基于灵敏度分析的某纯电动车白车身轻量化研究  

Research on Car Body Lightweight of Electrical Vehicle Based on Sensitivity Analysis

作　　者：葛绪坤[1] 何丽 杨建森[1] GE Xu-kun;HE Li;YANG Jian-sen(China Automotive Technology and Research Center Co.Ltd.,Tianjin 300300,China)

机构地区：[1]中国汽车技术研究中心有限公司,天津300300

出　　处：《北京理工大学学报》2018年第A01期128-132,共5页Transactions of Beijing Institute of Technology

摘　　要：纯电动汽车迎来快速发展时期,但限于电池包的质量,电动汽车续航里程的提升存在一定限制.文中以某纯电动汽车白车身为研究对象,建立了基于刚度和模态的灵敏度仿真分析模型,以白车身质量最小为目标,通过计算获得了设计变量对于目标的灵敏度值.基于灵敏度分析结果,结合工程经验,制定出合理的车身轻量化方案,在性能不明显降低的基础上实现白车身减重6.2kg,为开发过程中进行纯电动汽车车身轻量化提供参考.Electrical Vehicle is being in a period of rapid development,however,there are certain restrictions on the improvement of the mileage because of battery pack quality.A sensitivity analysis model of a body in white(BIW)for the electrical vehicle(EV)was established based on stiffness and modal analysis.Taking the minimum weight of BIW as the optimal objective,the design variable sensitivities were obtained with correlation calculation.Based on the sensitivity analysis and engineering experience,a reasonable plan was worked out for body weight reduction.The results show that,the weight of BIW can be reduced 6.2 kg without influence the performance significantly,presenting a reference for EV lightweight.

关 键 词：灵敏度分析 纯电动车 白车身 轻量化 

分 类 号：U463[机械工程—车辆工程]