摘要
文章采用数值仿真和实车验证方法,对某12m大客车正面碰撞安全性能进行分析研究。根据分析结果对原客车前部结构进行改进设计,主要包括碰撞吸能器、方向盘前向翻转结构及贯通式支撑结构等,并通过设计不同碰撞速度和整车质量,对改进后的车辆进行安全性能验证。仿真结果表明,改进方案可有效减少客车前部结构的变形量,保障驾驶员生存空间不被侵入,降低乘客损伤值;在50 km/h碰撞速度下,驾驶员空间侵入严重,乘客损伤超过标准;在30 km/h碰撞速度下,改进结构能够满足不同载重状态的碰撞安全要求,研究结果对客车被动安全性的提高具有较好的工程应用价值。
In this paper,the frontal crash safety performance of a 12 m coach is examined and studied using numerical simulation and experimental approaches.According to the analysis results,the front structure of the original coach is enhanced and constructed,including the collision energy absorber,steering wheel forward flip structure and through support structure.Finally,the improved coach is verified by designing different crash speeds and overall vehicle mass.The results indicated that the improved solution can effectively reduce the deformation of the front structure of the coach,protect the driver's living space from being invaded and reduce the passenger injury value;the passenger damage exceeds the standard at a crash speed of 50 km/h,nevertheless the upgraded structure can meet the crash safety standards for various load states at a crash speed of 30 km/h.The research results have good engineering application value for improving the passive safety of coaches.
作者
司俊德
孟照雨
王铨溥
SI Junde;MENG Zhaoyu;WANG Quanpu(School of Mechanical and Electrical Engineering,Henan University of Technology,Zhengzhou 450001,China)
出处
《汽车实用技术》
2023年第16期80-85,共6页
Automobile Applied Technology
基金
河南省高等学校重点科研项目计划(22A460011)
河南工业大学高层次人才基金项目(2019BS062)。
关键词
结构改进
正面碰撞
仿真分析
大客车
被动安全
Structural improvement
Frontal crash
Simulation analysis
Coach
Passive safety
