考虑冲击温度影响的物质点法算法  

Material point method algorithm considering impact temperature influence

作　　者：张静静 董龙雷[2] ZHANG Jingjing;DONG Longlei(School of Mechatronics Engineering,Foshan University,Foshan 528000,Guangdong,China;School of Aerospace,Xi’an Jiaotong University,Xi’an 710049,China)

机构地区：[1]佛山科学技术学院机电工程学院,广东佛山528000 [2]西安交通大学航天航空学院,西安710049

出　　处：《计算机辅助工程》2018年第5期37-41,共5页Computer Aided Engineering

摘　　要：针对超高速冲击使结构瞬间产生极高的温度并造成结构软化现象的问题,提出考虑冲击温度影响的改进物质点法算法,采用Taylor杆的撞击过程模拟分析这一现象。将模拟结果与经典物质点法算法对同一算例的计算结果进行对比,结果显示改进物质点法算法计算结果精度可提高0. 77%。As to the issue that the hypervelocity impact to structure will lead to instant very high temperature and causes structural softening,an improved material point method algorithm considering impact temperature influence is proposed.This phenomenon is simulated by analyzing the impact process of Taylor pole.The simulation results are compared with that of the classical material point method algorithm for the same example.The comparasion results show that the accuracy of the improved material point method algorithm can be increased by 0.77%.

关 键 词：物质点法 塑性变形 冲击温度 超高速冲击 

分 类 号：TB302.3[一般工业技术—材料科学与工程] TB115.1[理学—数学]