某排水车举升滑动机构轻量化设计

Lightweight Design of a Drainage Car Lifting Sliding Mechanism

为实现排水车轻量化设计,提高燃油经济性,针对某排水车举升滑动机构,采用Hypermesh软件建立其有限元模型.基于刚强度分析Opti Struct模块,分析排水车举升滑动机构在极限工况下的结构强度和刚度,采用拓扑优化方法对主滑动机构进行横梁结构优化,找到最佳横梁位置分布,进而采用尺寸优化方法对主滑动机构和副滑动机构进行厚度优化.结果表明,优化后的举升滑动机构能够满足强度和刚度要求,优化后的机构质量减轻15.6%.

To achieve lightweight structure and improve fuel economy of a drainage car, a finite element model of its lift sliding system was established using Hypermesh and strength and stiffness of the system under extreme conditions analyzed based on OptiStruct. Topology optimization of beam cross section in the main lift sliding system was made followed by size optimization of thickness of the main and deputy lift sliding bodies. The result shows that the optimized lift sliding system meets the requirement of strength and stiffness with weight reduced by 15.6%.