工程车辆翻车过程中两点式安全带约束效能分析  

Restraint effectiveness of two-point seat belts in rollover accidents of engineering vehicles

作　　者：魏秀玲[1,2] 王国强[1] 郝万军[1] 张英爽[1] 张显余[2] 王继新[1] 

机构地区：[1]吉林大学机械科学与工程学院,长春130022 [2]空军航空大学航空机械系,长春130022

出　　处：《农业工程学报》2009年第8期119-123,共5页Transactions of the Chinese Society of Agricultural Engineering

基　　金："863"计划先进制造领域课题(2007AA04Z126);国家自然科学基金项目(50775095)

摘　　要：为了研究工程车辆翻车过程中驾驶员的动态响应,建立了某工程车辆90°侧翻的仿真模型。模拟有无两点式安全带、有无座椅扶手时50百分位和95百分位两种假人的运动状态,进而分析了在翻车过程中安全带对于不同身材驾驶员的约束作用以及与座椅扶手间的关系。结果表明:佩戴安全带减少了驾驶员被抛出车外造成严重伤害的可能;身材高大的驾驶员在翻车过程中头部和躯干偏离距离更大,增加了与驾驶室内坚硬部件接触碰撞的风险。安全带与座椅扶手配合使用,减小了假人头部的偏移量,从而降低头部与驾驶室内部部件发生碰撞造成严重伤害的可能,约束效果更佳。A simulation model for a certain engineering vehicle was established to analyze the dynamic response of the operator in the accident of 90° lateral rollover. The motions of 50^th percentile and 95^th percentile human body model were simulated under these conditions： with and without wearing lap belt; with and without armrests. The restraint effectiveness of lap belt for different human sizes and the relationship between it and armrests were simulated by the established model. The results show that wearing a lap belt can reduce the likelihood of serious injury caused by operator ejection from the vehicle; the head and upper torso excursion for the larger operator model greatly increase the risk of interaction with hazardous features in the cab. When wearing a lap belt, the armrests tend to reduce the amount of head excursion and the severity of the head impact with the internal features of the cab, so the restraint effectiveness is better.

关 键 词：工程车辆 约束效能 仿真 两点式安全带 翻车 

分 类 号：TH243[机械工程—机械制造及自动化]