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汽车乘员约束系统仿真及其参数优化

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在汽车有限元模型基础上建立了乘员约束系统模型,进行了100%正面刚性壁碰撞仿真分析。结合碰撞分析中假人伤害值,采用灵敏度分析筛选出对约束系统影响较大的参数作为设计变量,构建了关于加权伤害指标的Kriging代理模型,运用多岛遗传算法进行参数优化。结果表明,加权伤害指标降低了38。92%,达到设计目标。
Simulation of Automobile Occupant Restraint System and Optimization of Its Parameters
A passenger restraint system model was built based on the finite element model of the car,and a 100%frontal rigid wall collision simulation analysis was conducted.Incorporating the dummy in-jury values from the collision analysis,sensitivity analysis was employed to identify parameters that have a significant impact on the constraint system as design variables.Subsequently,a Kriging surro-gate model for weighted injury indicators was constructed,followed by parameter optimization using a multi-island genetic algorithm.The results show that the weighted injury index decreases by 38.92%,achieving the design goal.

restraint systemsurrogate modeloccupant injury

杨凯、吴胜军、胡秋雷

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湖北汽车工业学院 汽车工程学院,湖北 十堰 442002

约束系统 代理模型 乘员伤害

2024

湖北汽车工业学院学报
湖北汽车工业学院

湖北汽车工业学院学报

影响因子:0.304
ISSN:1008-5483
年,卷(期):2024.38(2)