不同速度下碰碰车碰撞响应和安全性分析  

Research on Collision Response and Safety Analysis of Bumper Cars at Different Speeds

作　　者：赵九峰 ZHAO Jiufeng(Special Equipment Safety Inspection and Research Institute of Henan Province,Zhengzhou 450000,China;Collaborative Innovation Center for Aviation Economy Development of Henan Province,Zhengzhou 450046,China)

机构地区：[1]河南省特种设备安全检测研究院,河南郑州450000 [2]航空经济发展河南省协同创新中心,河南郑州450046

出　　处：《洛阳理工学院学报（自然科学版）》2023年第2期56-60,共5页Journal of Luoyang Institute of Science and Technology：Natural Science Edition

基　　金：河南省科技攻关项目(212102410009).

摘　　要：碰碰车不同撞击初速度下,传统理论计算难以精确获取碰撞时缓冲胎吸收能量大小和车架应力变化,且样机碰撞试验过于昂贵,建立碰碰车与防撞梁组成的单自由度质量-弹簧系统模型很有必要。利用Workbench对碰碰车与防撞梁的碰撞过程进行动态模拟,对4种工况下不同碰撞初速度进行模拟计算,获取不同速度下缓冲胎吸收能量的时间历程曲线和车架最大应力的时间历程曲线。缓冲胎在碰撞过程中,随着碰撞速度的增加,吸能效果逐渐减小,但吸收总能量大于97%,起到很好的缓冲吸能作用,应力安全系数大于3.5,满足设计要求。Based on the different initial impact velocities of bumper cars,it is difficult to accurately obtain the absorbed energy and the change of stress by traditional theoretical calculation,with the expensive prototype collision test.The single degree of freedom mass-spring system model composed of bumper car and anti-collision beam is established.The collision process between bumper car and anti-collision beam is dynamically simulated by Workbench.The collision simulation is carried out for four initial speeds,and the time history curve of energy absorbed by buffer tire and the time history curve of maximum stress of frame are obtained under different speeds.The results show that the energy absorption effect of buffer tire decreases gradually with the increase of collision speed,but the total energy absorbed is more than 97%,which plays a good role in buffering and energy absorption.The stress safety factor is greater than 3.5,which meets the design requirements.

关 键 词：碰碰车 碰撞分析 时间历程曲线 安全系数 

分 类 号：TS952.81[轻工技术与工程]