某型铜材料动态力学性能的数值模拟研究  

Study on the Numerical Simulation of a Cu Material＇s Dynamic Mechanical Property

作　　者：孙河洋[1] 马吉胜[1] 生龙波[1] 刘海平[1] 吴大林[1] 

机构地区：[1]军械工程学院火炮工程系,河北石家庄050003

出　　处：《军械工程学院学报》2011年第5期75-78,共4页Journal of Ordnance Engineering College

摘　　要：采用一种高效的应力更新算法，运用Fortran语言编写Johnson—Cook本构模型的Vuamt子程序，模拟材料在高速冲击工况下的动态力学性能，研究塑性大应变、高应变率以及温度软化作用对材料力学性能的影响。An efficient stress update algorithms was adopted, and a Vumat subroutine was programmed to introduce the Johnson-Cook constitute model by FORTRAN codes. The dynamic mechanical properties of a material were simulated under the condition of high speed impact and the influence of the large plasticity strain, high strain rate and temperature softening on the material＇s mechanical performance were studied.

关 键 词：冲击 非线性 应力更新算法 Johnson—Cook模型 Vumat 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]