基于灵敏度分析的客车骨架优化分析研究  

Research on Optimization for Bus Body Based on Sensitivity Analysis

作　　者：魏允[1] 

机构地区：[1]河南工业职业技术学院网络管理中心,河南南阳473009

出　　处：《中州大学学报》2011年第3期122-125,共4页Journal of Zhongzhou University

摘　　要：客车的轻量优化对降低汽车油耗,提高运载量意义巨大。将灵敏度方法引入到轻量优化分析中,建立某全承载式客车车身有限元模型,确定有限元模型的边界条件和载荷,并对有限元模型进行电测试验验证。选取车架上刚度和强度相对富裕的梁作为灵敏度分析对象,根据分析结果选取设计变量,以车身最大应力和位移作为状态变量,以车身总质量为目标函数,从而实现了客车车身重量的优化。The FEM model of some domestically produced entire-bearing coach car-body frame has been established.The FEM model＇s boundary condition and load are discussed too.The model has been proved in good precision through the static and dynamic electrical measure ment experiment.Moreover,by identifying the design variable,state variable,and the objective function of the model,the parts＇sensitivity of body which are constitutive parts of body frame or chassis,are analyzed respectively.Choosing design variable due to the sensitivity analysis result,using the body＇s gross mass of the parts as the objective variable,and using the body＇s maximum stress and displacement as the state variable,the body＇s gross mass are optimized.

关 键 词：客车车身 有限元法 灵敏度 轻量优化 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]