发动机液压悬置支架的拓扑设计

Topological Design of Engine Hydraulic Suspension Bracket

为了满足发动机液压悬置支架轻量化的发展需求,以某品牌汽车发动机液压悬置支架为原型,建立悬置支架的三维模型,并使用ANSYS软件对悬置支架的结构进行拓扑优化设计,减轻了支架的质量,使其满足轻量化设计要求。对设计优化后的模型进行静力分析和模态分析,发现优化设计后的悬置支架在满足正常工况下的强度、刚度要求之外,还有较高的固有模态频率,能避免发动机与液压悬置支架发生共振。分析结果显示,在减少变形量和应力大小的同时,支架结构的整体质量由1.02kg减小到0.84kg,质量减小了17.6%,说明该发动机液压悬置支架的优化设计方案是可行的。

In order to meet the lightweight requirements of the engine hydraulic mount support, taking the engine hydraulic mount support of an automobile as the prototype, the three-dimensional model of the mount support is established, and the topology optimization design of the mount support structure is carried out by using ANSYS software, which reduces the quality of the support and makes it meet the lightweight design requirements. Through static analysis and modal analysis of the optimized model, it is found that in addition to meeting the strength and stiffness requirements under normal working conditions, the optimized mount has a higher natural modal frequency, which avoids the resonance phenomenon between the engine and the hydraulic mount. The analysis results show that while reducing the deformation and stress, the overall mass of the support structure is reduced from 1. 02kg to 0. 84kg, and the mass is reduced by 17. 6%, indicating that the optimal design scheme of the engine hydraulic mount is feasible.