摘要
结合粘塑性本构理论,采用对商业软件LS-DYNA进行二次开发的方法将含损伤型Johnson-Cook本构模型嵌入商业有限元软件中,给出本构迭代算法和计算流程.并以平头和锥头两种弹形的高强度钢穿甲弹贯穿12 mm厚的Weldox靶板的实验为基础,进行数值模拟,实验结果和计算结果符合较好,表明给出的本构算法、含损伤型本构及损伤演化方程是合理可靠的.
We developed and improved constitutive model,using LS-DYNA second development technology to embed a damaged Johnson-Cook constitutive model of commercial finite element software. Detailed description of structure of iterative algorithm and calculation process are presented. For experiments of perforation of 12 mm thick steel plates by 20 mm diameter projectiles with flat and conical noses, numerical simulations are carried out. Calculation and experiment results are consistent well. It indicates that constitutive algorithm,containing damage constitutive model and damage evolution equation are reasonable and reliable.
作者
蒋东
李永池
JIANG Dong;LI Yongchi(Beijing Institute of Space Long March Vehicle, Beijing 100076, China;University of Science and Technology of China, Hefei 230027, China)
出处
《计算物理》
EI
CSCD
北大核心
2018年第3期262-268,共7页
Chinese Journal of Computational Physics
基金
博士后科学基金(2014M560829)
973项目(6133120402)资助
关键词
爆炸力学
穿甲
本构迭代算法
二次开发
mechanics of explosion
penetration
constitutive iterative algorithm
second development
