Numerical Modelling of the Powder Metallurgical Manufacturing Chain of High Strength Sintered Gears

• 作者: Ali Rajaei Yuanbin Deng Oliver Schenk Soheil Rooein Alexander Bezold Christoph Broeckmann
• 来源期刊: 中国机械工程学报
• 年，卷（期）: 2021,（6）
• 所属期刊栏目: Special Issue on Integrated Structures and Materials Design of Mechanical Components
• 页码范围: 3-20
• 页数: 18页
• 语种: 英文

摘要

This paper presents a digital model for the powder metallurgical(PM)production chain of high-performance sintered gears based on an integrated computational materials engineering(ICME)platform.Discrete and finite element methods(DEM and FEM)were combined to describe the macroscopic material response to the thermomechanical loads and process conditions during the entire production process.The microstructural evolution during the sintering process was predicted on the meso-scale using a Monte-Carlo Model.The effective elastic properties were deter-mined by a homogenization method based on modelling a representative volume element(RVE).The results were subsequently used for the FE modelling of the heat treatment process.Through the development of multi-scale mod-els,it was possible obtain characteristics of the microstructural features.The predicted hardness and residual stress distributions allowed the calculation of the tooth root load bearing capacity of the heat-treated sintered gears.