摘要
以某车用电池箱为研究对象,基于振动疲劳寿命预估方法,利用OptiStruct软件对电池箱结构进行频率响应分析,获得频率和电池箱结构二者之间的应力传递函数;在nCode软件中关联电池箱载荷工况与功率谱密度,结合电池箱结构材料的疲劳特性并运用Miner线性累积损伤法则,以Goodman方法修正平均应力后得到电池箱结构各位置的疲劳寿命分布云图。结果表明,nCode软件中得到的疲劳破坏区域与实际中出现的疲劳破坏区域具有一致性;基于有限元仿真分析方法提供的电池箱结构疲劳损伤优化解决方案能有效优化电池箱产品设计开发流程,缩短产品设计开发周期。
Taking a car battery box as study object,by use of vibration fatigue life prediction method,we conducted the battery box structure frequency response analysis with the help of OptiStruct software,and obtained the stress transfer function between the frequency and the battery box structure.In nCode software,the battery case load conditions were associated with power spectral density.Combined with the fatigue characteristics of the battery box structure material,based on Miner linear cumulative damage rule,corrected by Goodman method,the fatigue life contours of the battery box structure were obtained.The areas of fatigue damage in the actual application were consistent with the results obtained by NCode software.The finite element simulation analysis results provide the optimization solution for the battery box structure design,and shorten the product design and development cycle.
出处
《机械工程与自动化》
2016年第5期31-33,36,共4页
Mechanical Engineering & Automation
基金
国家外专局高端外国专家项目(GDT20153600065)
福建省教育厅JK项目(JK2014036)
福建省高校杰出青年科研人才培育计划
厦门理工学院科技项目(XKJ201501)
