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International Conference on Gears 2019

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2355 2019

Treffer in den folgenden Teilen:

X. Du, B. Chen, X. Shan Robust force control of series elastic actuator using disturbance observer S. 1111-1122

„… propose a ball-screw mechanism for speed reduction and high compliance springs for SEA designs. The …” „… ball-screw mechanisms have large speed reductions, high efficiency, high tolerance to impact loads and not …” „… . To realize high fidelity force control, a high-gain control method makes system unstable. In this …”

R. Slatter Condition monitoring of gearboxes using magnetoresistive sensors S. 229-244

„… monitoring. The miniaturized dimensions, robustness, high sensitivity and wide bandwidth of …” „… interesting for sensors. For example, TMRbased sensors have an extremely high sensitivity and a very low power …” „… motorsport applications at high rotational speeds and large air gaps (5 mm). Fig. 7: Tooth sensor …”

S. Nowoisky, M. Grzeszkowski, C. Guhmann, J. G. Pelham Monitoring concept study for aerospace power gear box drive train S. 269-286

„… offer advantages over roller bearings for high rotational speeds, impact loading or heavy oscillations …” „… the highest sensitivity to pitting damage can be found. The kurtosis feature of the CWT coefficients …” „… the highest sensitivity to pitting damage of a test gear variant with a comparatively high single …”

J. Tavčar, J. Kos, D. Zorko, J. Duhovnik A multi-criteria polymer gears design optimisation procedure S. 1473-1484

„… gears is their sensitivity to higher temperatures, as well as a variety of failure modes that depend on …” „… . The sensitivity of design parameters on polymer gears acceptance criteria Polymer gears design is …” „… sensitivity of different design parameters is presented in several diagrams below (Fig. 2, 3, and 4). An …”

J. Han, Y. Zhu, X. Tian, L. Xia A method of tooth longitudinal modification for internal gearing power honing S. 1725-1738

„… are widely used in high-speed transmission equipment to meet the requirements of service life …” „… , Hefei, Anhui, China Abstract As a high-efficiency and high-precision gear finishing process, the …” „… , the motion of each axis of the honing machine is expressed as a higher order polynomial function of …”

H. Blettery, D. Talbot, A. Kahraman, H. Xu A methodology for measurement of loaded transmission error of hypoid gear pair with misalignments S. 619-634

„… high-speed measurement of gear transmission error or torsional vibrations with optical encoders”, Measurement …” „… , and demonstrated using a gear pair example from an automotive rear axle unit. A low-speed hypoid gear …” „… constituting their most common and highest volume application. The shaft offset of hypoid gear pairs allows …”

P. Lopez Garcia, S. Crispel, T. Verstraten, E. Saerens, B. Vanderborght, D. Lefeber Wolfrom gearboxes for lightweight, human-centered robotics S. 753-764

„… characterized by a strong need for extreme positioning accuracy and high manipulation speed – in the range of …” „… kept to a minimum, especially in devices following a specific trajectory at high speed. • Lost Motion …” „… have been continuously extending their range of application, taking advantage of their high compactness …”

T. Pinel, J. Bruyere, P.Velex, L. Billet Parametric Study of a 3D trochoidal reducer model with involute profile S. 437-448

„… Abstract In medical, robotic and automotive applications, compact gears motors with high-torque density …” „… needed, speed reducers with cycloidal movements are well developed with circle arc tooth profiles, at …” „… the high precision circle arc tool profile cannot be economically used, or extreme low transmission …”

Z. Zhan, H. Liu, C. Xiang, Q. Yan, H. Li, W. Wei, L. Xu Study of lateral and torsional vibration distribution of two-stage planetary gears based on vibration energy theory S. 1245-1252

„… connecting shafts. Engine excitation is simplified and ignored the high order components. The engine speed …” „… with application to high-speed planetary gears. European Journal of Mechanics- A/Solids, 67, 2018, pp …” „… . Cooley and Parker [9] analyzed the sensitivity of the eigenvalues to model parameters with modal kinetic …”

C. Chevrel-Fraux, R. Fargere, J. Bruyere, P. Velex Modelling of high power geared transmissions, introduction of a filling material S. 903-914

„… . VDI-Berichte Nr. 2355, 2019912 10. Bibliography [1] Küçükay F., “Dynamic behavior of high speed gears”, The …” „… simulate the static and dynamic behaviour of high-speed thin-rimmed gears” journal of sound and vibration …” „… Modelling of high power geared transmissions, introduction of a filling material PhD …”

