【毕业设计】27m³矿用挖掘机斗杆结构有限元分析.doc

本科生毕业设计（论文） 中文题目：27m3矿用挖掘机斗杆结构有限元分析 英文题目：The Finite Element Analysis of the Dipper Handle of the 27 m3 Mining Shovel 摘 要 挖掘机结构非常复杂，往往是多发动机同时驱动，其工作环境恶劣，外载荷随机性变化，因此在设计大型矿用挖掘机时，为了使其能够作业安全，工作顺畅，除必要的理论分析和静强度计算外，还必须要进行动力学分析和有限元分析，以保证在设计之初机械的动强度及可靠性。 介绍了国内外挖掘机的发展状况，以及本课题研究的意义及内容。本文是对挖掘机进行静力学及有限元分析，适应我国矿用挖掘机发展的需要，充分利用前人的研究成果和已有的实验数据，在PH-2300的基础上对斗容为27 的大型矿用挖掘机的斗杆进行分析。对机械式单斗挖掘机的结构进行了介绍，并斗杆的结构进行了分析，根据经验公式确定了斗杆的结构尺寸。简单介绍斗杆模型的建立过程以及所用软件的发展过程及应用特点，然后将UG中建立的斗杆的模型导入ANSYS中。文章结尾介绍了有限元分析软件在静力分析的应用，针对挖掘机斗杆在不同工况下的受力，应用静力分析模块对斗杆的简化模型受力情况进行了分析，得到其应力变化情况，并得到最大单元的位置。我们以后要做的工作是建立起有限元的有效性评估机制，结合实体模型仿真实验数据，分析误差产生的原因，研究出一个更有效更快捷的分析体制。 关键词：斗杆 有限元分析 UG ANSYS ABSTRACT The construct of excavator is very complex and the multiple movers often work simultaneously. At the same time its working environment is very bad and the eternal load varies randomly. As a result, when designing the new product of excavator, in order to ensure the performance safety, the designer not only has the basic theory analysis on static load computing, but also do necessary work about the kinetics of mechanism to qualify the dynamic reliability in the period of designing. The first novel is devoted to write the development of domestic and theforeign excavators, As well as the study of the subject content and significance.To meet ou- rs development requires, this paper make dynamics simulation and finite element a- nalysis of mining excavator equipment which capacity is 27 m3. It introduced the s- tructure of the mechanical shovels, and analyzed the structure of its working equeq- uipment. According to the empirical formula to determine of the equipment structu- re size, and the various components size.Then briefly introduced the process of esta blishment of the working equipment, and evelopment of the used software also inc- luding its applicational charactistic , then lead the model of working equipment est- ablished in the UG to ANSYS.then introduced the software ANSYS in the static a