Implementation of ABAQUS User Subroutines for Viscoplasticity of 316 Stainless Steel and Zircaloy-4

This paper describes the formulations for viscoplasticity of metals based on Chaboche and Delobelle model. The implementations viscoplastic models were detailed herein then implemented via user subroutines material (UMAT) in ABAQUS. Two typical metals, i.e., 316 Stainless Steel Zircaloy-4, chosen as examples their behaviors captured. Numerical simulations are compared to reported experiments order validate UMAT codes. both such stress relaxation creep, captured well through available experiments. We have publicized all data