International Conference on Gears 2022

Produktbeschreibung

Foreword
Gears bear great responsibility in present times, where the conditions for mechanical engineering and especially for drive technology are changing faster than ever. Megatrends, such as circular economy, decarbonization, green pressure, digitalization, zero waste and several more represent global challenges – but at the same time they are unforeseen opportunities for drives in industry, energy generation and mobility. Gear engineers must find answers to these research questions and provide solutions.

Topics like gear efficiency improvements, performance enhancement of plastic gears, new measurement methods and additive manufacturing are in the focus of the VDI International Conference on Gears 2022 in Garching / Munich. One interesting question is, if we can anticipate break-through innovations to address the challenges above. The opening session of the conference addresses this very question: “What will be the next game-changing innovations and technologies in gear design and production?”.

In the main part of the conference within 40 specialized sessions the latest developments and research results in powertrain industry and academic research are presented and discussed. Leading international experts contribute with more than 120 presentations and discuss their findings with all attending gear experts on-site.

The necessity to reach to CO2-neutrality puts the research in efficiency in a key role. Measures like the application of tailored synthetic or even water-based lubrication fluids are typical. Several contributions to the conference discuss additional possibilities, for example by reducing friction losses. Other subjects of the conference are the NVH-behavior and gear dynamics of geared transmissions. Furthermore, measures to reduce excitation behavior are developed and analyzed from different perspectives in numerous contributions. With smart gear systems and condition monitoring approaches pioneering technologies are subject of expert speeches in the conference.

Within this report you will find the complete arrangement of proceedings of the presentations
during the VDI International Conference on Gears 2022

Contents (Auszüge)

Foreword 1
K. Stahl, Gear Research Center (FZG), Technical University of Munich (TUM), Garching, Germany
International Conference on Gears 2022

Keynotes
Demands in gear technology in structural change in the economy ….. 3

Roller pairings with lubricants impregnated sintered materials ….. 9

Determining tooth root strength
Gear root bending strength: statistical treatment of single tooth bending fatigue tests results ….. 15

Improved method for the determination of tooth root endurance strength ….. 31

A comparison of gear tooth bending fatigue lives from single tooth bending and rotating gear tests ….. 45

NVH
NVH calculations for drivetrains, a methodology for selection of the best suitable calculation approach for a specific purpose ….. 75

Gear mesh excitation and non-uniform rational B-splines ….. 91

NVH-performance versus Costs – Coherent R&D for gears, system and manufacturing ….. 103

EHL contact
Research on the effectiveness of roelands formula with constant VPC in EHL of higher pair contact …. 119

Local pitting fatigue concept with EHL simulation for case hardened gears in electrical drives ….. 133

2-disc tribometer for various tests on sliding/rolling contacts with tribological loads such as in tooth flank contacts ….. 145

Loaded tooth contact analysis
Design, strength calculation by ISO10300 and loaded TCA of forged differential bevel gears …. 157

Innovative tooth contact analysis with non-uniform rational b-spline surfaces ….. 171

Developing a digital thread linking gear design to manufacturing simulation and metrology ….. 185

Non-involute and asymmetric gears
Practical application of asymmetric tooth root geometry for downsizing automotive transmission gears ….. 197

Contact characteristics of cycloid planetary gear drives considering backlashes and clearances ….. 215

Condition monitoring/smart gears
Enhanced damage classification on transmissions by generating synthetic data with Generative Adversarial Networks (GAN) ….. 227

Application of genetic algorithms for parameters identification in a developing smart gear system ….. 239

Feasibility study of measuring instantaneous angular speed of helical gears with magnetoresistive sensors ….. 253

Gear strength
Material influence on mechanical properties of gears with alternative microstructures ….. 265

Advanced use of DOE in gear geometry optimization ….. 281

Influence of grinding zones on the tooth root bending strength of case carburized cylindrical gears ….. 287

Wear
Analysis of local wear within the dry lubricated rolling- sliding contact of coated surfaces ….. 305

Improving pitting durability by introducing the non-linear wear propagation property of helical gears ….. 317

Wear simulation of worm gears based on an energetic approach ….. 329

Bevel and hypoid gears
Development of IP-bevel gears for industrial operation ….. 343

Enhanced loaded tooth contact analysis of hypoid gears within a multi-body-system simulation ….. 357

A standardizable approach to tooth flank fracture ….. 371

Planetary gears
Dynamic load distribution of planetary gear sets subject to both internal and external excitations ….. 389

Experimental investigation of the dynamic load sharing of planetary gearboxes ….. 409

Influences on the Excitation Behavior of Lightweight Planetary Gearboxes ….. 421

Gear geometry optimization
Parametric study of hypocycloidal involute gears ….. 433

Research on indexing error of gear with few teeth in rolling process ….. 445

Very fast tooth root optimization – general tool geometry for much smaller tooth root stresses ….. 457

Keywords: Roller pairing, gear root bending, gear test, gear mesh excitation, grinding zone, angular speed, helical gears, smart gear system, downsizing, automotive tranmission, thread linking, bevel and hypoid, waer, gear geometry optimization, FEM analysis, Roller pairing, gear root bending, gear test, gear mesh excitation, grinding zone, angular speed, helical gears, smart gear system, downsizing, automotive tranmission, thread linking, bevel and hypoid, waer, gear geometry optimization, FEM analysis