F. Cura ISO Standard based method for determining a global in-operation dynamic factor KAV in gears subjected to variable velocity and loading conditions S. 689-700

„… relative influence factors for notch sensitivity, surface roughness, size. The calculated stress, again …” „… mesh torque at operating speed respect to the nominal transmitted (design) mesh torque. No other …” „… relative notch sensitivity, relative surface and size factors. VDI-Berichte Nr. 2355, 2019 691 Also …”

A. D. Rauch, C. Wirth An easy-to-use and fast computational model for the prediction of the influence of manufacturing errors on gear transmission error S. 645-656

„… and mesh misalignment under high loading conditions. In low load operating scenarios, however, the …” „… predict the sensitivity of gear designs to manufacturing errors and may aid in choosing a suitable set …” „… LOA. If the load on the meshing gears is high enough the deformations due to tooth bending, the …”

D. Park, F. Santini, A. Rezayat, T. Tamarozzi, J. Pavel Experimental and numerical investigation of helical gear transmission error under gear misalignments S. 355-366

„… higher gear contact friction at this low speed of revolution tested, where Elastohydrodynamic Lubrication …” „… experimental setup to investigate the sensitivity of the gear angular misalignment on TE to give gear …” „… gears to be placed in the desired relative position without adding reaction forces. Four high …”

C. Natali, A. Rezayat, D. Park, P. Jiranek, T. Tamarozzi Analysis of manufacturing variability on the transmission error of an internal gear pair using a multibody framework S. 1099-1110

„… entire system. This results in a considerable level of energy loss and causes higher fuel consumption …” „… dangerous to operate at certain speeds and load conditions [2] [3] . The reliability of gear transmission …” „… of the gear transmission system with a sufficient level of speed and accuracy. Currently, the …”

H. Linke, R. Hess Tooth root bending capacity – An analysis of stress and strength S. 949-958

„… additional reasonable constant mean stress contributes to tooth root stress e.g. in case of high speed gears …” „… caused by centrifugal effects due to high rotational speed or a heavy shrink fit for a thin-rimmed gear …” „… assuming a mean stress sensitivity of M = 0.2 to 0.4 (equation 2). , , , (2) This relationship can even …”

H. Aurrekoetxea, I. Ruiz de Ocenda Experimental and theoretical study of load mesh factor for different boundary conditions in wind gearbox planetary stages S. 835-844

„… load of the highest loaded planet divided by the average load of all planets. This Kɣ is equal to 1 in …” „… ideal conditions (all planets are transmitting the same load), whereas it reaches higher values in real …” „… of 3 times higher in the radial direction than in the tangential direction, so both pin position …”

I. Bae, U. Kissling Comparison of strength ratings of plastic gears by VDI 2736 and JIS B 1759 – In vision of building a new international standard S. 1267-1278

„… gears in high speed and high torque conditions are increasing with the development of high performance …” „… molded. At the same time, there are several drawbacks such as lower accuracy, lower strength and higher …” „… sensitivity to the operation environment such as temperature and humidity. Both the benefits and the drawbacks …”

J. Zhang, J. Wang Dynamic modeling and analysis of a star-wheel reducer S. 741-752

„… high-speed planetary gears [J]. European Journal of Mechanics-A/Solids, 2018, 67: 123-136. [6]. Tsai S J …” „… transmission ratio and high power density are required. As one of the most overwhelming concerns in the early …” „… the range of 66.2 Hz to 197 Hz and are much higher than the input frequency of the star-wheel reducer …”

V. I. Goldfarb, E. S. Trubachev, K. V. Bogdanov, T. A. Pushkareva Prospects of manufacturing spiroid gears with small gear ratios S. 1665-1674

„… or multi-tooth assembled running-in cutting heads. For the second case, high production-efficient …” „… universal gear-milling machines for gearwheels. Moreover, the gear had less sensitivity to the action of …” „… all cases in order to implement high contact ratio the localized contact pattern stretched along the …”

doi.org/10.51202/9783181023556

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SIMVEC – Simulation und Erprobung in der Fahrzeugentwicklung

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2333 2018

Treffer in den folgenden Teilen:

D. Scheffold, N. Himmelsbach, P. Sabyasachi, G. Müller Efficient dynamic simulation of jointed structures with local contact nonlinearities using model order reduction S. 59-74

