Elastoplastic Finite-Element Analysis of Multi-Body Processes for Joining Mechanical Parts

Abstract

Fabricating lightweight assembly of auto parts is of great importance and joining technology using plastic deformation is very attractive because of high strength and structural reliability. In developing such assembling processes, prediction technology with high accuracy is essential to optimize the structural system and minimize the manufacturing cost. However, the related technologies are still insufficiently developed for the sake of application because of complexity of the problem. In this paper, an improved methodology of conducting elastoplastic finite-element analysis of multi-body metal forming processes is given with emphasis on the contact condition treatment. The presented approach is applied to simulate a rotary forging process of assembling a third-generation hub bearing unit. The inner races of the duplex pair taper roller bearings are considered elastic materials. Prestresses imposed on them are predicted. ? 2021, The Minerals, Metals & Materials Society.