《微型汽车驱动桥静力学分析》-毕业论文设计（学术).doc

PAGE 摘 要 针对某微型汽车驱动桥样件在进行强捡时出现桥壳断裂的现象，以有限元的基本理论为依据，利用面向特征建模方法，建立了该驱动桥三维几何模型和有限元分析模型。根据解算结果，该车桥在桥壳局部出现明显应力集中区域；通过改变桥壳局部结构和受力，局部应力明显降低；将改进后样件进行实际装车试验，来出现桥壳断裂现象。 本文针对驱动桥壳进行有限元分析与研究。本文的主要内容如下： 1、简单介绍PRO/E及ANSYS软件； 2、运用PRO/E软件建立车桥三维模型； 3、用ANSYS软件生成车桥结构的有限元模型：包括车桥PRO/E模型导入ANSYS软件，单元类型的选取，单元属性和材料属性的定义，车桥有限元网格的划分；进行静力学分析。为有限元分析提供实践依据，并验证了有限元模型的准确性。 关键词： 有限元分析，汽车驱动桥壳，稳态分析，ANSYS ABSTRACT For a sample mini-cars drive axle when the bridge during strong pick up the phenomenon of broken shells, the basic theory of finite elements based on use of feature-oriented modeling method, a three-dimensional geometric model of the drive axle and finite element analysis model . According to the results of calculating the axle in the axle housing significant local stress concentration region; by changing the axle housing and force the local structure, significantly reduced the local stress; the improved actual loading test sample to axle breakage occurs . Aiming at a driving axle housing finite element analysis. The main content of this article is as follows: (1) to introduce PRO/E and ANSYS; (2) to use PRO/E software is built of 3D mode of driving axle l; (3) to set up finite element model of driving axle generated by ANSYS: including frame model PRO/E, import ANSYS software, the selection of frame element types, define unit attributes and material ,the division of the finite element grid; making transient response analysis. KEY WORDS: Finite element analysis，Automobile driving axle housing, Steady-State Analysis, ANSYS 目 录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc295824952 摘 要 PAGEREF _Toc295824952 \h I HYPERLINK \l _Toc295824953 ABSTRACT PAGEREF _Toc295824953 \h 1 HYPERLINK \l _Toc295824954 第一章 概 述 PAGEREF _Toc295824954 \h 1 HYPERLINK \l _Toc295824955 1.1课题的目的和意义 PAGEREF _Toc295824955 \h 1 HYPERLINK \l _Toc295824956 1.2 国内外研究现状 PAGEREF _Toc295824956 \h 2 HYPERLINK \l _Toc295824957 1.2.1国外研究现状 PAGEREF _Toc295824957 \h 2 HYPERLINK \l _Toc295824958 1.2.2国内研究现状 PAGEREF _Toc