科技通报
科技通報
과기통보
Bulletin of Science and Technology
2015年
9期
240-244
,共5页
车身骨架%静态分析%拓扑优化
車身骨架%靜態分析%拓撲優化
차신골가%정태분석%탁복우화
body frame%static analysis%topology optimization
电动车续航里程过短是影响推广应用的主要瓶颈因素之一，而电动汽车车身结构的轻量化是提高续航里程的有效途径。本文基于电动汽车车身骨架的静态分析，以车身骨架重量最小为优化目标，应用OptiStruct软件进行拓扑优化设计，得到车身骨架结构的最佳材料分布方案。最后结合Hyper?Works以及通用数值分析软件Radioss对优化前后的车身骨架进行静态分析，从应力、变形、重量等方面对计算结果进行比较。结果显示，优化后保证了车身骨架强度和刚度要求。车身骨架下端部分质量减轻，并大大降低焊缝长度。
電動車續航裏程過短是影響推廣應用的主要瓶頸因素之一，而電動汽車車身結構的輕量化是提高續航裏程的有效途徑。本文基于電動汽車車身骨架的靜態分析，以車身骨架重量最小為優化目標，應用OptiStruct軟件進行拓撲優化設計，得到車身骨架結構的最佳材料分佈方案。最後結閤Hyper?Works以及通用數值分析軟件Radioss對優化前後的車身骨架進行靜態分析，從應力、變形、重量等方麵對計算結果進行比較。結果顯示，優化後保證瞭車身骨架彊度和剛度要求。車身骨架下耑部分質量減輕，併大大降低銲縫長度。
전동차속항리정과단시영향추엄응용적주요병경인소지일，이전동기차차신결구적경양화시제고속항리정적유효도경。본문기우전동기차차신골가적정태분석，이차신골가중량최소위우화목표，응용OptiStruct연건진행탁복우화설계，득도차신골가결구적최가재료분포방안。최후결합Hyper?Works이급통용수치분석연건Radioss대우화전후적차신골가진행정태분석，종응력、변형、중량등방면대계산결과진행비교。결과현시，우화후보증료차신골가강도화강도요구。차신골가하단부분질량감경，병대대강저한봉장도。
The insufficient Mileage is one of the major bottleneck factors which affect the promotion and application of the electric cars. It is effective way to improve the mileage of electric vehicle that reduces the weight of an electric vehicle body.Based on the electric vehicle body frame static analysis, the minimum body frame weight as the optimization goal,OptiStruct software was used to topology optimization design, get the optimal material distribution program of body frame structure.Finally HyperWorks and general numerical analysis software Radioss were used to static analysis of body frame before and after optimization, from the stress, deformation, weight and other aspects of the calculation results were compared. The results showed that after optimizion the body frame meet the strength and stiffness requirements. The lower part of the body frame quality decreased,and the length of the weld was ignificantly reduced.
