H. Schreiber, T. Röthlingshöfer Kinematic classification of a gearbox comprising separate thrusted teeth and its advantages regarding existing approaches S. 267-280

„… resulting bearing capacity. Furthermore, simple cylinders can substitute the hollow wheel. Disadvantageous …” „… spline there is a bearing on an elliptical disc, the wave generator, Fig. 1.2-1 [5]. Now the wave …” „… , right hand turn Bearing Flex Spline Driven side, left hand turn Circular Spline Rigid VDI-Berichte Nr …”

E. Tamura, R. Nemoto, N. Seyama, E. Tanaka Load carrying capacity of crossed helical gears with high contact ratio S. 1139-1144

„… Load Carrying Capacity of Crossed Helical Gears with High Contact Ratio Prof. E. Tamura, Prof …” „… load carrying capacity of crossed helical gears. 1. Introduction Fig. 1: Contact state on …” „… pressure angle results in lower contact stress and higher load carrying capacity. To protect against …”

Titelei/Inhaltsverzeichnis

„… calculation of micropitting load capacity acc. T. Tobie, to ISO/TR 15144-1 K. Stahl D. Ghribi, Shot peening …” „… reduction of the noise excitation without load capacity loss – Optimization of complex systems capable of …” „… – Geometry Z. Roth High load capacity gear root fillet contour with a 719 J. Opferkuch bézier curve R. Saito …”

A. Mihailidis, G. Korbetis, N. Drivakos, I. Nerantzis Finite element method based analysis of planetary gear systems considering backlash and manufacturing deviations S. 75-82

„… . Nerantzis, BETA CAE Systems Abstract The load carrying capacity of gear transmissions depends …” „… shown include stress distribution and deformation, as well as load sharing under quasi-static …” „… . Furthermore, the favourable impact of a floating, self-centring sun on the load distribution was shown …”

S. Jain, B. James A simulation approach to calculate gear dynamic-factors for high-speed applications S. 649-658

„… caused by the increase in gear mesh and bearing stiffness values with load. Fig. 7 also shows that as …” „… CENTER. [6] ISO 6336: Calculation of load capacity of spur and helical gears. [7] AGMA 2001 …” „… loads on gear fatigue life. One commonly used method to consider the effect of dynamic loads on gear …”

J. Papies Load distribution in planetary gears considering effects of manufacturing tolerances with a statistical approach S. 783-794

„… elements including the bearing clearance. Taking into account all the resiliences, the load distribution …” „… tolerance could be potentially expanded without a loss of load carrying capacity of the toothing. First of …” „… Load distribution in planetary gears considering effects of manufacturing tolerances with a …”

I. Atanasovska, H. Abderazek Comparative analysis of few new procedures for spur gears tooth profile optimization with different methods and aspects S. 1169-1176

„… tooth profile parameters have a great effect on the load capacity, working life, efficiency and dynamic …” „… the research community in recent years in order to reach the gears with high load capacity and in same …” „… nominal load effects on gear load capacity using the finite element method. Proceedings of the …”

E. Erkilic, Z. Burcay Optimizing tooth proportions to improve topland Saribay balance in aerospace bevel gears S. 447-456

„… performance and load capacity requirements of aerospace bevel gears make smaller module designs more …” „… depth adversely affects the load carrying capacity of the gear set, which is undesired. Graphical …” „… %15 of the original value in order to improve the load carrying capacity of the gear set. First …”

Foreword S. 1-4

„… required for the load bearing capacity, life expectancy and failure probability as well as better test …”

M. Oehler, B. Magyar, B. Sauer A new standardizable calculation method to predict the efficiency of worm gear drives S. 363-372

„… . Ruhr-Universität Bochum 1991 [4] ISO/TR 14179-2: Gears - Thermal capacity - Part 2: Thermal load-carrying capacity …” „… division curves for the load-carrying contact ratio derived with a self-developed software, the rate of …” „… of the bearing losses PVL is carried out according to the methods of the bearing manufacturers, the …”

