某微卡汽车侧面碰撞仿真分析与优化设计
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1.青岛理工大学;2.北汽福田奥铃汽车厂;3.青岛理工大学机械与汽车工程学院

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U461.91

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Simulation Analysis and Optimization Design of Side Impact of a Micro-Car
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Qingdao University of Technology

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    摘要:

    为了研究某微卡汽车在侧面碰撞过程中假人的胸腔与头部指标大于法规约束值的问题,以原方案的侧面碰撞仿真分析结果与海湾地区的法规为依据,选取车门与B柱内外板厚度、防撞杆与B柱内部缓冲结构厚度和门槛内吸能盒厚度与屈服强度为随机变量,假人的胸腔、头部、腹部和骨盆为输出响应值,确定了响应面模型;结合可靠性理论、一次二阶矩试验方法、优化方法与响应面模型,对微卡汽车的侧面结构进行优化设计,确定了使输出响应值最优的随机变量的各项参数值,并进行仿真分析。结果表明:优化方案使假人的各项伤害值均相应减少且小于法规约束值;提高了微卡汽车的侧面防撞性能;降低了侧面碰撞事故中乘员的致死率与致伤率。

    Abstract:

    In order to study the problem that the dummy"s thoracic and head index is larger than the regulatory constraint in the side collision process of a micro-car. the thickness of the inner and outer plates of the door and the B-pillar, the thickness of the internal bumper structure of the B-pillar and anti-collision bar and the thickness and yield strength of the crash box inside the threshold are random variables, the thoracic cavity, head, abdomen and pelvis are the output response values based on the results of the side impact simulation analysis of the original plan and the regulations of the Gulf region, and the response surface model is determined. The reliability theory, the first second moment test method, the optimization method and the response surface model are used to optimize the side structure of the micro-car vehicle, and the parameter values of the random variables that make the output response value optimal are determined and simulated. The results show that the optimization scheme makes the damage value of the dummy correspondingly reduced and less than the regulatory limit value; the side collision performance of the micro-car is improved; the fatality and injury rate of the occupant in the side collision accident are reduced.

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郑龙月,王吉忠,杨科彪,等. 某微卡汽车侧面碰撞仿真分析与优化设计[J]. 科学技术与工程, 2019, 19(32): 332-336.
ZHENG Long-yue,,YANG Ke-biao, et al. Simulation Analysis and Optimization Design of Side Impact of a Micro-Car[J]. Science Technology and Engineering,2019,19(32):332-336.

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  • 收稿日期:2019-04-27
  • 最后修改日期:2019-06-10
  • 录用日期:2019-07-09
  • 在线发布日期: 2019-12-04
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