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以DOE方法对国内某新型特种挂车车架进行轻量化设计,针对此挂车特殊的行驶工况,在Hyperworks中对车架进行强度与模态分析。对特种连挂牵引工况应力不满足要求的现象利用试验设计分析车架各部分板厚对车架性能的影响,选择影响较大的板厚作为设计变量,通过哈默斯雷样本试验建立较高精度的响应面近似模型,以最小化质量为目标,各行驶工况许用应力为约束,基于自适应响应面优化算法对车架进行轻量化设计,最终减重0.27%,具有较好的轻量化效果。
DOE method is used to design a lightweight frame for a new type of special trailer in China. According to the special driving conditions of this trailer, the strength and modal analysis of the frame are carried out in Hyperworks. The phenomenon of stress that does not meet the requirements of the special traction with traction system is used to analyze the influence of the thickness of each part of the frame on the performance of the frame by using the experimental design. The plate thickness with larger influence is selected as the design variable. Through the Hammersley sample test, High-precision response surface approximation model, with the goal of minimizing the mass, the allowable stress of each driving condition is constrained, and the light weight design of the frame based on the adaptive response surface optimization algorithm, the final weight loss of 0.27%, has a good Lightweight effect.