E. Chiappetta, D. Morrey Non-standard spur gear tooth profiles for improved epicyclic gear system performance in low speed applications S. 825-834

„… working pressure angle, on load carrying capacity is systematically analysed through a parametric study …” „… profile shift on tooth flank load capacity and bending stress is studied [2]. Based on these results …” „… high pressure angle spur gear concept which has been shown to increase the load carrying capacity and …”

K. Mao, V. Goodship, N. Madhav, R. Ramakrishnan, P. Langlois Experimental Investigations of Polymer Composite Gear Performance S. 1625-1636

„… polymer gears’ are quite different with regards to both failure modes and load capacity. For acetal gears …” „… fibre reinforced PEEK and nylon gears [11-14] showed that the load capacity under high running …” „… load capacity increase of over 40% when compared to unreinforced acetal gears as shown in Fig.8. The …”

C. Brecher, C. Löpenhaus, M. Schroers, T. Frech, P. Scholzen Optimization of NVH behavior of gears by alternative gear materials S. 539-552

„… operational behavior of gears. This includes the gear load carrying capacity and the excitation behavior in …” „… gear material leads to an increased flattening of the contact area under load as well as to a higher …” „… line). The next step is the definition of target reference load points, at which the transmission …”

M. Takahashi, T. Itagaki, N. Maeda, H. Takahashi Evaluation of developed micro-gear endurance test system and basic study on load-carrying characteristics of micro-spur-gears S. 243-252

„… failure modes of the micro-gears, and an example of load-capacity, was determined for phosphor bronze …” „… ] JIS G 4404:2015: Alloy tool steel [6] ISO 6336-3:2006: Calculation of load capacity of spur and …” „… Evaluation of developed micro-gear endurance test system and basic study on load …”

J. Reißmann, E. Leidich Computation of the tooth root strength of Worm Wheels with a calculation program based on local stresses S. 373-394

„… is, the load capacity has to be calculate out of the numerical computed stresses with the FKM …” „… guideline [3]. The results were shown in Figure 15. A load capacity of 1 means utilized. This is the …” „… boarder of the VDI-Berichte Nr. 2294, 2017 379 fatigue strength. The maximum load capacity is nearly 1 …”

B. Guilbert, P. Cutuli, P. Velex Hybrid dynamic model of hollow thin-rimmed gears S. 623-634

„… contact conditions between the mating teeth and also avoids numerical artefacts in tooth load …” „… represented in Fig. 1 is employed. Housings and bearings are considered as additional stiffness elements and …” „… to avoid numerical errors leading to numerical spikes in tooth load distributions arising from …”

T. Frech, C. Löpenhaus, F. Klocke Influence of the contact conditions in cold rolling on the density profile of powder metallurgical (PM) gears S. 1265-1276

„… , porosity remains in the component and reduces the load-carrying capacity. By densifying the highly loaded …” „… to increase their local density and, therefore, the load-carrying capacity [2]. PM gears are …” „… the load-bearing cross section while also being internal notches in the material, the mechanical …”

Y. Cai, L. Yao, Z. Xie, J. Zhang, C. Peng Influence analysis of system parameters on characteristics of the nutation drive with double circular arc spiral bevel gears S. 435-446

„… °, it is not conducive to the improvement of bearing capacity of the nutation gear and only the offset …” „… load increases. Therefore, the optimum range of the nutation angle is approximately 5° to 15 …” „… meshing force will be discussed. To simplify the calculation, the external load on the system is modeled …”

B. Bauer, R. Hambrecht, A. Kube Thermal analysis and optimization of gearboxes by simulation S. 917-926

„… load-carrying capacity; ISO copyright office Case postale 56; CH-1211 Geneva 20 [2] Mauz W.: Hydraulische …” „… Hambrecht, Andreas Kube, Siemens AG, Voerde Abstract With increasing mechanical power capacity of …” „… energy balance can only be kept up, if the temperature rises or the cooling capacity of the surface is …”

J. Lohmiller, J. Hoffmeister, J. Hermes, M. Ansorg, H. Dhonau Development and investigation of austempered ductile iron (ADI) for thick-walled gear components S. 963-976

