摘要
为解决碳纤维复合材料电池箱体轻量化设计中的铺层设计问题,现以某款纯电动汽车的电池箱体为研究对象,采用T300/5224复合材料,综合垂直颠簸、急刹车和急转弯工况,利用Opti Struct通过自由尺寸优化、尺寸优化、层叠次序优化来得到最佳的铺层分布方案;采用对称布置形式,其目的是减少弯扭变形与面内力的影响;各铺层固化厚度均为0.125 mm,最终得到的最佳铺层顺序为[±45/0/±45/0/90/0/90/0/±45/0/90/0/90/0/±45/90/±45/90/±45/90/±45/90]s。在满足相关工况的要求下,进行强度校核,使刚度得到提高,同时重量也大大减轻。优化后的质量与同等钢制电池箱体相比减轻了65.89%,充分发挥了复合材料比强度高、比模量大等优点,轻量化效果明显。
In order to solve layer design problems of lightweight carbon fiber composite battery box,a battery box of PEV is taken as the research object by using carbon fiber composite material T300/5224. Under the conditions of vertical bumpy,sudden braking and sharp turning,Opti Struct was used to optimize the plies distribution through free size optimization,size optimization and shuffle optimization. The symmetrical arrangement was used to reduce the influences of coupling stiffness,and the manufactured thickness of each ply was 0. 125 mm. The best plies order is found to the [± 45/0/± 45/0/90/0/90/0/± 45/0/90/0/90/0/± 45/90/± 45/90/± 45/90/± 45/90]s.Under the premise of meeting the performance demands,component strength check is performed so that the stiffness of battery box is improved and its weight is greatly reduced. Compared with the same steel battery box,the weight is reduced by 65. 89%,the advantages of high specific strength and large specific modulus of the carbon fiber composite material are fully exerted,and the effect of lightweight is obvious.
作者
段端祥
赵晓昱
DUAN Duan-xiang;ZHAO Xiao-yu(School of Automotive Engineering, Shanghai University of Engineering Science, Shanghai 201620, China)
出处
《玻璃钢／复合材料》
CSCD
北大核心
2018年第6期83-88,共6页
Fiber Reinforced Plastics/Composites
关键词
碳纤维复合材料
自由尺寸优化
尺寸优化
铺层次序优化
轻量化
carbon fiber composite material
free size optimization
size optimization
shuffle optimization
lightweight
