履带式下舱起重机吊臂的优化设计研究

发布时间：2018-01-10 01:10

本文关键词：履带式下舱起重机吊臂的优化设计研究　出处：《天津大学》2012年硕士论文　论文类型：学位论文

【摘要】：近年来,随着我国港口的建设和发展,件杂货码头的装卸能力得到不断提升。履带式下舱起重机作为件杂货码头的专用下舱设备,其性能和结构也要求适应港口发展的需要。吊臂作为履带式下舱起重机的关键部件,其设计的好坏是决定整机性能和成本的关键因素。吊臂除了要具备足够的强度和刚度,还要足够轻巧。而通过优化设计来减轻吊臂的自重则是提高其经济性,节约成本的主要方法。本文以HC300D履带式下舱起重机的吊臂作为研究对象,在论述了优化设计理论和有限元方法的基础上,对履带式下舱起重机的吊臂进行结构分析,基于ANSYS有限元分析软件建立了吊臂的有限元模型,并对其进行结构静力分析和模态分析,获得了危险工况下吊臂的应力分布和变形分布,分析结果表明吊臂满足强度和刚度的设计要求。接着选取吊臂截面的宽度和高度两个尺寸为设计变量,以满足吊臂的强度和刚度为约束条件,吊臂的体积最小为目标函数,运用ANSYS的二次开发语言APDL完成了吊臂的参数化建模,对吊臂的截面尺寸进行了优化。通过对优化结果进行强度和刚度校核验证了优化结果的合理性。本文的研究工作实现了履带式下舱起重机吊臂的有限元分析及优化设计,优化后的吊臂自重更轻,结构更加合理,为设计人员改进和优化吊臂的结构提供了依据。
[Abstract]:In recent years, with the construction and development of the port in China, the loading and unloading capacity of the cargo terminal has been continuously improved. Its performance and structure also need to meet the needs of port development. The design quality is the key factor to determine the performance and cost of the whole machine. In addition to having enough strength and stiffness, the boom is also light enough. The optimization design to reduce the weight of the boom is to improve its economy. The main method of cost saving. This paper takes the boom of HC300D crawler lower cabin crane as the research object, on the basis of discussing the optimization design theory and finite element method, the structure analysis of the crane jib is carried out. Based on the finite element analysis software ANSYS, the finite element model of the boom is established, and the structural static analysis and modal analysis are carried out. The stress distribution and deformation distribution of the boom under dangerous working conditions are obtained. The analysis results show that the boom meets the design requirements of strength and stiffness. Then the width and height of the arm section are selected as the design variables to meet the strength and stiffness of the boom as constraints. The minimum volume of the boom is the objective function, and the parametric modeling of the boom is completed by using the secondary development language APDL of ANSYS. The section size of the boom is optimized and the rationality of the optimized result is verified by checking the strength and stiffness of the optimized results. The research work of this paper has realized the finite element analysis and the optimization design of the crawler crane boom, the optimized jib weight is lighter, the structure is more reasonable. It provides a basis for designers to improve and optimize the structure of the boom.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH213.7

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