„… 100 kN load capacity according to DIN EN ISO 6892 with a velocity of 0.00025 1/s. At least four …” „… defined by the number of planets sharing the load. Possible applications are in drive units, e.g. for …” „… loading capacity making conventional nodular graphite iron unfeasible. The component under investigation …”

C. Gosselin, E. Fritz, L. Seiler CnC manufacturing of circular faced cylindrical gears S. 1343-1352

„… being curvilinear, thereby increasing the load carrying capacity and improving lubricating conditions at …” „… the load carrying capacity and sensitivity to positional changes of the gear set. For a given …” „… self-centering characteristic, where only one member need be located axially with a small thrust bearing. This …”

C. Brecher, C. Löpenhaus, R. Greschert Influence of the grinding process on the formation of boundary layers on gears S. 1427-1438

„… layer and the running behavior of the produced parts. Subsequently, tests of load carrying capacity and …” „… studies on tribological surface modifications formed on roller bearings under controlled lubrication …”

V. Angelopoulos, M. Hirsch PM gear rolling simulations using advanced plasticity material model and improved initial conditions S. 1277-1288

„… ., S. N.: Effect of surface rolling on load bearing capacity of pre-alloyed sintered steel gears with …”

doi.org/10.51202/9783181022948

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Dritev 2023

Series: VDI-Berichte

Volume 2420 2023

Results in this title

J. Merckling Comparison of Efficiency of Tapered Roller Bearings and Deep Groove Ball Bearings in Electric Vehicle Intermediate Shaft Applications S. 339-348

„… efficiency  Increased power density to increase capacity-to-envelope size ratio Timken ePDFE bearings …” „… load-carrying capability and improve efficiency  Micro-geometry design improvements for higher bearing …” „… and weight reductions ePDFE bearings were designed to have the same capacity as the DGBB but in a …”

L. Bayoux, K.-L. Kimmig, D. Reitz Has the potential in terms of weight, installation space, and function already been exhausted for hybrid transmissions? S. 205-220

„… increase the overall efficiency of hybrid and e-drive transmissions, newly developed measures for bearings …” „… operation if required via an additional load on the generator. For parallel operation, the clutch is closed …” „… additional drive (boosting) or for generator operation (load point shift). VDI-Berichte Nr. 2420, 2023210 …”

A. Kappes, S. Frei, P. Noone, Stephan Rinderknecht Development and Design of a Range Extended four-speed Two-Drive-Powertrain S. 253-280

„… battery capacity) and the Ioniq Electric from Hyundai (13.8 kWh/100km consumption, 311 km WLTP range, 1650 …” „… kg curb weight, 38.3 kWh battery capacity) [5]. Productions of both vehicles were terminated without …” „… WLTP of more than 500 km is the ID.3 Pro S from VW with its net 77 kWh battery capacity. However, this …”

J. Gindele, F. Faistauer The Future of BEV: High Performance Without Compromising Driving Efficiency S. 37-44

„… partial load. Various measures such as downsizing/downspeeding, lean operation, etc., and of course …” „… load. Generalizing, it can be said that many electric motors have their best load points at around 30 …” „… percent of the load, while internal combustion engines often have their sweet spot at around 70 percent …”

M. Magnusson, O. Nicklasson, H. Jacobsson Electric Cross Differential, eXD S. 235-252

„… Abstract Electric vehicles often have a high driveline torque capacity and the ability to generate …” „… . Potential for improved regeneration capabilities Reduced tyre load, enabling the use of narrower tires …” „… from the piston is transferred to the clutch via an axial needle bearing and a thrustwasher. The piston …”

doi.org/10.51202/9783181024201

VDI Wissensforum GmbH - Dritev – Drivetrain for Vehicles 2020

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VDI Wissensforum GmbH (ed.)

