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为了研究车门部件对汽车侧面碰撞安全性的影响,以实际交通事故中的碰撞角度和碰撞速度为随机变量,选取车门的内板、外板和防撞杆的材料和尺寸作为设计变量,将试验设计、响应面模型、可靠性理论和优化算法相结合,构建了基于产品质量工程的汽车车门可靠性优化设计模型。分析了确定优化、可靠性优化和初始设计对汽车侧面碰撞影响的差异。结果表明:确定性优化和可靠性优化都能提高汽车的侧面碰撞耐撞性能,且与传统的确定性优化相比,虽然可靠性优化使得质量略有增加,但是侵入量和侵入速度却都有所减少且远离约束边界,它们的可靠度分别为0.957和0.963,满足可靠性设计要求。因此,可靠性优化结果不仅较好地满足汽车车门的耐撞性要求,同时也能使车门的使用可靠性显著提高。
In order to study the impact of door components on the safety of vehicle side collision, taking the collision angle and collision speed in actual traffic accidents as random variables, the material and dimensions of the inner panel, outer panel and crash bar of the vehicle door are selected as design variables. Design, response surface model, reliability theory and optimization algorithm, the optimal design model of vehicle door reliability based on product quality engineering is constructed. The differences between determining the optimization, reliability optimization and initial design on the vehicle side impact are analyzed. The results show that both deterministic optimization and reliability optimization can improve the crashworthiness of side-impact vehicles, and compared with the traditional deterministic optimization, although the reliability optimization makes a slight increase in quality, both intrusion and intrusion rates have Reduced and away from the confinement boundaries, their reliability are 0.957 and 0.963, respectively, to meet the reliability design requirements. Therefore, the reliability optimization results not only satisfy the crashworthiness requirements of the car door, but also significantly improve the reliability of the car door.