PENG Qian, JIANG Xiao-qing, YANG Ji-kuang, E C CHIRWA
(1.State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan Univ, Changsha, Hunan410082, China；2. School of Built Environment & Engineering, University of Bolton,Bolton, BL3 5AB, UK) 在知网中查找 在百度中查找 在本站中查找
Affiliation:
Fund Project:
摘要
|
图/表
|
访问统计
|
参考文献
|
相似文献
|
引证文献
|
资源附件
摘要:
研究了小型汽车在双侧顶盖抗压试验中的安全性能，评估了不同滚动角及俯仰角组合对顶盖强度的影响，并分析了顶盖近侧及远侧之间抗压性能的差异.通过顶盖抗压试验对汽车的有限元模型进行验证；基于不同滚动角度及俯仰角度进行全因子正交试验设计.虚拟试验结果表明：俯仰角和滚动角的变化对顶盖抗压性能有显著影响，在127 mm (5 inch)的压缩行程中，当俯仰角相同时，在10°~45°滚动角范围内随着角度增加顶盖两侧强度持续下降；而当滚动角相同时，在5°~15°俯仰角范围内随着角度增加顶盖两侧强度逐渐减弱.总体来看，近侧顶盖的强度性能明显高于远侧.
This paper investigated the safety behavior of a small car subjected to double-sided roof crush test, assessing the effect of different pitch and roll angle combinations on the roof crush strength and evaluating the difference in strength between near and far sides. A finite element model of Ford Fiesta was initially validated against the roof crush test, and was subsequently employed in virtual testing according to a full factorial method DOE (design of experiments) based on the variations of roll and pitch angles. The results have shown that the roll and pitch angles are a function of roof strength and greatly influence the overall collapse behavior. Within a 127 mm crush distance (5 inches), the strength of the two-sided roof decreases as the roll angle varies from 10° to 45° with a fixed pitch angle; the strength of the two-sided roof decreases as the roll angle increases from 5° to 15° with a fixed roll angle. Furthermore, the roof on the near side generally performs better and more strongly than the far side.
