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基于ANSYS有限元软件建立了大型液压装载机锻造摇臂的有限元模型,并对其结构进行最大载荷工况下的静力分析,得到了摇臂结构的位移、应力的分布情况。在静力分析的基础上,在既不改变摇臂结构安装尺寸、并又满足摇臂刚度和强度的前提下,采用拉丁超立方实验设计方法与二阶多项式响应面模型,并运用遗传算法进行迭代求解,对锻造摇臂结构进行降重优化设计。根据优化后的结构参数建立摇臂三维几何模型并进行最大载荷工况下的静力分析;静力分析结果表明,优化后摇臂结构的刚度和强度满足工作要求,并且实现减重约59.98 kg,节约了材料,降低了生产成本。
Based on the finite element software ANSYS, the finite element model of the forging rocker arm of a large hydraulic loader is established and the static analysis of the structure under the maximum load is carried out. The displacement and stress distribution of the rocker arm structure are obtained. Based on the static analysis, the Latin Hypercube experimental design method and the second-order polynomial response surface model are adopted without changing the installation size of the rocker arm and meeting the rigidity and strength of the rocker arm. The genetic algorithm Iterative solution, for forging rocker arm structure optimization design. According to the optimized structural parameters, the rocker three-dimensional geometric model is established and the static analysis is carried out under the maximum load. The static analysis results show that the optimized stiffness and strength of the rocker arm meet the working requirements and achieve a weight reduction of about 59.98 kg , Save the material, reduce the production cost.