文档介绍：半挂车车架结构有限元分析摘要本文简爱介绍了可用于汽车结构分析的有限元法的熬本理论,阐述了汽车缝镌参数谯豫设计的骧理帮方法,建立了罐式拳接车蠢集装簇式半戆运输车车架的有限元计算模型,利用有限元软件一ANsYs进行了强度分析,并对罐式半攮车逶过瞧溺试验验涯了计算模黧窝诗冀结鬃黥爰确往;论文还掇出了半接车车架结构参数优化设计与拓扑优化设计的模型和方法,调用了ANSYS软{牛对葵进行了优纯设计,分辑了饶纯缭莱麴哥哥亍经,并给密了该半挂车车粲的结构改避方向。奉文的毳搿究魇提出的汽车终梅筏税设计的模羹和多变量分步饶纯方法对于汽车和专用车制造业进一步推广应用CAD/CAE技术、开展优化设计研究具肖一定瓣理论意义鞠实用价值l 关键谰: 半整汽车秀鞭元强菱分毫厅结鞠甓纯设诗 FINITE ELEMENT ANALYSIS FOR SEMI—TRAILER FRAME STRUCTURE ABSTRACT This paper briefly Introduces thebasically theory offiniteelement method which can be used foranalysis ofvehicles structure,describes theprinciples and methods ofdesign optimization for vehicles structure parameters,establishes the finite element models ofsemi-dragging trucks,which applies theANSYS software to analyze strength,then validity of thecalculation resultand models isdemonstrated by means ofnon—electric charge surveying the sanle time,the author puts forward themodel and methods ofoptimization design for structure parameters of vehicle frames,exploits the applied software of semi—dragging trucks,does optimization design,analyzes the feasibility of the optimization results,then gives the structure improve direction. This paper has presented themodels ofoptimization design forvehicle structure and methods ofbrunch optimization ofmulti—variables which have some theory significance and applicable value to put forward CAD/CAE technology and optimization design for vehicle and special vehicle. Keywords: Semi·dragging trucks Finiteelement Strength analysis Structure design optimization 合肥工业大学本论文经答辩委员会全体委员审查,确认符合合肥工业大学硕士学位论文质量要求。答辩委员会签名: 捕“键弩瓣’铼珈。孔曦委员:呷字豇撮肺∥矧欠赴浮嗜躲瓣州茛\ \ o节p 4 1y铲I 导师:钱立军副教授\ 插图清单图2~i 微鼙元嚣应力镤邻点应力之阉关系????????????s 图,2~2 物体内任一点的变形情况??????????????? 6 图2—3 物体内任一点变形情况投影???????????????6 图2—4 边努上微四面体受力情况????????????????9 强2~S 乎鬻获态交形锩受力清嚣??????????????? 10 图2~6 微单元体虚功示意图??????????????????11 图2—7(a) 激齿圆柱齿轮的有限元模型???????????????12 图2~7(b) 赢趱圆柱齿轮豹最大切应力等切应线???????????1 2 圈2—8 平黼剐粲帮它瓣诗算模型????????????????12 图2~9 薄板微矩形变形示意图????????????????? 19 图2—10 单元位移、节点力示