摩托车座垫底板的有限元分析及形貌优化  

Finite Element Analysis and Topography Optimization of Motorcycle Cushion Plate

作　　者：刘嘉敏[1] 韩耀顺[1] 李连泽 王鹏[1] 刘亦哲[1] 

机构地区：[1]重庆大学光电技术及系统教育部重点实验室,重庆400044

出　　处：《机械科学与技术》2015年第2期296-300,共5页Mechanical Science and Technology for Aerospace Engineering

基　　金：重庆市自然科学基金项目(CSTC;2008BB0035)资助

摘　　要：建立摩托车座垫底板的有限元模型,对其进行静力学分析和模态分析。同时考虑到底板的静态多工况刚度问题和动态频率特性问题,采用线性加权方法将多目标问题转化为单目标问题,实现对底板结构多工况下的多目标形貌优化设计。优化后的底板获得了最优的加强筋布局,最大变形量减少52.2%,最大应力减少42.2%,一阶固有频率增加9.0%,静动态性能均得到显著的改善,达到了预期的优化效果。A finite element model of motorcycle cushion plate was built,and the static analysis and modal analysis were conducted. Considering the multiple conditions of static stiffness and the dynamic frequency characteristics of the plate,the multi-objective problem was converted to a single-objective problem by using linear weighted method,and the multiobjective topography optimization design of the plate subjected to multiple conditions is achieved. The optimized plate has the optimal layout with stiffeners,with a 52.2% reduction in maximum deformation,a 42.2% reduction in maximum stress and a 9.0% increase in the first natural frequency. Both the static and dynamic performances of the plate are significantly improved and the expected effect of optimization is achieved.

关 键 词：座垫底板 静力分析 模态分析 多目标优化 形貌优化 

分 类 号：U483[交通运输工程—载运工具运用工程]