差速器壳三维造型及有限元分析.doc.doc

汽车差速器壳的三维造型及有限元分析 摘要：差速器壳设计是汽车设计中最重要、承载最复杂的运动件之一，对差速器壳的强度分析一直受到设计者的重视。由于差速器壳的几何形状、边界条件和作用载荷都非常复杂，按照传统的方法进行试验研究难度较大，这就要求我们采用新的研究方法来研究和分析差速器壳。 本文通过运用PROE绘图软件，绘制差速器壳三维实体模型，然后运用ANSYS分析软件对差速器壳进行强度分析，通过对差速器壳模型进行网格划分、差速器壳负载及边界条件的设定，计算求解得出差速器壳应变分布图及应力分布图，从而找出差速器壳易破坏部位，寻找到提高差速器壳强度的措施。设计差速器壳时，取用较大的过渡圆角，以提高其疲劳强度。 关键词：差速器壳，强度， PROE，ANSYS Abstract The differential case is one of the most important motion parts, which bears the most complex load, and continuously the differential case intensity analysis is valued by the designers. It is much too difficult to carry on the experimental study by the traditional method for the geometry shape of differential case, boundary condition and extremely complicated function load, so a new research technique to study and analyze differential case is requested to use. PROE cartography software is utilized in this thesis to protract semiaxix three dimensional full-scale mockups, then the intensity analysis for the differential case by using ANSYS analysis software is carried on. The differential case strain distribution map and the stress distribution map are obtained through carrying on the grid division, the differential case load and the boundary condition hypothesis to the differential case model, thus the exposed destructive position in the differential case can be discovered, and some ways are seeked to enhance the differential case intensity. When designing the differential case, the bigger transition fillet can be used to enhance the anti-fatigue strength. Key word: differential case , Intensity, ,PROE，ANSYS 目 录 TOC \o \t 标题 3,3,标题 4,4 1 引 言 1 1.1课题的背景 1 1.2差速器壳的研究现状 1 1.3 课题的主要研究内容及意义 1 TOC \o 1-4 2 差速器壳的三维实体建模 2 2.1 Pro/ENGINEER 概述 2 2.1.1 Pro/ENGINEER系统简介 4 2.1.2 Pro/ENGINEER系统特点 4 2.1.3 Pro/ENGINEER的应用现状 4 2.2 Pro/ENGINEER的工作环境和系统设置 4 2.2.1 硬件要求 5 2.2.2 操作系统设置 5 2.2.3 基本功能 7 2.3 差速器壳三维实体建模过程 9 TOC \o 1-4 3 差速器壳强度的有限元分析 23 3.1 ANSYS 概述 23 3.1.1 ANSYS简介 23 3.1.2 ANSYS的主要功能和技术特点 24 3.1.3 ANSYS的系统要求 24 3.1.4 A