适于板料激光冲击成形的弹塑性本构模型  

Elastic-plastic Constitutive Theory Suited for Laser Impact Deformation

作　　者：高立[1] 

机构地区：[1]潍坊学院机电工程系

出　　处：《农业机械学报》2006年第11期129-132,128,共5页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家自然科学基金资助项目(项目编号:50475127;50275068);国家"863"高技术研究发展计划资助项目(项目编号:2002AA336030)

摘　　要：基于几种经典的弹塑性本构模型理论,利用ABAQUS软件对TA2板料进行了激光冲击的仿真研究,并做了冲击试验。比较试验和仿真结果,以期找到板料在激光冲击的高应变率情况下,表征材料力学性能的本构模型。结果表明,硬化行为和应变率效应对板料激光冲击下变形有比较显著的影响,基于Johnson-Cook本构模型的仿真结果与试验结果最为接近。The precision of numerical simulation in metal sheet forming in a very great degree depends on if it can accurately define the mechanics performance of material. Based on several classical elastic-plastic constitutive theory and by using of ABAQUS the simulation and experiment of laser shocking TA2 metal sample was done. The results were compared in order to find the most desirable material constitutive equation in the case of high-strain-rate plastic deformation the comparison result indicates that in comp...

关 键 词：钛合金板 激光冲击 弹塑性变形 有限元法 数值模拟 

分 类 号：TG386[金属学及工艺—金属压力加工]