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VDI Wissensforum GmbH - International Conference on Gears 2023

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VDI Wissensforum GmbH (ed.)

International Conference on Gears 2023

Series: VDI-Berichte

Volume 2422 2023

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D. Yamazaki, D. Iba, J. Chong Low, I. Moriwaki Cross-correlation analysis among tooth profile and helix deviations S. 1273-1278

„… (Learning-data collection through hobbing simulation and their compression with network representation)” (in …” „… using the measured data of gear surfaces. However, the correlation coefficients cannot evaluate the …” „… periodicity between the deviation data. Therefore, we analyze the characteristics between tooth profile and …”

J. Gründer, A. Monz Analytical Method for Calculating the Nominal Tooth Root Stress in Worm Gear Shafts S. 1091-1110

„… approach for calculating bending, compression, and shear stresses in the tooth root of worm shafts to close …” „… detailed measurements are provided in [12, 20 through 22]. Data of measured surface hardness is found in …” „… formulated in [25]. Bending, compression and shear stresses are calculated in each loaded slice along the …”

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

„… if damages can be detected early and if the accumulated sensor data can be assigned to a type of …” „… evaluation of gear damages at different stages to use the CMS sensor data for Prognostics and Health …” „… Management (PHM). It is also the objective to evaluate different sensor concepts for data acquisition …”

J. Lohmiller, F. Dobler, M. Wöppermann Investigating different nodular graphite irons for the application of gears – a step towards standardization by using reasonable quality criteria S. 1731-1748

„… several years, only little data regarding toothing-specific strength values is available. Moreover, ADI is …” „… heat-treated under real industrial conditions. In doing so, the tension-compression fatigue strength Sf,tc was …” „… ADI data points consist of material from different suppliers (differences in chemical compositions …”

D. Gallagher, E. Wiita, R. Weidig Improved Method for Validation of Root Stress in Polymer Gears S. 1333-1350

„… (including material data) are in a lower state of maturity compared to those for steel. 2. Unique …” „… compression side of the tooth, and separate investigations must be made [6]. In cases where gear rims have …” „… Material Data in Current Standards Whilst the development and first release of VDI 2736-2:2014 represents a …”

T. Tra My Truong, S. Schumann, B. Schlecht On the Testing of Flank Fracture Calculations Based on 3D-Gears S. 243-256

„… can be calculated almost perfectly. Table 1: Key data of the project FVA 240 II [2] with the modified …” „… heat treatment simulation [9] based on the data of research project FVA 240 II [2] Calculation methods …” „… area. Tooth flank fractures are often found near the or the transition area between compression and …”

L.-C. Chang, Q. Y. Zhuang, S.-J. Tsai, J.-F. Hochrein, S. Landler, M. Otto, K. Stahl Comparing the contact characteristics of involute gear/ eccentric cycloidal gear calculated by various loaded tooth contact analysis models S. 397-412

„… , shear wS and compression wN deformation, show in Eq. (11-13). The tooth is considered as a cantilever …” „… . Numerical analysis example 4.1 Involute gear 4.1.1 Calculation data The gearing data standardized in [12 …” „… ] for analysis are listed in Table 1. These data are specific to a C gearing designed for pitting tests …”

doi.org/10.51202/9783181024225

VDI Wissensforum GmbH - International Conference on Gears 2019

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VDI Wissensforum GmbH (ed.)

International Conference on Gears 2019

Series: VDI-Berichte

Volume 2355 2019

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J. Lohmiller, J. Hoffmeister, J. Hermes Conventional high-strength nodular graphite iron as a substitute for austempered ductile iron (ADI) S. 877-892

„… tensile samples with d0 = 10 mm were produced according to DIN 50125:2009 [5]. Tension-compression …” „… above the line according to the FKM guideline calculated for GJS-700-2 (solid line). Mechanical data …” „… tension/compression fatigue tests are presented below (Table 3). The fatigue strength is given with a failure …”

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

„… in which simulations and experimental data obtained by strain gauge measurements at sun gear roots …” „… readings. Tensile reading will be followed by another compression reading because of the gear mesh …” „… tensile and compression strain. The mesh cycle generates a peak to peak reading which gives greater …”

J. Hongu, H. Noborio, T. Koide, A. Tamura Proposal of linear mapping model among machining processes for gear tooth surface using graphic analysis S. 1199-1206

„… hone. In future works, the reproducibility of this data compression method should be evaluated. And …” „… 20 times, the size of data was 1024×1024 point (650×650 μm). Two-dimensional Fourier transform …” „… The obtained 3-dimensional data was a function f(x,y) including 3-dimensional coordinates, therefore …”