„… same number of basis vectors. The modal derivatives show a high speed-up if the optimal spacing for …” „… ranked behind the other two methods. The highest speed-up is obtained with the pure basis of static …” „… cubically with the dimension of the system, a distinctly higher speed-up is expectable for a large FOM …”

S. Luthardt, L. Fredriksson, V. Leconte, Patrick Lombard, A. Dyer E-Motor Design using Multi-Physics Optimization S. 359-380

„… Entscheidungsfindung durch Anwendung von Simulation, Optimierung und High-Performance-Computing über …” „… challenge of E-mobility by developing high performance E powertrains which will meet every Porsche standard …” „… decision making by applying simulation, optimization, and high-performance computing throughout product …”

M. Peperhowe, S. Bannenberg, R. Rasche Smart Testing of Intelligent Systems S. 731-748

„… scenario, the Ego-vehicle is in the left lane of a highway traveling at a higher speed than a …” „… possible driving situation can be explicitly recorded in the test definition in advance. To achieve a high …” „… behavior of the Ego-vehicle is described by a maneuver for which speed and steering angle or the …”

E. Papoutsis, M. Hojjat, K.-U. Bletzinger Geometric constraints for node-based shape optimization of car body parts S. 75-92

„… model. For a sensitivity-based approach, the first order derivative is defined as a field of …” „… reduces the cost and increases the speed of production. 2. Consistent quality: even though large amounts …” „… smoothness of the geometry. Mesh regularization methods are also applied in combination with sensitivity …”

doi.org/10.51202/9783181023334

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28. Deutscher Flammentag

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2302 2017

Treffer in den folgenden Teilen:

T. Zirwes, F. Zhang, J. A. Denev, P. Habisreuther, H. Bockhorn, N. Zarzalis Einfluss von erhöhtem Druck auf die Änderung der Flammendynamik durch Streckung in vorgemischten Flammen S. 549-562

„… particular on the sensitivity of local burning speed to stretch in terms of the Markstein number ? ? . For …” „… sensitivity of flame speed ? to flame stretch ? [13]: ? ≡ − ? ? ? ? . In the linear Markstein model …” „… Markstein pressure dependence, with an almost five times higher sensitivity than the next highest reaction …”

C. Chi, G. Janiga, K. Zähringer, D. Thévenin Indirekte Messung der Wärmefreisetzung in Wasserstoffflammen mittels Spezieskorrelationen S. 625-636

„… . Gabet, N. Jiang, W. R. Lempert, J. A. Sutton, Demonstration of high-speed 1d raman scattering line …” „… been derived over the last decades to approximate the heat release profile. The flame front (high …” „… ] found the product of H and CH2O LIF signals show only a weak sensitivity to variation in stoichiometry …”

doi.org/10.51202/9783181023020

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Drivetrain for Vehicles 2016

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2276 2016

Treffer in den folgenden Teilen:

M. Kraft, W. Pflieger, S. Henzler, C. Nizzola, S. Rinderknecht Simulation-based study of drivetrain electrification to improve driving dynamics S. 177-192

„… center of gravity is shifted to vehicle’s center, thereby higher cornering speeds are possible. In …” „… power hyperbola shifts to higher speeds. Raising gear ratio has two effects, one is higher torques in …” „… configuration and reduced e-drive torque capability at higher speed. An exemplary e-drive torque characteristic …”

S. Fujimoto, N. Shiomura, K. Sato, Y. Kawahara The Trend and Future of Torque Converter for CVT S. 869-878

„… decrease capacity factor at lower speed ratio and sacrifice capacity factor and efficiency at higher speed …” „… speed cruise, so capacity factor and efficiency have importance at high speed side. That’s why …” „… enlarges rotation speed at regular use especially in the change from 4 to 3 cylinders. So, both higher …”

Y. Takeda, M. Kawaminami, M. Tsuchida, H. Takekawa Gear Whine Noise Reduction Technology of New Model Transmission for FF-Hybrid Vehicle S. 435-450

„… addition to lightweight and high mechanical efficiency, for noise reduction we reduced vibration sources …” „… unit. As a result, this hybrid transmission has good performance for lightweight, high mechanical …” „… ever-cleaner powertrains, our customers are expecting a rewarding driving experience and ever higher levels of …”

