55吨汽车起重机伸缩臂截面的结构分析

发布时间：2018-01-10 10:12

本文关键词：55吨汽车起重机伸缩臂截面的结构分析　出处：《大连理工大学》2015年硕士论文　论文类型：学位论文

【摘要】：由于计算机技术的快速发展,为工程制造业带来了新的契机,其中有限元方法也得到了快速的发展,如今工程制造业越来越广泛的应用现代化设计与制造技术。我们可以通过有限元分析技术轻松地实现结构的静力仿真、模态仿真以及屈曲仿真等等,这些都是在有限元分析技术诞生以前没有办法做到的工作。作为工程机械的一个重要分支,汽车起重机生产制造也不断整合现有的资源,采用最新的技术进行创新性设计,借助此举来提高企业的生产能力、以此增加市场竞争力,并最终达到提高市场占有率的作用。汽车起重机的伸缩臂作为汽车起重机的主要受力部件,它的结构性能的优劣不仅仅影响了汽车起重机操作的安全性以及可靠性,还进一步决定了汽车起重机的整机经济性能,简单的说,在能够达到安全使用的前提下,伸缩臂自重当然是希望设计的越小越好,因为这样的话首先可以节省原材料,降低采购成本,同时自重小还能提高整机的机械性能,,可谓一举多得。但是,一定要在满足使用安全性的前提下,避免由于伸缩臂壁厚过薄导致汽车起重机失稳的情况发生。本文主要利用ANSYS有限元的方法对55吨汽车起重机的伸缩臂的结构进行分析研究,对比分析U形截面与椭圆形截面在相同条件下的受力情况。利用ANSYS有限元分析软件,完成伸缩臂参数化建模,对伸缩臂椭圆形截面与U形截面进行静力分析与屈曲仿真,并对比分析结果,从而选出两种截面中最为适用的截面形式。截面选定后,在此基础上进行汽车起重机五节臂的设计与计算工作。
[Abstract]:Due to the rapid development of computer technology, the engineering manufacturing industry has brought new opportunities, in which the finite element method has been rapid development, now the engineering manufacturing industry more and more extensive application of modern design and manufacturing technology. We can easily achieve the static simulation structure by finite element analysis, modal and buckling simulation etc. all of these, there is no way to do it before the birth of the finite element analysis technology. As an important branch of engineering machinery, automobile crane manufacturing has been the integration of existing resources, adopt innovative design with the latest technology, with the move to improve the production capacity of enterprises, in order to increase the market competitiveness, and ultimately to improve the market share. The telescopic boom of truck crane as the main stress components of automobile crane structure, its performance will not Only affects the automobile crane operation safety and reliability, but also determines the overall economic performance of the automobile crane, simply, in can be used safely, the telescopic arm is of course to design the weight of the smaller the better, because then the first can save raw materials, reduce procurement costs, at the same time weight small can improve the mechanical properties of the machine, it Yijuduode. However, must be in the premise of meeting safety, avoid the telescopic wall thickness is too thin to crane instability happens. Analyze the structure of this paper using the ANSYS finite element method for telescopic arm 55 ton truck crane the comparative analysis of the force under the same conditions of U shaped and elliptical section. Using ANSYS finite element analysis software, telescopic boom parametric modeling of elliptical telescopic arm The static analysis and buckling simulation of the circular section and the U section are carried out, and the results are compared and analyzed. The most suitable section form of the two sections is selected. After the section is selected, the design and calculation of the five boom of the truck crane is carried out on this basis.

【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TH213.6

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