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针对液压机机身刚强度不足和偏重问题,运用基于传力路径的结构优化方法,对其进行改进。首先根据压机三维模型建立其有限元模型,进行静态刚强度分析,确定了机身结构中的薄弱环节,然后运用拓扑优化方法,获得了机身的最佳材料分布和结构概念方案,最后运用尺寸优化方法对机身进行详细设计,获得优化的机身结构。结果显示,优化的机身在满载工况下最大位移减小36%,喉口处最大应力减小38.1%,同时本体结构质量减小了12.67%,提高了压机性能,节约了材料,达到了液压机机身结构优化的设计目标。
Aiming at the problem of insufficient rigidity and emphasis on the rigid body of the hydraulic press, the structure optimization method based on the force transmission path is used to improve it. First of all, according to the 3D model of the press, the finite element model was established, and the static stiffness strength was analyzed to determine the weak links in the fuselage structure. Then, the topology optimization method was used to obtain the best material distribution and conceptual concept of the fuselage. Finally, Dimension optimization method for detailed design of the fuselage, access to optimize the fuselage structure. The results show that the maximum displacement of the optimized fuselage is reduced by 36% at full load and the maximum stress at the throat is reduced by 38.1%, while the mass of the body structure is reduced by 12.67%, the performance of the press is improved, the material is saved, The hydraulic machine fuselage structure optimization design goals.