前桥设计汇编.doc

摘 要 Abstract Generally used truck rear-wheel drive Front-engine layout of the form, they turn to the driven front axle for the bridge, through the suspension and chassis axle connected at both ends of the installation of its wheels, its purpose is to transmit the frame with the car between the direction of rotation of the force and torque. The graduation project is the subject of a commercial vehicle before the bridge structure design and strength analysis, for this subject, I first of all, reference books, which I can fully understand that the specific structure of Maebashi, Maebashi mainly by Steering kingpin, steering knuckle, Pre-beam front axle. At the same time, by calculating the strength of the material can be analyzed to select the qualified parts, and then the application of ANSYS software to carry out pre-bridge model generation, in the modeling process of the method of direct modeling, and finally the application of ANSYS software before the first beam to impose constraints, imposed load and then, finally, the previous finite element analysis of beams， Analysis before the beam can be sought to such effect. Key word: Maebashi；Pre-beam front axle；Steering Knuckle；Steering kingpin；目 录----------------------------------------------12 3.1.2.2主销内倾角---------------------------------------------12 3.1.2.3车轮外倾角---------------------------------------------12 3.1.2.4前束-----------------------------------------------------12 3.2前桥设计计算-----------------------------------------------------13 3.2.1从动桥主要零部件尺寸确定-------------------------------------13 3.2.2前桥强度计算-------------------------------------------------14 3.3主销强度计算-----------------------------------------------------20 3.4转向节在制动和侧滑工况下的强度计算-------------------------------22 4 ANSYS实体建模------------------------------------------------------24 4.1结构分析--------------------------------------------------------24 4.2建立文件及创建实体模型准备--------------------------------------24 4.3单元属性选取------------------------------------------------