【摘要】 为获得某款防滑差速器壳体在实际工况中的具体力学特性,基于有限元分析法对某四驱汽车防滑差速器壳体进行设计分析。首先,在Abaqus软件中建立防滑差速器壳体的有限元分析模型。接着,利用Romax软件进行防滑差速器壳体在两种极限工况下的轴承受力分析,同时设立更为精确的边界条件和载荷,从而进行应力、应变和疲劳分析。分析结果表明该防滑差速器壳体在极限工况下位移量较大,需要进行优化设计。结合静力学分析结果,以壳体加强筋的长度和厚度为优化变量,对防滑差速器壳体进行优化设计,通过优化前后对比分析,发现优化后壳体在各种工况下的应力和应变均显著降低,符合设计要求。采用软件仿真进行轴承受力分析有效地避免了繁琐的理论计算,同时使得分析方法更加简单,分析结果更贴合实际。另外,有限元分析方法也大幅缩短了防滑差速器壳体的研发周期与设计成本。更多还原

【Abstract】 In order to obtain the specific mechanical characteristics of an anti-slip differential shell in actual working conditions, a design method based on finite element analysis for limited slip differential shell is proposed. Firstly, the finite element analysis model of limited slip differential shell is established by Abaqus software. Secondly, the force rolled in anti-slip differential case′s bearing in different working conditions are analyzed with more accurate boundary conditions and loads by using the Romax software. Then the analysis of stress, strain and fatigue are simulated. The analysis result shows that the displacement of the anti-slip differential shell is larger under extreme working conditions, which needs to be optimized. Based on the results of static analysis and taking the length and thickness of stiffeners as optimization variables, the anti-slip differential shell is optimized. By comparing the results before and after the optimization, it is found that the stress and strain of the shell under various working conditions are significantly reduced after the optimization, which meets the design requirements. The method which carries on the bearing force analysis through software simulation can effectively avoid the tedious theoretical calculation, and make the analysis method simpler and the analysis results more practical. In addition, the finite element analysis method has greatly shortened the research and development cycle and design cost of the anti-slip differential shell.更多还原