基于拓扑优化方法重载变速箱体轻量化设计

发布时间：2018-01-12 09:07

本文关键词：基于拓扑优化方法重载变速箱体轻量化设计　出处：《组合机床与自动化加工技术》2017年11期 　论文类型：期刊论文

【摘要】：传统变速箱箱体生产遵循保守原则,质量分配不均,自身重量过大。为获得结构合理,质量低的变速箱箱体,以某装载机变速箱箱体为研究对象,采用理论分析计算与仿真相结合的方式对变速箱箱体进行了静力学分析,获得了箱体在最大载荷工况下应力及变形;运用Ansys Workbench软件对箱体进行了模态分析,获得了箱体前10阶的固有频率及振型。基于分析结果采用变密度法,对箱体进行以体积最小为优化目标,以形变和应力为约束条件的结构拓扑优化,在此基础上根据优化后的云图对其进行相对应结构设计。优化后变速箱箱体质量减少11.68%,最大变形量降低20.2%。分析结果表明,优化后的变速箱箱体综合性能得到提高,实现了轻量化设计和提高可靠性的双重目的。
[Abstract]:The production of the traditional gearbox box follows the conservative principle, the mass distribution is uneven, and its weight is too large. In order to obtain the gearbox box body with reasonable structure and low quality, a certain loader gearbox box body is taken as the research object. The static analysis of the gearbox box is carried out by the combination of theoretical analysis and simulation, and the stress and deformation of the box body under the maximum load are obtained. The modal analysis of the box is carried out by using Ansys Workbench software. The first 10 natural frequencies and modes of the box are obtained. Based on the analysis results, the variable density method is used. The structure topology optimization is carried out with the minimum volume as the optimization objective and the deformation and stress as the constraint conditions. On this basis, the corresponding structure is designed according to the optimized cloud map. After optimization, the mass of the gearbox box is reduced by 11.68 and the maximum deformation is reduced by 20.2. the analysis results show that. After optimization, the comprehensive performance of the gearbox is improved, and the double purpose of lightweight design and reliability improvement is realized.
【作者单位】：山东大学机械工程学院;山东大学建材与建设机械研究中心;山东大学高效洁净机械制造教育部重点实验室;山东大学鹰轮工程技术中心;
【基金】：山东省重点研发计划(2015GGX103009) 山东省自主创新及成果转化专项(2014CGZH0802)
【分类号】：TH132.46
【正文快照】： 0引言变速箱箱体是变速箱的重要零件之一,属于典型的复杂薄壁结构,其包容并支撑箱体内各种传动零部件,从而保证各零部件之间的相对运动和精度[1]。装载机变速箱工作环境恶劣复杂,低速重载工况下,箱体承受较大冲击载荷,因此在该变速箱结构设计时须满足其足够的强度和刚度。由于

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