A. Kooy, D. Eireiner, T. Krause, C. Herbers, B. Vögtle Torsional Damping Systems for all relevant Powertrains – Extending current Damping Technologies S. 257-270

„… Antriebsstränge angepasst werden. Abstract Effective damper systems are needed in order to drive at high …” „… torque and low engine speed for improved fuel efficiency. For manual transmissions (MT), 3- and 4 …” „… driving the driver will lose direct contact with the powertrain, requiring an even higher degree of …”

B. Löffler, J. Patzner, M. Drabek, K. Armbruster Modular 8-Speed Hybrid Dual Clutch Transmission With Integrated All-Wheel Distributor by ZF S. 85-100

„… possible with high travel speeds. Many additional functional modes were integrated in the software for …” „… Modular 8-Speed Hybrid Dual Clutch Transmission With Integrated All-Wheel Distributor by ZF …” „… significant lever for ZF to further reduce CO2 emissions in road traffic. Thus, apart from highest …”

doi.org/10.51202/9783181022764

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Schwingungen von Windenergieanlagen 2019

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2346 2019

Treffer in den folgenden Teilen:

J.-R. Koch Designing bearings for noise performance in wind gearboxes S. 129-138

„… more noise-sensitive at higher speeds, for two main reasons: The effect of speed on vibration …” „… : speed is therefore a multiplicative factor. The ear sensitivity: typical tonal components generated …” „… at higher speeds are more likely to fall in the frequency range of the human ear’s maximal …”

C. Schwarz, C. Schulz Indirect Model Predictive Control and its Impact on the Fatigue Strength of the Drivetrain S. 171-182

„… of the drivetrain fatigue strength. Six representative different turbulent full-field wind speeds of …” „… wind speeds the damage sum – a scalar to assess the fatigue strength – is raised by 288% while the …” „… ∈ , , ∈ , , ∈ , and ∈ , ∀ ∈ 1,… , and ∈ , ∀ ∈ 1,… , with 2 sufficiently high. The vector , is called control …”

doi.org/10.51202/9783181023464

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Dritev – Drivetrain For Vehicles 2019

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2354 2019

Treffer in den folgenden Teilen:

A. Grunwald Transmission system footprint related to fatigue, efficiency and NVH S. I-367-I-384

„… of development for higher speed, higher efficiency and sensitivity to NVH due to missing masking …” „… transmission systems like very high rotational speed, high efficiency and good NVH combined with shortest …” „… transmissions in e-drive are operating at very high speed. Selected mechanical structure of the gear train with …”

S. Kluemper Benefits of the new Allison 9-speed fully automatic – Medium duty commercial transmission S. III-61-III-74

„… effective ratios for the new 9-Speed. A high ratio coverage transmission is able to achieve both low speed …” „… driveability and performance. - Enables superior low speed manoeuvrability. - Operates with high …” „… point, both transmissions were analysed on a high density stop start P&D cycle. Both 6-Speed and 9 …”

A. Esser, J.-E. Schleiffer, T. Eichenlaub, S. Rinderknecht Development of an optimization framework for the comparative evaluation of the ecoimpact of powertrain concepts S. I-137-I-162

„… generally high efficiency of the powertrain. The two-speed BEV yields the best results for this scenario …” „… maximum torque at the wheels. The single-speed BEV needs a high amount of installed power in order to …” „… because of the high sensitivity to external factors. The developed optimization framework allows for a …”

K. Baron, C. Rübsam, M. Werra, F. Küçükay Hybridized manual transmission – Opportunities and challenges of mild hybridization S. I-49-I-66

„… command and skip the shifting operation or even shift into a wrong gear (e.g. to high engine speed). Thus …” „… shifting speed is different for a vehicle with low and high load. In the following the most critical …” „… have a high penetration of manual transmissions in their current portfolio for good reasons like high …”

A. Viehmann, J.-E. Schleiffer, S. Rinderknecht Evaluation of the dedicated range-extender transmission powertrain concept DE-REX regarding efficiency, costs and complexity – Comparative assessment of electric and hybrid powertrain configurations b... S. I-21-I-48

„… gear ratio for high speed operation leads to a reduced launch torque. Therefore, it would be desirable …” „… . The lowest gear ratio of the multi-speed transmission can still be chosen for high speed operation …” „… is expected to be higher. In the course of the paper, the potentials of a multimotor and multi-speed …”

