地铁碰撞事故中站姿假人的响应仿真与损伤预测

发布时间：2018-06-04 12:08

本文选题：假人 + 地铁　；参考：《铁道学报》2015年01期

【摘要】：地铁车辆中站姿乘员的复杂状态是造成难以预测碰撞损伤的主要因素之一。本文针对站姿假人约束状态、站立方向进行定义与分类,以特定碰撞场景(25km/h两车对撞)下已实现的车体碰撞过程仿真结果为边界条件,建立特定场景下假人损伤评估方法与相关参数阈值定义;获得基于假人的姿态响应、头部加速度、胸部加速度以及腿部受力碰撞时间历程仿真数据。损伤预测表明:站姿乘员在地铁碰撞事故中受到伤害的部位主要集中在头部、颈部和胸部,可能导致乘客脑震荡,颅骨骨折,肋骨骨折等。扶手提供的保护有限。乘员站立方向与损伤程度之间无显著规律,假人碰撞响应的力学参数最大值可作为结构设计与预测的依据。
[Abstract]:One of the main factors that make it difficult to predict the impact damage is the complex state of the station occupants in subway vehicles. In this paper, the standing direction is defined and classified according to the constraint state of the standing dummy. The boundary condition is the simulation result of the vehicle body collision process realized under the specific collision scene (25km / h). The damage assessment method of dummy and the definition of relevant parameter threshold were established in the specific scene, and the simulation data of posture response, head acceleration, chest acceleration and impact time history of leg force were obtained based on the dummy's attitude response, head acceleration, chest acceleration and leg force impact time history. The injury prediction shows that the injured parts of the passengers in the subway crash mainly focus on the head neck and chest which may lead to concussion skull fracture rib fracture and so on. Handrails provide limited protection. There is no significant rule between the standing direction of the occupants and the degree of damage. The maximum mechanical parameters of the impact response of the dummy can be used as the basis for the design and prediction of the structure.
【作者单位】：北京交通大学机械与电子控制工程学院;北京地铁车辆装备有限公司技术中心;
【基金】：国家自然科学基金(51075027) 中央高校基本研究业务费(2012JBZ004)
【分类号】：U231.96;U298.5

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