泡沫铝压缩力学行为的有限元仿真.pdfVIP

计算机仿真 2010 年7 月 第27 卷第7 期 文章编号:1ω6 -9348(2010)07 -0317-04 泡沫铝压缩力学行为的有限元仿真 于英华1 ，杨志2 ，梁冰3 (1.辽宁工程技术大学机械工程学院，辽宁阜新 123仪附;2. 辽宁工程技术大学材料科学与工程学院，辽宁阜新 123创趴 3. 辽宁工程技术大学力学与工程学院，辽宁阜新 123创)()) 摘要:为推动泡沫铛性能和应用研究，为提高刚度和强度，必须加强泡沫铝力学行为的研究。根据开孔泡沫铝的结构特点， 对1t结构进行丁合理的简化.采用 AN5Y5 ILS - DYNA 软件对对泡泳锦压缩行为进行有限元仿真研究，得出了泡沫铝压缩 变形过穆和泡沫铝应力(Ji巨变关系)结构参数(泡沫倒孔径、泡沫铝相等密度)及成变率的变化规律。证明规律与物理实验 研究结果相一致，从而证明了有限元仿真}j法的合理性和可行性。 关键询:泡沫错:压缩行为;有限元仿真 中图分类号:0348. 7 ~献标识码:B Finite Element Simulation of Foamed Aluminum Compression Behavior l 2 3 YU Ying 叩 hua ,YANG Zhi ,LIANG Bing (1. College of Mechanical Engineering College. liaoning Technical University , Fuxin liωning 123仪泊， China; 2. College of Material Science and Engineeri吨. Liaoning Technical University. Fuxin liaoni吨 123创泊. China; 3. Sch∞1 of Mechanics and Engineeri吨， Liaoning Technical University. Fuxin liωni吨 123创泊. China) AßSTRACT: In oroer to push forwaro the study on properti嗣 and applying of foamed aluminum. the study on me- chanical behavior of foamed aluminum must be intensi.fied. In this paper. the 脚ucture of foamed aluminum is simpli- fied by it s structure characteristics. Based on 也就， finite element simulation of foamed aluminum compression b• havior is studied with ANSYS /LS DYNA. The results derived from the simulation of deformation proces8 of foamed aluminum and influenc晤。n compressing stres啤叩 strain relation wi伽 foamed aluminum s geometrical 阳rameter (cell diameter , relative density) as well as str