基于ansys对车桥桥壳的有限元分析(原创论文).doc

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基于ansys对车桥桥壳的有限元分析(原创论文),摘要作为汽车的主要承载件和传力件,驱动桥桥壳支撑着汽车的荷重,并将载荷传给车轮。作用在驱动车轮上的牵引力、制动力和侧向力,也是经过桥壳传到悬挂及车架或者车厢上。根据经验和理论研究,引起桥壳破坏的主要原因是作用在桥壳上的、由路面不平度引起的冲击力和各种复杂工况下的作用力。 由于汽车的行驶工况比较复杂,驱动桥桥壳的强度和动...
编号:20-146712大小:1.07M
分类: 论文>机械工业论文

内容介绍

此文档由会员 cheliangren 发布

摘要



作为汽车的主要承载件和传力件,驱动桥桥壳支撑着汽车的荷重,并将载荷传给车轮。作用在驱动车轮上的牵引力、制动力和侧向力,也是经过桥壳传到悬挂及车架或者车厢上。根据经验和理论研究,引起桥壳破坏的主要原因是作用在桥壳上的、由路面不平度引起的冲击力和各种复杂工况下的作用力。



    由于汽车的行驶工况比较复杂,驱动桥桥壳的强度和动态性能直接影响汽车运行安全,合理地设计桥壳也是提高汽车平顺性和舒适性的重要措施之一。因此,必须对桥壳强度、刚度和动态特性进行力学分析。



    本文以有限元法动态分析理论为基础,将CAD软件Pro/E和有限元分析软件结合起来完成了从驱动桥三维建模到有限元分析的整个过程,得出了他在自由约束状态的前16阶固有频率和振型,证明该桥壳在在各种行驶工况下不会引起共振。



关键词:驱动桥桥壳;ANSYS;模态分析





 





 





 





 





 





 





 





 





 





 





 









Abstract



    As the mainly load-bearing and force-transmitting component of the vehicle, the automotive drive axle housing bears the weight of vehicle and transfers the force to the wheel. By the drive axle housing, the traction force, braking force and lateral force acted on the wheel are transferred to the suspension system, frame or carriage. According to the experience and the vibration theory, the crash of the axle housing is induced by the pulse of the road surface roughness and the complex forces from the different hard work condition.



Because the driving condition of the vehicle is very complex, the strength and dynamic performance of the drive axle housing affect the operation safety of the vehicle. The reasonable design of the drive housing is one of the importance ways to improve the ride comfort.  Thus, it is necessary to analyze the strength,  rigidity  and  dynamic performance of the drive axle housing.



    Based on dynamic theory of the finite element method, the 3D model of the drive axle housing is established in the Pro/E. on the basis of this model, the FEA is simulated in computer under the circumstance of ANSYS to get the results of stress distribution, deformation and the first sixteen natural frequency and vibration shape under the free constraint. The results shows the axle housing meets the strength demand, it is reliable under all kinds of driving conditions and can't cause resonance of the housing, then based on the FEA, to optimize the housing by use of ANSYS.



Keywords:drive axle housing;ANSYS;model





 





 





 





 





 





 









目录



内容摘要………………………………………………………………………………………



ABSTRACT………………………………………………………………………………………



1  绪论…………………………………………………………………………………………



1.1  引言…………………………………………………………………………………



1.2  研究背景………………………………………………………………………………



1.3  国内外研究现状……………………………………………………………………



1.4  选题的目的和意义……………………………………………………………………



1.5  课题的提出和研究内容………………………………………………………………



2  有限元法理论………………………………………………………………………………



2.1  有限元法的概述………………………………………………………………………



2.1.1  有限元法的发展概况…………………………………………………………



2.1.2  有限元法基本思想及分析过程………………………………………………



2.1.3  有限元法分析特点和流程……………………………………………………



2.2  有限元法的应用………………………………………………………………………



2.2.1  有限元法在汽车设计中的应用………………………………………………



2.2.2  有限元法在驱动桥设计中的应用……………………………………………



3  汽车驱动桥的相关介绍与桥壳的受力典型工况…………………………………



3.1  汽车驱动桥的相关介绍………………………………………………………………



3.2  桥壳受力分析…………………………………………………………………………



3.2.1  桥壳的静弯曲应力计算………………………………………………………



3.2.2  在不平路面冲击载荷作用下的桥壳受力分析………………………………

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