STUDY OF GROOVE FORMING MODEL ON BIMETALLIC MATERIAL FOR AUTOMOTIVE ENGINE BEARINGS

Abstract

This article focuses on expanding knowledge in metal forming when the initial material is a composite material, consisting of two materials with different thicknesses joined together. First, the behaviour of both materials (aluminium and steel) is studied separately to know their elastoplastic behaviour; thus, the behaviour of the bimaterial can be studied. An experimental design is done on an industrial press using a punch variable in width and depth. Besides, this forming operation has been simulated with a finite element code, with the specific punch, on the bimaterial. The aim of this experimental design is to understand the part played by each material and to better understand the final geometry of the part and the appearance of cracks or not. This study is both experimental and numerical and brings highlighting on the plastic behaviour of a bimaterial that means showing heterogeneities at a macroscopic scale