面向被动安全性的商用车驾驶室轻量化优化  

Lightweight Optimization of Commercial Vehicle Cab for Passive Safety

作　　者：蔡珍珍 刘夫云[1] 刘凯扬 邓聚才 CAI Zhen-zhen;LIU Fu-yun;LIU Kai-yang;DENG Ju-cai(School of Mechanical and Electrical Engineering,Guilin University of Electronic Technology,Guangxi Guilin 541004,China;Dongfeng Liuzhou Motor Co.,Ltd.,Guangxi Liuzhou 545005,China)

机构地区：[1]桂林电子科技大学机电工程学院,广西桂林541004 [2]东风柳州汽车有限公司,广西柳州545005

出　　处：《机械设计与制造》2024年第11期222-226,共5页Machinery Design & Manufacture

基　　金：广西新能源物流商用车协同创新研发及成果转化应用(AA18242036);高性能摩擦离合器关键技术研究与产品开发(AA18242037)。

摘　　要：根据ECE R29-03法规建立了某商用车驾驶室正面摆锤撞击模型,在LS-DYNA中进行碰撞仿真分析,并对整个碰撞过程中驾驶员生存空间进行综合评估,然后在考虑驾驶室被动安全性的同时进行轻量化优化设计。首先,通过相对灵敏度分析筛选出7个板件厚度作为驾驶室轻量化优化的设计变量,以驾驶室质量最小为目标,以转向管柱、仪表板和方向盘的侵入量为约束,选用优化拉丁超立方算法生成样本点,构造Kriging近似模型,并结合第二代遗传算法进行优化。优化结果表明:在保证驾驶室被动安全性前提下,驾驶室质量减轻了13.2kg,取得了较好的轻量化效果。According toECE R29-03,establishing a frontal pendulum impact model of a commercial vehicle cab,solving the impact simulation analysis in LS-DYNA,and comprehensively evaluating the living space of the cab,then,considering the passive safety of the cab for lightweight optimization design.Firstly,selecting 7 thick of parts as design variables to conduct relative sensitivity analysis,with the minimum cab mass as the goal and the steering string,instrument panel and steering wheel intrusion as constraints,using the Optimized Latin Hypercube algorithm to Generated design points and construct Kriging approximate model,using NSGA-II to optimize the problem.We can get a better solution which makes mass decreased by 13.2kg under the premise of ensuring the passive safety of the cab,and a good lightweight effect is achieved.

关 键 词：ECE R29-03 正面摆锤撞击 轻量化 相对灵敏度分析 

分 类 号：TH16[机械工程—机械制造及自动化] U469.21[机械工程—车辆工程]