M. Kruse, H. Decker, Sebastian Eulert Optimisation of electric motor acoustics of a hybrid dual clutch gearbox using virtual methods S. II-111-II-124

„… the power density as well as the efficiency of the electric motor, high priority has been placed on …” „… process of the electrified gearbox [1]. In order to do justice to the high acoustic demands, a (virtual …” „… amplitudes of the air gap forces over the speed and the torque of the electric motor. The method of …”

doi.org/10.51202/9783181023549

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Land.Technik AgEng 2017

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2300 2017

Treffer in den folgenden Teilen:

S. Meyer, M. Liebich, P. Martella Counting seeds in air seeders zu Hoberge, S. 323-328

„… . The sensitivity is high enough to detect even small seeds like canola very accurately. Another big …” „… beside the metering unit [1]. As a solution with higher automation, the company Lemken introduced a …” „… was to develop a robust seed flow sensor that is capable of measuring the seed flow with high …”

C. Korn, T. Herlitzius Coupled CFD-DEM simulation of separation process in combine harvester cleaning devices S. 199-210

„… : Identification of significant parameters and their sensitivity to numerical results. Consideration and …” „… process is simplified in the simulation and in the experiment on a high level. This corresponds on the …” „… cleaning device. By this, the quantity of particles is reduced, which allows a higher number of …”

S. Pantke, C. Korn, T. Herlitzius, R. Zürn Concept for Weed Seed Separation in Combine Harvesters Th. Leonhardt, S. 117-126

„… high efficiency, high separation precision, low energy demand and a low process sensitivity to …” „… high-performance agriculture, the focus on clean fields increases. Due to herbicide resistant weeds, political …” „… high voltage device, called Electroherb which destroys the weed plants and roots by electrical current …”

doi.org/10.51202/9783181023006

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Ansatz zur Objektivierung der Hochgeschwindigkeitsempfindlichkeit von Reifen

Larissa Jasmin Grabbe

Reihe: Verkehrstechnik/Fahrzeugtechnik

Band 820 2024

doi.org/10.51202/9783186820129

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Autoreg 2019

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2349 2019

Treffer in den folgenden Teilen:

N. Althar Udupa, E. Schulz, M. Schultalbers Polytopic LPV Controller Design to Control the Boost Manifold Pressure in an Internal Combustion Engine S. 377-388

„… sensitivity is chosen as (10) where is the bound on the control sensitivity at high frequencies, the …” „… engine speed and is the relative air charge. The above parameter dependent discrete-time system can …” „… charge 90 50.81 % Engine speed 2200 1800 rpm Boost manifold pressure 1200 496 mbar waste gate valve …”

F. Hundertmark, M. Grotjahn Automated design of structured gain-scheduling oil pressure controllers by modern synthesis methods S. 403-416

„… controllers Ki are shifted to higher frequencies as the engine speed n increases. The course over the speed is …” „… pressure control systems that use too high target oil pressures for robustness reasons. This results in …” „… point is defined by the engine speed. An oil pressure controller is used to provide the required oil …”

G. Nareyko, T. Koch, A. Trächtler Model Predictive Control of an Active Roll Stabilization System S. 245-256

„… suspension stiffness. As the power supply rises with higher speeds, the M-n operating points are shown for …” „… . Secondly, the optimization problem is created and contains saturations of rotational speed and torque …” „… . Secondly, the optimization problem is created and contains saturations of rotational speed and torque …”

E. Enders, F. Fent, M. Lienkamp, G. Burkhard, D. Schramm Objectification Methods for Ride Comfort – Comparison of Conventional Methods and Proposal of a new Method for Automated Driving Conditions S. 323-352

„… inattentive occupants. It can also be seen that inattentive occupants show higher values of RMS accelerations …” „… ]. If basic needs are fulfilled, the next higher needs become VDI-Berichte Nr. 2349, 2019 325 relevant …” „… found to underestimate the sensitivity of subjects to horizontal vibration under multi-axial vibration …”

doi.org/10.51202/9783181023495

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Bauingenieur

Alle Ausgaben: Bauingenieur

Bauingenieur Jahrgang 99 (2024) Heft 12 ISSN Online: 0005-6650

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Barbara Goller, Paul König, Christoph Adam Zuverlässigkeitsbasierte Optimierung von Eisenbahnbrücken im Hochgeschwindigkeitsverkehr/Reliability-based optimization of high-speed railway bridges S. 385-395

