撞击损伤过程的有限元分析  

Finite Elements Analysis on Impact- damage Procedure

作　　者：宋亚新[1] 沙德松[2] 

机构地区：[1]同济大学结构理论研究所,上海200092 [2]大连理工大学力学系,大连116023

出　　处：《同济大学学报（自然科学版）》1998年第3期255-259,共5页Journal of Tongji University:Natural Science

基　　金：高等学校博士学科点专项科研基金

摘　　要：运用连续介质损伤力学理论．在接触-冲击问题中引入由Lemaitre提出的一个各向同性韧性损伤模型，通过有限元法来计算、反映接触-冲击过程中材料性能的劣化程度和进程，并以有限单元间的分离来模拟诸如“穿甲”等一类包含材料破碎的接触-冲击过程．为在接触-冲击问题中考虑损伤的影响，提供了一般的方法．The theory of Continuous Damage Mechanics (CDM) is applied to contract - impat Problems in this paper. By using the Lemaitre's model of isotropic ductile damage and finite elemend methods, the deterioration of material's property occurred in contact - impact procedure is computed, and the emergence of cracks in such contact - impact procedure as piercing is simulated by separating the elements connected with each other originally. This paper presents a general method to consider the effects of during the contact - impact procedure.

关 键 词：连续介质 损伤力学 接触-冲击 有限元法 

分 类 号：O346.5[理学—固体力学]