摘要
为了验证某新型汽车蓄电池支架是否满足设计要求,首先测试纵梁端在不同路面的加速度,测试结果表明其中搓板路的X、Y和Z向的加速度分别为2.3g、2.6g和0.6g。然后基于实测的振动加速度和频率响应方法对该蓄电池支架进行强度分析,分析结果表明蓄电池支架在X和Y向的最大应力均大于其材料屈服强度,不符合设计要求。再基于Isight集成平台和邻域培植多目标遗传算法对蓄电池外支架和内支架的厚度进行优化设计,获取其最优厚度值,优化之后其X、Y和Z向的最大应力都小于其许用应力,均能够满足强度性能要求,安全系数均大于目标要求值,同时其支架总质量也有所降低,达到了轻量化的目的,最后蓄电池支架的优化方案顺利地通过了整车道路耐久试验。
Aiming at verifying whether a new automobile battery bracket meets the design requirements.Firstly, each road vibration acceleration of carling were collected,the test results showed that the X,Y and Z directions washboard road vibration acceleration are 2.29g,2.61g and 0.54g.Secondly,the strength of battery bracket was analyzed based on actual measured vibration acceleration and frequency response method.The results showed that the maximum stress in the X and Y directions of the battery bracket exceed the yield strength of the material,it cannot meet the design requirements.Lastly,the thickness of internal and external battery brackets was optimized based on Isight integrated platform and neighborhood cultivation genetic algorithm.The optimal thickness was obtained,the maximum stress in the X,Y,and Z directions is less than the allowable stress,all of the strength can meet the requirements.The safety factor is better than the target and the weight was reduced,the purpose of.weight reduction was also achieved and the optimization bracket had passed the road test.
作者
索明何
吴庆捷
SUO Minghe;WU Qingjie(Electronic Engineering Research Center,Huai'an College of Information Technology,Huaian Jiangsu 223003,China;College of Mechanical and Electrical Engineering,Nanehang University,Nanchang 330031,China)
出处
《机械设计与研究》
CSCD
北大核心
2019年第1期196-199,204,共5页
Machine Design And Research
基金
江苏省高校自然科学基金资助项目(16KJB520049)
关键词
蓄电池支架
加速度
频率响应
强度
优化设计
storage battery bracket
acceleration
frequency response
strength
optimization design
作者简介
索明何(1979-),男,讲师;主要研究方向:嵌入式系统与汽车电子技术,已发表论文5篇。E-mail:suominghe@126.com.
