中型卡车驱动桥壳设计及有限元分析说明书.doc

PAGE II PAGE I 中型卡车驱动桥壳设计及有限元分析 摘 要 本课题的研究内容是对中型卡车的驱动桥壳进行设计校核并运用软件对驱动桥壳进行有限元分析。中型卡车广泛作为载货汽车使用，在日常生活中处处可见，而驱动桥壳作为汽车结构一个重要的部件，负责支承汽车重量，容易发生危险面应力过大和扭转变形等故障，从而影响汽车的功能和使用时间，所以驱动桥壳的设计在车辆行业的设计要求中是很关键的一步。通过对驱动桥壳的设计校核，可以有效改善汽车的性能指标，并且可以进一步提升汽车的使用寿命。 本设计依据参考文献，以机械设计与汽车设计理论为基础，将软件和有限元分析软件交互运用，完成了如下工作任务：首先，决定了驱动桥的总体设计方案，为接下来桥壳设计提供各项参数；其次对驱动桥壳进行设计并对其在多工况下进行受力和强度校核，确定设计的桥壳是否符合标准；然后应用三维设计软件对桥壳进行简化并建立几何模型，将几何模型导入到有限元分析软件10.0中生成最终的分析模型；最后运用软件对最终的模型进行分析计算，求出桥壳在多工况下的应力和变形结果，并作出桥壳应力图和位移图，同时对桥壳进行模态分析，验证设计结果是否符合标准。 关键词： ANSYS；驱动桥壳；有限元分析；模态分析 ABSTRACT The design of the medium-sized truck drive axle housing design and finite element analysis. Medium-sized trucks are widely used as trucks, which can be seen everywhere in daily life. Driven axle is an significant part of automobile composition. It is responsible for supporting the weight of automobile, prone to excessive stress and torsional deformation. And the service life, so the design of the axle housing is a key step in car design. By optimizing the design of the drive axle housing, the axle housing can provide good and stiffness, thus effectively improving the performance of the car, and can improve the service life of the car. This design is based on the reference to the mechanical design and automotive design theory, based on software and finite element analysis combined to complete the following design tasks: Firstly, the overall program of the driving axle is determined, and the parameters are provided for the next axle housing design. Secondly, the driving axle housing is designed and its force and strength are checked under multiple operating conditions to determine whether the designed axle housing conforms And then use the three-dimensional design software to simplify the bridge shell and establish the geometric model, the geometric model into the finite element analysis software 10.0 to generate the final analysis model; Finally, the software used to analyze the final model, Stress and deformation results under mul