„… load-baring structure of high-speed railway bridges. Optimization is performed in terms of the required …” „… a rigid mass-spring-damper system representing the train moving at a constant speed. While for …” „… quantitatively considered. In addition, a sensitivity analysis is performed to determine the most influential …”

doi.org/10.37544/0005-6650-2024-12

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DRITEV – Drivetrain for Vehicles 2021

VDI-Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2381 2021

Treffer in den folgenden Teilen:

R. Resch, C. Danzer, A. Poppitz, T. Pirkl Alternative drivetrains for sustainable commercial vehicles S. 669-684

„… launch torques up to high vehicle speeds. Although the package is a challenge for the E-Transmission …” „… . The previously VDI-Berichte Nr. 2381, 2021 679 highest ranked 4-speed drive system is removed from …” „… this investigation, IAV developed a 2-E-Motor 3-speed E-Drive Unit (EDU) as a concept that can be …”

J. Nowack, G. Hellenbroich, A. Ghosh, V. Shapovalov, R. Fleuren Park by Wire System for current Electric Drive Units S. 291-302

„… presented. This will be done in accordance to current multi speed power-shift EDU concepts, including FMEA …” „… pawl. Conventional pull-cone designs inherently have to deal with high contact stresses due to point …” „… or line contacts. High contact stresses can lead to friction instabilities and high wear, eventually …”

C. Schörghuber, M. Ortner, J. Pell, S. Pretsch Holistic system design and operation of a fuel cell truck based on an innovative energy management S. 685-700

„… cooling system. All systems have to operate together in an optimal way which is controlled on high level …” „… addition to the zero emission target, the powertrain must be operated with highest efficiencies. Important …” „… long-haul application. Thereby hydrogen is stored within high pressure tanks in gaseous or liquid state …”

G. Herbillon Performances Validation of an electrically-commanded dog clutch system for multi-speed and disconnectable eDrives S. 255-274

„… speed is also supposed to increase. Multi-speed eDrives seem to be a good alternative to high speed …” „… eDrives in order to reach vehicle performances (high wheels torque and high vehicle top speed) without …” „… R1T, Jaguar IPace EV400), 209 km/h (Tesla 3), 260 km/h (Porsche Taycan Turbo S). If High Speed …”

doi.org/10.51202/9783181023815

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International Conference on Gears 2023

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2422 2023

Treffer in den folgenden Teilen:

J. Vorgerd, P. Tenberge, M. Steinrötter Scuffing load carrying capacity of high-speed gears with an isotropic superfinished surface S. 227-242

„… Scuffing load carrying capacity of high-speed gears with an isotropic superfinished surface Dr.-Ing …” „… gears using a high-speed test rig. The experimental results were evaluated for the internal loads during …” „… work scuffing tests were performed on a high-speed test rig, Fig. 1. The working principle consists of …”

H. Mahe Model based NVH design: e-bike application S. 1229-1238

„… requirement. Many gears in rotation at high speed in the reducer can give some noise issues. Noise can appear …” „… priority. First prototypes have shown a high sensitivity to rattle noise happening when the e-motor is …” „… gearbox is located on the rear axle. Valeo’s proposal consists in implementing an automatic 7 speed …”

M. J. Herberger, F. Rudolph, B. Sievers Efficient concepts for high ratio angular gearboxes S. 801-814

„… the bearings are reduced significantly, especially for high speeds originating from a small ratio in …” „… Efficient concepts for high ratio angular gearboxes Michael J. Herberger, Dr.-Ing. Felix Rudolph …” „… displacement behavior of hypoid and SPIROPLAN® angular stages is presented. Result-ing from a lower sensitivity …”

I. Hong, D. Talbot Tooth Bending Strain Rate Analysis in a Counter Shaft Drivetrain and Implications on Fatigue Strength S. 53-66

„… VHCF regime. This in turn creates a need for high-speed testing methodologies and an understanding of …” „… high pitch line velocities in the first reduction set. Nevertheless, the lowest speed mesh must take …” „… countershaft arrangements where the traction motor directly drives a high-speed pinion mating to a counter …”

B. van Wissen, L. Pastukhov, F. Mitsuzuka, K. Iwanaga, A. Hasanovic NVH performance of thermoplastic gears: modelling and measuring S. 1389-1402