Dritev – Drivetrain for Vehicles 2020

Series: VDI-Berichte

Volume 2373 2020

Results in this title

F. Völkel, M. Tietz, A. Schamin, S. Giehl Rolling into the future – Bearing solutions for electric mobility

„… on the transmission input shaft, however, the static load carrying capacity of the ball bearing may …” „… bearings and high-speed roller bearings are needed, particularly when high loads have to be transferred …” „… 1.3 cage vs. HSMB 2.0 cage 2.2. The High-Speed Cylindrical Roller Bearing In most cases, the load …”

T. Casper, G. Spengler, M. Bromberger The high-efficiency fully electric drivetrain of the new Porsche Taycan

„… load-bearing behavior of the gearing. All components, including those of the actuators, were improved and …” „… disadvantages. In addition to the weight reduction, the load carrying capacity was increased, the efficiency …” „… also be applied to the front axle due to the low center of gravity and the almost even axle load …”

H. Gürbüz, S. Ott, A. Sutschet, J. Kern Highly efficient clutch system for multispeed BEV

„… bearings are not suitable due to the high loads caused by speed and contact pressure. The force is …” „… . ∗ ∗ The coefficient of friction coefficient µ, circumferential speed and bearing load have the greatest …” „… therefore introduced into the clutch via a plain bearing. In the present paper, the functional capability …”

K. Sakai, T. Kishimoto, T. Kobayashi, T. Maekawa, T. Shinohara, M. Ogawa Development of the new chain CVT for middle capacity

„… Development of the new chain CVT for middle capacity Kentaro Sakai, Takuya Kishimoto, Takahiro …” „… Abstract The newly developed chain CVT for middle capacity, which is characterized by compactness, higher …” „… features of the new CVT. 1. Preface The chain CVT for middle capacity has been much improved on its …”

M. Deiml High speed electric drive system – A solution for the next generation E-cars

„… increase the transverse contact ratio. A lower pressure angle leads to a lower tooth load capacity and …” „… the bearing power loss and the speed capacity. System Test Results E-Motor tests have been …” „… where the costs are increasing again, because of special bearings, lamination material, windings etc …”

S. Reuter, H. De Keyser, M. Doppelbauer Performance study of a PMSM with molded stator and composite housing With internal slot cooling – resulting in high continuous power

„… high temperatures for long durations. Via sandblasting the part gets deburred and the bearing seats …” „… given deformation. The bearing seat is directly machined into the housing. This is possible, because …” „… high performance thermoset materials have a high resistance to creep, thus the bearing seat does not …”

D. Kieninger, J. Hemsen, G. Witham The highly integrated ModulED drive module – Holistic concept design

„… , gearing variants are formed and the load carrying capacity is verified (C). A macro geometry variant is …” „… serve as input. The transmission load collectives, relevant for the service life and efficiency …” „… selected for further analysis. Based on the gearing geometry, the gear forces and thus all shaft bearing …”

F. Brezger, A. Moser Investigation and potential analysis of shiftable form-locked one-way clutches for hybrid and electric vehicles

„… vehicle. Since it is a component with higher torque capacity, synchronization function in one direction …” „… gear. A first gear allows better accelerations for sportive cars, hill start up with higher loads or …” „… special variant. It has an inherent friction bearing function by centering Inner Race to Outer Race …”

P. Tenberge, A. Alnahlaui E-drive and hybrid-drive with 2 high-speed E-motors and a 2-speed gearbox

„… the cam shafts for the intakeand exhaust valve-systems limit this rotational capacity. But electric …” „… electric motors become very small. However, their heat capacity decreases. Thus, the requirements for the …” „… gearsets the noise excitations arise from the mesh impacts of the elastically deformed teeth under load …”

A. Manelli, F. Filippo Irato, C. Cavallino, R. Gay e-FDU: Concept, develop & industrialization of a novel P4 powertrain – From concept to industrialization of a novel P4 powertrain in 24 month

„… Engagement Maneuver 7 e-FDU Validation 7.1 Under load contact pattern 7.2 Gears fatigue test 7.3 …” „… output shafts of the e-FDU with drive shafts. 7.1 Under load contact pattern Purpose of this test is …” „… capacity, EMA firstly, to respect the given targets. Main obstacle of this test has been the necessity to …”

doi.org/10.51202/9783181023730

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