摘要
结合MADYMO和PC-CRASH仿真分析软件重现了长沙地区一起汽车与12岁儿童行人碰撞事故的动力学响应过程.首先,根据事故现场采集的详细数据,利用PC-CRASH分析得到了与事故数据最吻合的碰撞参数;然后根据这些参数定义了MADYMO模型的边界和初始条件.建立了肇事车辆的多刚体(MBS-FACET)和有限元(FE)2种数学模型,应用MADYMO软件中的SCALER模块计算得到12岁儿童行人模型.通过仿真计算得到儿童行人与车辆碰撞的动态响应过程以及头部损伤的相关物理参数.结果表明,2种仿真模型均很好地重现了事故中行人的整个运动过程及头部碰撞情形,仿真计算得到的头部生物力学响应参数与儿童行人损伤诊断结果吻合较好.
A real world of a 12-year-rid child pedestrian accident in Changsha was reconstructed by using MADYMO and PC-CRASH programs to study pedestrian dynamic responses during the collision. First, PC-CRASH program was employed to find the dynamic parmeters, which correlated well with the accident track according to the information from the on-spot acddent investigation. These parameters were then applied to MADYMO models as boundary and initial conditions. A facet model（MBS-FACET）and a finite dement （FE） model of the passenger car were developed based on the accident car. A mathematical modal of the 12-year-old child was scaled down from an adult model with the SCALER module of MADYMO. The kinematics response and injury related parameters of the child were obtained from the accident reconstructions. The results have shown that the overall kinematics response and the head impact conditions of the child in each reconstruction am quite similar. The output of head injury parameters corresponds well to the injury outcomes from clinical diagnosis.
出处
《湖南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2009年第1期35-40,共6页
Journal of Hunan University:Natural Sciences
基金
国家科技部863计划项目(2006AA110101)
教育部'111计划'资助项目(111-2-11)
关键词
儿童行人
事故重建
头部损伤
数值仿真
child pedestrian
accident reconstruction
head injury
mathematical simulation