„… meters and microphones mounted close to high-speed running gears. Via detailed data analysis, combined …” „… low torque then at higher speeds and torques. Fig. 6: Image of an acoustic camera showing that most of …” „… as a merge between two high performance material suppliers: DSM Engineering Materials and Lanxess HPM …”

S. Sepp, A. Wenig, M. Otto, K. Stahl Acoustical behavior of periodic flank modifications under dynamic operating conditions S. 341-356

„… need for lightweight powertrains in electric vehicles is addressed by the use of high-speed electric …” „… condition. For very high rotational speeds (n ), the excita-tion at this operating point is in the form of a …” „… force excitation under quasi-static conditions for very high revolution speeds in Figure 3 does not …”

A. Baseer, B. Bauer, C. Wang Mesh Load Factor in Multiple Planetary Stage Gearboxes S. 281-290

„… planets, the higher values for K are expected. The analytical calculation approach of Kof a single …” „… is further increasing the demand for higher torque densities also arises which introduces the PPP(H …” „… of each planet and thus occurs with the rotational speed of the planet gear. On top of that some …”

B. Devaux, C. Hamon, S. Montani Evaluation of specialty polymer performances in gear applications and the bias between modeling and testing approaches S. 1515-1532

„… to the wear rate prediction. 1. IntroductionSolvay large portfolio of specialty polymers is of high …” „… PAI are ideal solutions for applications operating at higher temperatures and torques, while Amodel …” „… (due to shrinkage);- Evaluate the sensitivity of the structural model (used to compute stresses and …”

L. Binanzer, L. Merkle, M. Dazer, A. Nicola Pitting Detection for Prognostics and Health Management in Gearbox Applications S. 97-108

„… , speed and vibration sensors. The experiments are statistically designed by means of Design of …” „… Experiments (DOE). The factors pitting damage size, rotational speed, torque and viscosity are varied. This …” „… . Introduction Gear drives are important machine components for adjusting speed and torque in many mobile and …”

L. Klee, T. Bergs, M. Solf, J. Brimmers Binder Jetting in Gears – Process Design and Tooth Bending Strength for Gears made of 17-4PH S. 1665-1680

„… netshape production, powder metallurgically manufactured (PM) gears have a high potential to increase cost …” „… Due to near netshape production, powder metallurgically manufactured (PM) gears have a high potential …” „… good flowability as well as a high filling density [3]. To date, commercial systems mainly process …”

J. Lövenich, M. Zalfen, D. Mevissen, J. Brimmers, C. Brecher Crack growth based tooth root life prediction model – an influence quantity analysis S. 109-124

„… standard specimens [14]. A high-speed stress test rig was set up in a EU clean aviation project to …” „… turbo gearbox applications is the high number of load cycles reached by the gearbox components …” „… the very high cycle fatigue (VHCF) range must be known as precisely as possible. Most VHCF SN-curve …”

C. Westphal, J. Brimmers, C. Brecher Influence of Axis Misalignments in Stepped Planetary Gear Stages on the Excitation Behavior – Test Rig Development and Simulative Analysis S. 175-190

„… the Operational Behavior of a High-Speed Planetary Gear Stage for Electric Heavy-Duty Trucks in …” „… combination of high power density, high efficiency and low noise emission. With the electrification of the …” „… errors have the highest influence on the sun trajectory and the load sharing. The misalignments occurring …”

T. Inoue, D. Iba, N. Fujita, A. Nishikawa, M. Ishii, J. Hu, H. Shimasaki, N. Miura, A. Masuda, I. Moriwaki, J. Hongu Effect of Load Cycles on Return Loss and Resistance of Sensor and Antenna Circuits Printed on Plastic Gears S. 659-674

„… the high-cost limit these systems to laboratory-level use. Therefore, there is a need for a new …” „… circuit on the active tooth flank and a thicker circuit on the non-active tooth flank to get high …” „… sensitivity. The line width of the sensor is 0.18 mm on the active flank side and 0.9 mm on the non-active …”

E. Grabovic, A. Artoni, M. Gabiccini, E. Ciulli Exploration of trade-offs between NVH and efficiency in bevel gear design S. 853-880

„… applications owing to their capability to efficiently transmit high torque, operate smoothly, and offer high …” „… gears in high-end applications is confronted with some design challenges, such as minimization of …” „… accuracy, especially at high loads. Cao et al. [6] evaluated the lubrication performance under different …”