R. Beilicke, L. Bobach, D. Bartel Transient 3D TEHL simulation of spiral bevel gears under mixed friction conditions S. 529-540

„… epicycloid was selected. The essential geometric data of the gearing are summarized in Table 1. The toothing …” „… height. The operating data of the bevel gear pair can also be found in Table 1. The calculations were …” „… case-hardened steel 16MnCr5. The material data can be taken from [4]. A mineral oil ISO VG 150 was used as …”

E. Maier, T. Lohner, K. Stahl, P. Sperka, M. Hartl Detailed analyses of film thickness and friction in thermoplastic EHL contacts S. 1391-1400

„… , heat input in TEHL contacts due to lubricant shearing and compression is less dominant compared to …” „… , friction originates from shearing and compression of the fluid, in thermoplastic EHL contacts, fluid …” „… stiffness shows time dependency, material data according datasheets might not be representative to …”

A. Kubo Influence of stressed volume of tooth flank on the surface durability S. 15-24

„… . Metallurgists carry out such fundamental research commonly with tension test, compression test or …” „… and gear investigation. The direct application of SN-curve data and its concept to the surface …” „… method, the ESV-ratio is proposed that is described simply with gear specification data. 5. The concept …”

E. Lothman, L. Kamjou, E. Claesson Gear performance beyond current standards – Implementing increased material fatigue performance in gears S. 915-924

„… various sizes, are exposed to alternating tension and compression stresses whilst rotating, thus exposed …” „… results will be published continuously. Gear and system developers can then use the data to draw their …”

F. Concli, L. Maccioni, C. Gorla Power loss analysis of different high-power density gearbox typologies: CFD analysis and experimental measurements on a cycloidal gear set S. 101-114

„… roller. Indeed, cycloidal profiles present only compression stresses, thus ensuring a better resistance …” „… a potentially competing cycloidal gear set, geometrical data were chosen in order to have the same …”

doi.org/10.51202/9783181023556

VDI Wissensforum GmbH - Ventiltrieb und Zylinderkopf 2019

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VDI Wissensforum GmbH (ed.)

Ventiltrieb und Zylinderkopf 2019

Series: VDI-Berichte

Volume 2353 2019

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A. A. Möller Cam-less valve train opportunities – Implementing a Freevalve valve train in an automotive application S. 269-0

„… compression ratio, which has been successfully applied in existing projects. This in turn paves the way for …” „… 2.3t in 2008 and the Qoros 3 in 2016. Pictures shown and specific data presented in this paper do …” „… engine were achieved on part load by increased compression ratio (9,0:1 → 10,5:1) and by throttle-less …”

doi.org/10.51202/9783181023532

VDI Wissensforum GmbH - Kunststoffe im Automobilbau 2016

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VDI Wissensforum GmbH (ed.)

Kunststoffe im Automobilbau 2016

Series: VDI-Berichte

Volume 4342 2016

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J. J. Laux, H. Moore, J. Ingram, J. Kowalski Class A Compression-Molded Carbon-Fiber Hood – Development and production of the Cadillac ATS-V and CTS-V Hood S. 61-68

„… Class A Compression-Molded Carbon-Fiber Hood Development and production of the Cadillac ATS-V …” „… future car models. Based on the preliminary outcome of this development of compression-molded Class A …” „… by compression molding a unidirectional carbon-fiber epoxy prepreg, in a matched metal tool, at …”

doi.org/10.51202/9783182443421

VDI Wissensforum GmbH - Ventiltrieb und Zylinderkopf 2017

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VDI Wissensforum GmbH (ed.)

Ventiltrieb und Zylinderkopf 2017

Series: VDI-Berichte

Volume 2291 2017

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R. Janak, J. Baltrucki Next Generation of Valve Train Technology for Engine Braking and More S. 223-240

„… . Because this process does not utilize an additional intake event to support the second compression …” „… Decompression Technology (ADT™) Introduction A compression release engine brake or JakeBrake® is a device …” „… valve is opened before Top Dead Center compression (TDCc) and the fuel is deactivated (see Fig 1 …”

F. Himsel, W. Christgen, V. Schmidt Trends im Ventiltrieb – Variabilitäten für zukünftige Ottound Dieselanwendungen S. 7-26

„… development projects. The data VDI-Berichte Nr. 2291, 201710 points highlighted for the CDA SRFF in Figure 4 …” „… , i.e. by increasing the geometrical compression while at the same time reducing the effective …” „… compression with early (or late) intake valve closing. This also enables lambda=1 control in the whole …”

doi.org/10.51202/9783181022917

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