爆炸与冲击2011，Vol.31Issue(5)：455-462,8.
异种不锈钢激光焊缝材料的动态本构关系
Constitutive equations for dissimilar stainless steels laser-welded materials
摘要
Abstract
The stress-strain curves of the 304 and 316L stainless steels laser-welded materials were obtained by using the equal strain test method. And obvious hardening behaviors due to the tiny crystal of the welded materials were noticed. The dynamic mechanical properties of the 304, 316L and welded structure materials were experimentally investigated by SHTB at elevated temperature. Constitutive parameters for the 304 and 316L stainless steels were fitted according to dynamic experimental data. The numerical simulation for the welded structure materials in SHTB test was carried out by LS-DY-NA and it was found that stress in the structure materials was non-equilibrium at the early loading stage due to material impedance difference. The strain rate-related parameters in Johnson-Cook constitutive equations for the welded materials were obtained by combining numerical calculation and experimental data.关键词
固体力学/Johnson-Cook本构方程/SHTB/焊缝材料Key words
solid mechanics/ Johnson-Cook constitutive equation/ SHTB/ welded materials分类
数理科学引用本文复制引用
魏延鹏,吴先前,虞钢,段祝平..异种不锈钢激光焊缝材料的动态本构关系[J].爆炸与冲击,2011,31(5):455-462,8.基金项目
国家自然科学基金项目(10832011) （10832011）