A. Hilligardt, V. Schulze Gear Skiving with Minimum Twist Errors S. 1749-1764

„… places the focus of development on increasingly compact drive units with the highest power density. Due …” „… to high power density and good efficiencies at high transmission ratios, planetary gearboxes are …” „… gearing of such quality in finishing. Gear skiving is characterized by high productivity and flexibility …”

A. Donmez, A. Kahraman Experimental Investigation of Influence of Indexing Errors on Gear Rattling S. 703-714

„… shapes and amplitudes within a wide range of operating speed through three-phase synchronous AC motors …” „… error conditions to demonstrate the sensitivity of rattling to indexing error and excitation conditions …” „… using gears of a high-quality class. Gears used in automotive transmissions are subjected to varying …”

L. Bonaiti, M. Monti, C. Gorla, M. Geitner, T. Tobie, K. Stahl The consequences of different methodologies for the elaboration of pulsator test results with respect to the load spectrum assessment of gears S. 33-52

„… reasons only (e.g. to investigate the overload sensitivity etc.). For the further assessment in gear …” „… factor for tooth root stress for reference test condition, is the relative notch sensitivity factor, is …” „… least conservative one (i.e. it always estimates the highest lifetime). Furthermore, the results are …”

doi.org/10.51202/9783181024225

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ELIV 2021

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2384 2021

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D. Mehlig, M. Muller, J. Treier, A. Loges Long distance e-mobility in the trade-off between battery capacity & charging power – Battery immersion cooling as enabler technology? S. 545-562

„… different compared to urban purposes. For example, a higher relevance of the charging speed can be assumed …” „… higher battery capacities. But in parallel the increase of charging speed is crucial for the long …” „… shown that vehicles with a high charging power > 200 kW combined with smaller and cheaper batteries …”

K. Brand Shifting Left the development of Electric Vehicle Products, from System to Software S. 563-578

„… software with the existing system models simulating in the loop. This realizes a high-speed, closed-loop …” „… algorithm (FOC) and map the high frequency current control loop and the low frequency speed calibration …” „… , improved battery technology and environmental sensitivity have all helped to drive more interest in EVs …”

doi.org/10.51202/9783181023846

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LAND.TECHNIK 2022

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2395 2022

Treffer in den folgenden Teilen:

A. Lindenberger, M. Uhl, M. Frank Influence of design and operating parameters on crop-flow characteristics in a self-propelled forage harvester (SPFH) using experimental and numerical methods S. 457-464

„… material. In addition, high-speed camera recordings have been used for visual evaluation of lab tests to …” „… (Fig.7a) more than e.g. the dry matter of the kernels does (Fig. 7b). A higher speed difference of the …” „… VDI-Berichte Nr. 2395, 2022462 behaviour just for higher cracker gaps. Adjusting the speed of both rollers has …”

M. Abdipourchenarestansofla, H. P. Piepho Yield observation outlier detection with unsupervised machine learning in harvest machines S. 343-348

„… . The error sources are well-known, mostly inherited from the dynamic nature of operation, speed …” „… nutrients and moisture with high frequency. One of the major challenges in the use of combine harvester …” „… , speed changes, field topography, non-fully used cutting bar, start/end delays, filling/emptying time …”

doi.org/10.51202/9783181023952

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Drivetrain Solutions for Commercial Vehicles

VDI Wissensform GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2421 2023

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A. Rozum, R. Uerlich, G. Witham, L. Eckstein Modular powertrains for heavy-duty electric vehicles – From concept to prototype S. 191-XII

„… conformity in both speeds. In combination with plausible results of sensitivity analyses performed with the …” „… load-independent losses (see [34]), which dominate in the range of low loads and especially high speeds. Summary …” „… annual passenger car registration numbers in Germany are around 10 times higher than truck registrations …”

L. Heber, M. Helmich, J. Schwab, T. Knobelspies, M. Kober, F. Rinderknecht Thermoelectric Generators for Heavy-Duty Vehicles as an Economical Waste Heat Recovery System – Holistic design and evaluation with the use of modern simulation methods S. 109-122

„… expected higher degree of electrification the benefits may even be much greater. TEGs are silent …” „… the material class bismuth telluride are used for the diesel. High-tem-perature modules of the …” „… heat exchanger area of 1420 cm2 and segmented high-temperature capable TEM are deter-mined for the …”

doi.org/10.51202/9783181024218

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