基于人体生物力学有限元模型的约束系统参数优化  

Parameter Optimization of the Restraint System Based on the Finite Element Model of Human Biomechanics

作　　者：裴永生[1,2] 刘壮[1,2] 张世哲 Pei Yongsheng;Liu Zhuang;Zhang Shizhe(Research Institute of Health Industry Technology,Yanshan University,Qinhuangdao 066004;Hebei Key Laboratory of Special Delivery Equipment,Yanshan University,Qinhuangdao 066004;BYD Auto Industry Company Limited,Shenzhen 518118)

机构地区：[1]燕山大学,康养产业技术研究院,秦皇岛066004 [2]燕山大学,河北省特种运载装备重点实验室,秦皇岛066004 [3]比亚迪汽车工业有限公司,深圳518118

出　　处：《汽车技术》2022年第10期30-36,共7页Automobile Technology

摘　　要：建立了人体胸部生物力学有限元模型,通过肋骨三点弯曲试验和胸部碰撞块冲击试验验证了模型的有效性。通过实车正面碰撞试验获取车身加速度,建立约束系统有限元模型,根据实车试验条件进行碰撞仿真,获取胸部压缩仿真曲线及心脏、肺部和肝脏等胸腹部器官压力。针对乘员生物力学约束系统有限元模型,采用最优拉丁超立方试验设计方法采样,结合采样数据构建响应面近似模型,利用退火算法对汽车乘员约束系统进行了优化设计。优化后的仿真结果表明,正面碰撞中,乘员胸部压缩量减小,心脏、肺部和肝脏等胸腹部器官压力相对降低。The Finite Element Model(FEM) of human chest biomechanics is established, and the validity of the model is verified by three-point bending test of ribs and impact test of chest collision block. The acceleration of the vehicle body is obtained through the frontal crash test of the real vehicle, the finite element model of the restraint system is established, and the simulated crash test is carried out according to the actual test situation, so as to obtain the simulation curve of chest compression and the pressure of abdominal organs such as heart, lung and liver. For the finite element model of occupant biomechanical restraint system, the optimal Latin Hypercube Design(LHD) method is adopted for sampling, and the response surface approximation model is constructed based on the sampled data, and the optimal design of vehicle occupant restraint system is carried out by using the annealing algorithm. The simulation results show that in the frontal crash test, the compression of chest decreases, and the pressure of abdominal organs such as heart, lung and liver decrease relatively.

关 键 词：生物力学有限元模型 约束系统 代理模型 优化设计 

分 类 号：U461.91[机械工程—车辆工程]