【摘要】 为了向交通事故再现提供新的依据,研究了动量冲量法与多体动力学法结合的乘员运动仿真,提出了两类算法的耦合方法.将该方法应用到真实交通事故,依据乘员被抛出车外后的落点位置进行事故鉴定.建立了包括车辆、乘员、地面在内的全三维多刚体仿真模型,以等效加速度脉冲代替碰撞冲击信号,再现乘员的车内和车外运动,并分析动量交换时间对鉴定结果的影响.将仿真结果与法医鉴定结果比较,初步验证了该模型和方法的可行性.更多还原

【Abstract】 In order to provide new proof for accident reconstruction,the method of occupant kinematics reconstruction using the coupling of momentum-based method and multi-body dynamics method was studied.For realizing the couple between two algorithms,an equivalent acceleration impulse was substituted for the real impact.Based on a real accident,a three dimension multi-body model including dummy,vehicle and ground was established.Using the coupling method,the kinematics of two occupants involved in the accident was reconstructed,and the influence of the momentum exchange time was also considered.The feasibility of this method was verified by the forensic medical identification.更多还原