【摘要】 本文在多刚体动力学Kane方法的基础上,推导了二维多刚体系统矩阵形式的动力学方程。用于一个具体的汽车乘员/座椅系统模型,计算了汽车正碰过程中人体的运动姿态、加速度、速度和位移响应,以及安全带的受力等特性。与试验结果比较,证明了理论计算的正确性。本文在实例计算的基础上,分析研究了系统参数变化对人体响应的影响以及安全带在汽车碰撞过程中对人体的保护作用。更多还原

【Abstract】 Based upon Kane method, the motioqn equations of a two-dimensional restrained multi-body mechanical system is deduced and applied to a specific vehicle-occupant system. Responses of the human occupant in certain frontal crash are predicted. The analytical simulation of vehicle-occupant motion is proved valid by comparing the computed results with that of sled-crash tests. Analysis for the effect of restraining belts on vehicle-occupant protection and the sensitivity of occupant respons to system parameters are also presented in the paper.更多还原