公交车钢板吊耳座的拓扑优化设计

针对公交车钢板吊耳座的轻量化设计问题,基于HyperWorks进行了拓扑优化设计。以钢板吊耳座零件的单元密度为变量,以最大应力为约束条件,以体积分数最小为目标函数,建立了拓扑优化模型。利用HyperMesh进行了网格划分,通过OptiStruct模块获得了优化计算结果。结合企业加工工艺要求,修改优化计算结果,实现了钢板吊耳座的轻量化设计。拓扑优化设计后总质量比原设计方案减轻了25.71%。安全计算的结果验证了拓扑优化设计结果的可行性。

Topology Optimization Design of the Bus Lug Steel Housing

Aimed at the lightweight design problem of the bus lug steel housing, the topological optimization design base on hyper works is implemented in this paper. In the topological optimization model of the bus lug steel housing building in this paper, element density is treated as design variables, the maximum stress is treated as constraint condition, the minimum volume fraction is treated as objective function. We complete the work of meshing for the model by using Hyper Mesh. The optimized result can be obtained after the calculation by OptiStruct. After modifying the optimization calculation results, we achieve the goal of lightweight design of the bus lug steel housing combining the requirement of enterprise process. After the topology optimization design, the total mass of bus lug steel housing reduces by 25.71%compared with the original model. The feasibility of topology optimization design results can be verified by safety calculation.