Affiliation:
1. School of Aerospace, Xi’an Jiaotong University, Xi’an 710049, China
Abstract
This paper describes the formulations for the viscoplasticity of metals based on the Chaboche and Delobelle model. The implementations of the viscoplastic models were detailed herein and then implemented via user subroutines for material models (UMAT) in ABAQUS. Two typical metals, i.e., 316 Stainless Steel and Zircaloy-4, were chosen as examples and their viscoplastic behaviors were captured. Numerical simulations are compared to reported experiments in order to validate the models and the UMAT codes. The typical viscoplastic behaviors of both metals, such as stress relaxation and creep, were captured well through the available experiments. We have publicized all the data and codes.
Funder
National Natural Science Foundation of China
Science and Technology on Reactor System Design Technology Laboratory
Subject
General Materials Science,Metals and Alloys