奥氏体不锈钢材料模型有限元动静力学分析  

Dynamic and Static Analysis of Austenitic Stainless Steel Material Model Based on Finite Element Method

作　　者：罗章 何巍[1,2] 夏嘉斌[1,2] 董明利[1] Luo Zhang;He Wei;Xia Jiabin;Dong Mingli(Key Laboratory of Ministry of Education for Optoelectronic Measurement Technology and Instrument,Beijing Information Science and Technology University,Beijing 100192,China;不详)

机构地区：[1]北京信息科技大学光电测试技术及仪器教育部重点实验室 [2]北京信息科技大学光纤传感与系统北京实验室

出　　处：《工具技术》2021年第11期88-92,共5页Tool Engineering

基　　金：高等学校学科创新引智计划(先进光电子器件与系统学科创新引智基地)资助(D17021);载人航天预研项目(20184112043)。

摘　　要：为了降低真实加载试验的风险和复杂程度,根据实际材料特征和属性参数,采用有限元分析方法对比选择了5mm×5mm×2.5mm六面体单元,并进行不锈钢材料模型网格划分及动静力学节点处应力应变分析。结果表明,通过加载50N和60N静态载荷观察到模型最大应力应变位置集中区域靠近约束处,最大应力分别为66.6167MPa和79.9400MPa,最大应变分别为0.412E-03、0.494E-03;加载5min、10min,大小为1~30N的随机载荷进行瞬态分析发现,外部载荷加载时间会影响模型节点处的最大应力应变值。仿真结果说明,有限元法可有效分析不锈钢材料模型受力后节点的应力应变变化,为研究材料的受力损伤及受力疲劳提供了分析方法。In order to reduce the risk and complexity of real loading tests,based on actual material characteristics and property parameters,the 5 mm×5 mm×2.5 mm hexahedron element is selected to do the mesh generation of the stainless steel model and the stress-strain analysis of the dynamic and static nodes by finite element method.The results show that the maximum stress is 66.6167 MPa,79.9400 MPa respectively,and the maximum strain is 0.412 E-03,0.494 E-03 respectively by static analysis under 50 N and 60 N loads.After transient analysis on random loads(1~30 N)for five and ten minutes respectively,it is found that the maximum stress and strain at the model node change with the time of external loading.The simulation results show that the finite element analysis method can effectively analyze the stress-strain changes of the joints of the stainless steel model,and provide an analytical method for the study of the material damage and fatigue.

关 键 词：有限元分析 网格划分 静态分析 瞬态分析 

分 类 号：V252.1[一般工业技术—材料科学与工程] TG142.7[航空宇航科学与技术—航空宇航制造工程]