共查询到17条相似文献,搜索用时 140 毫秒
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建立了某型号客车的有限元模型,依据欧洲ECE R66法规要求进行了客车动态侧翻碰撞过程的仿真,评价了该车上部结构的变形及其侵入乘员生存空间的状况,仿真分析结果与试验数据一致性较好,说明该有限元模型是准确的.根据多方案仿真结果,对顶横梁、窗立柱等结构进行改进设计,有效提高了其抗变形能力,改善了该车的侧翻安全性能. 相似文献
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对比分析了欧洲、瑞典及美国关于商用车驾驶室强度试验要求的国际法规,针对我国采用的现行欧洲法规ECE R29-02中正面摆锤撞击试验及180°滚翻顶盖准静压试验与实际车辆碰撞事故不符之处,解析了现行ECE R29-02与其修订案ECE R29-03的差异,并进一步研究分析了修订案ECE R29-03新增加的正面A柱摆锤撞击试验、驾驶室侧面摆锤20°撞击试验. 相似文献
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2009年7月31日,苏州金龙海格客车在重庆国家客车质量监督检验中心成功进行了11m客车侧翻试验。这是海格客车连续3年3次通过联合国欧洲经济委员会(ECE)R66《大客车上部结构强度》法规标准试验。 相似文献
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客车车身侧翻刚度仿真研究 总被引:1,自引:1,他引:0
建立客车骨架的有限元模型,依照ECE R66法规,使用LS-DYNA软件对其进行侧翻仿真分析.在此基础上,分别改变客车顶盖、侧围和前后围的材料,并再次进行仿真计算.对比仿真结果发现.增强前后围刚度可有效提高整车的侧翻刚度. 相似文献
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A bus rollover is one of the worst vehicle accidents that can occur. Because of the large numbers of passengers, the casualties
in a bus rollover are often high and severe. The compliance with rollover safety standards for buses and coaches is mandated
by law. This paper presents a comparative analysis of the physical meanings of regulation number 66 of the Economic Commission
for Europe (ECE R66) and standard number 220 of the American Federal Motor Vehicle Safety Standards (FMVSS 220). This comparison
was carried out using a LS-DYNA finite-element analysis. After performing a comparative analysis following ECE R66 and FMVSS
220 assessments, the investigation further demonstrated the distortion configuration of the vehicle superstructure through
the absorbed energy and its distribution over the vehicle and in sections of vehicle superstructure as well as the violation
of the passenger compartment under the rollover testing conditions of both ECE R66 and FMVSS 220. Great differences were found
between ECE R66 and FMVSS 220 in distortion configuration, reflecting differences in capability and rollover testing conditions.
These findings provide a means of evaluating bus superstructure strength and provide guidelines useful in the assessment of
regulations applied to the evaluation of bus rollover strength. 相似文献
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基于两种正面碰撞的轿车耐撞性能仿真与改进研究 总被引:2,自引:0,他引:2
以某轿车为研究对象,建立了整车有限元模型,基于GB 11551—2003《乘用车正面碰撞的乘员保护》和欧洲正面碰撞法规ECE R94.01进行碰撞数值仿真,针对原车在两种正面碰撞中耐撞性能的不足,提出对主要吸能件进行结构改进与材料替换的方案。仿真计算结果表明,在整车质量仅增加3.05kg的情况下,改进方案使整车在正面100%重叠刚性壁障碰撞中加速度峰值降低了6.1g,在偏置40%重叠可变形壁障碰撞中乘员舱侵入量有明显减小。 相似文献