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

Chinese Journal of Mechanical Engineering

Ali Rajaei¹  Yuanbin Deng¹  Soheil Rooein¹  Alexander Bezold¹  Christoph Broeckmann¹  Oliver Schenk¹ 

[1] Institute for Materials Applications in Mechanical Engineering (IWM) of RWTH Aachen University, Augustinerbach 4, 52062, Aachen, Germany;

关键词: ICME;    Process chain;    Powder metallurgy;    Multiscale modelling and simulation;    Digital model;    Sintered gear;   

DOI  :  10.1186/s10033-021-00646-4

来源: Springer

【 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 determined 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 models, 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.

【 授权许可】

CC BY