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针对传统设计方法进行装载机动臂结构设计过程中动臂结构冗余度过大的问题,以ZL20型轮式装载机的偏载铲装作业作为极限工况,在利用静力学方法确定动臂外力及边界条件的基础上,采用拓扑优化技术,借助HyperWorks软件的有限元计算及结构拓扑优化模块对装载机的动臂进行轻量化改进。经过计算得出了原始动臂结构存在较大减重优化空间的结论,并在保持原始结构刚度与强度的条件下,得到了一个新型轻质结构,结构减重20%。
In view of the problem of excessive redundancy of the boom structure in the design of the loader boom structure in the traditional design method, the partial load shovel operation of the ZL20 wheel loader is taken as the limit working condition, and the static force is used to determine the boom external force Based on the topology optimization and topology optimization, the boom of the loader is reduced with the help of finite element method and topology optimization module of HyperWorks software. After calculation, the conclusion is drawn that the original boom structure has a larger space for optimization of weight loss, and a new lightweight structure is obtained under the condition of maintaining the rigidity and strength of the original structure. The weight of the structure is reduced by 20%.