Affiliation:
1. Dalian University of Technology
Abstract
In this paper, a two-dimensional nonlinear thermo-mechanical coupled finite element model was developed to simulate the vacuum hot bulge forming process of rotor-can with the aid of finite element software msc.marc. A set of stress relaxation experiments were conducted to test the high temperature creep properties of hastelloy c-276 and the creep law of material was defined. Then, the finite element model was used to study creep deformation of rotor-can during vacuum hot bulge forming process. As a result, the temperature field and the stress-strain field are calculated and analyzed. Furthermore, the effects of holding temperature and holding time on creep deformation are also investigated. The optimal holding time range for the vacuum hot bulge forming process of rotor-can is from 2h to 3h.
Publisher
Trans Tech Publications, Ltd.
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