文档介绍：Ξ收稿日期:2006 - 03 - 23 作者简介:韩同群(1967 - ),男,硕士,副教授,主要从事汽车设计与 CAE技术研究. 【车辆工程】基于 HyperWorks的重型自卸汽车车架有限元分析和改进设计Ξ韩同群(湖北汽车工业学院,湖北十堰 442002 ) 摘要:建立了某重型自卸汽车车架有限元模型,利用工程分析软件 HyperWorks计算出其固有频率、振型及弯曲和扭转刚度;针对该车架第四横梁附近纵梁断裂问题,对多种改进方案进行了精细有限元计算分析并确定了改进方案. 关键词:有限元法;自卸汽车;车架;改进设计中图分类号: TH132 文献标识码:A 文章编号:1671 - 0924 (2006 )08 - 0021 - 04 Finite Element Analysis on Heavy- duty Dump Truck Frame Based on HyperWorks Soft ware and Its Improving Design HAN Tong- qun (Hubei Institute Automotive Industrial , Shiyan 442002 ,China ) Abstract :In this paper , a finite element model of a heavy- duty dump truck frame is established using Hy2 perWorks 7. 0 software. The natural frequencies and corresponding modal shapes as well as the bending and torsional stiffness are calculated. Aiming at the problem of crack on the longitudinal member around its fourth cross rail , several improving schemes are precisely analyzed using finite element method. Finally the improving design is determined. Key words :finite element method ; dump truck ; vehicle frame ; improving design. 0 引言 车架的结构和所承受的载荷十分复杂,概括起来,主要包括纵向弯曲、扭转、横向弯曲、水平菱形扭转以及它们的组合[1],,应首先根据车架结构,建立实体模型;然后对实体模型进行网格划分,建立车架的有限元计算模型,确定载荷和约束条件; 计算车架的刚度、强度、振动模态等关键性能指标;分析计算结果,将其与设计要求对比,确定是否符合要求;最后将方案进行对比并确定最终设计方案. ALTAIR公司 HyperWorks7. 0是一款功能强大的有限元分析软件,在进行有限元分析的同时,能对结构进行优化. 首先利用 Pro/ Engineer软件对车架进行了三维实体参数化建模,并将模型导入 HyperWorks软件