高空作业平台工作机构参数化建模与优化设计

发布时间：2018-01-09 23:24

本文关键词：高空作业平台工作机构参数化建模与优化设计　出处：《南京林业大学》2011年硕士论文　论文类型：学位论文

更多相关文章： 高空作业平台 有限元分析 ADAMS 优化

【摘要】：随着城市化进程的加快,城市电力、建筑、装饰物等各种养护作业已经提到工作日程上来,造船业、城市林业、建筑业等各行业对高空作业装备的需求越来越大、要求也越来越高。高空作业平台作为一种系列化的工程机械设备,广泛应用于船舶、建筑、市政建设、消防、港口货运等行业。本文针对某企业的GTZZ21型高空作业平台,应用CAD建模技术、有限元分析技术和虚拟样机技术,对平台工作机构进行参数化建模与优化设计,提出了一些得到企业认可的结构改进建议。本文研究的主要内容如下： (1)依据虚拟样机的现代设计理念与技术路线,建立起高空作业平台工作机构的动力学分析模型； (2)利用有限元分析软件ANSYS对伸缩臂进行有限元分析；有限元分析方法与优化方法相结合,完成结构参数优化设计任务； (3)设计实验方案,采集物理样机的基本动力学数据,以验证高空作业平台工作机构的动力学模型的正确性和合理性； (4)以不同的目标函数建立变幅油缸铰点的优化数学模型； (5)改变结构参数进行工作机构的优化设计,通过对动力学仿真软件ADAMS输出的性能指标以及有限元分析的结果进行比较,从中找出对于在满足起升力矩的情况下变幅油缸受力最小和伸缩臂的危险截面受力最小的结构参数最佳组合,得出最终的优化结果。
[Abstract]:With the acceleration of urbanization, urban electric power, buildings, ornaments and other maintenance operations have been mentioned in the work schedule, shipbuilding, urban forestry. As a series of construction machinery, aerial work platform is widely used in ship, construction, municipal construction, fire protection. This paper applies CAD modeling technology, finite element analysis technology and virtual prototyping technology to the GTZZ21 aerial work platform of a certain enterprise. The parameterized modeling and optimization design of the platform working mechanism are carried out, and some suggestions for structural improvement approved by the enterprise are put forward. The main contents of this paper are as follows: 1) according to the modern design concept and technical route of virtual prototyping, the dynamic analysis model of the work mechanism of aerial work platform is established. The finite element analysis software ANSYS is used for the finite element analysis of the telescopic arm, which combines the finite element analysis method with the optimization method to complete the task of structural parameter optimization design. The experimental scheme is designed and the basic dynamic data of the physical prototype are collected to verify the correctness and reasonableness of the dynamic model of the work mechanism of the aerial work platform. 4) establishing the optimal mathematical model of the hinge point of the variable amplitude cylinder with different objective functions; The optimization design of the working mechanism is carried out by changing the structural parameters. The performance index of the dynamic simulation software ADAMS and the results of the finite element analysis are compared. The optimal combination of structural parameters for the minimum stress of the variable amplitude cylinder and the smallest stress on the dangerous section of the telescopic arm is found out, and the final optimization results are obtained.
【学位授予单位】：南京林业大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH212

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