Residual Stress Analysis of Double Cold Extrusion for Titanium Alloy Lug

Abstract

In order to study the stress distribution of the structure hole after cold extrusion, this paper puts forward the double cold extrusion strengthening method. In this study, we choose TB6 titanium alloy lug as the research object, and the finite element software ABAQUS™ is used to establish the numerical model and simulate the strengthening process as well. By using reasonable simplifications, setting geometry structures, boundary conditions and loading methods, we can implement the finite element calculation and get the results of the residual stress distribution on the lug. The residual stresses along four paths on both top and buttom surface of the lug are compared. The characteristics of the circumferential residual stress near the lug's hole have been analyzed.