25m高空作业平台结构设计及有限元分析+图纸
毕业论文关键词：ANSYS；设计结构；有限元；高空平台
Abstract
Aerial work platforms is a type of construction machinery which can raise people and things to a certain height. It is widely used in urban construction and a variety of outdoor jobs. Traditional design uses a safety factor method. This method is not only time consuming, but also it does not have a high precision. Now, using the finite element method and using ANSYS software to analysis and calculate not only has a high precision, but also we can clearly see the size of the entire stress, and improve them easily. First, according to the height which is required to achieve a high degree of 25m, select the overall structure of aerial work platforms, then to determine the length of each boom section and select the location of the hinge points. Then, according to the strength conditions to determine the cross-sectional dimensions of high-altitude operation arms. The choice of materials is Q235, and the elastic modulus is 206GPa. Poisson's ratio of Q235 is 0.3, and its density is 7850kg / m3. Using PRO/E software to draw a three dimensional models, and then import the models into the finite element software. Besides, we should also definite the material properties and mesh. Imposing constraints and loads based on the actual situation of aerial work platforms,and then solved analytically. According to results of the analysis to identify dangerous section and the danger point on the operation arms. observe the stress and strain values, and find that they are compliant with safety standards, but more than excessive. We can reduce material consumption in order to solve excessive portion of the remainder. Finally, draw the upper and lower arm part and draw the whole assembly drawings.
Keywords: ANSYS;Structural Design;Finite Element;Aerial Work Platform
目录
摘要
Abstract
第一章 绪论 1
1.1 高空作业平台的概况以及前景 1
1.1.1 高空作业平台的综述 1
1.1.2 高空作业平台发展趋势 1
1.2 高空作业平台组成及其技术参数 1
1.2.1 工作机构 1
1.2.2 控制系统 1
1.2.3 动力装置 2
1.2.4 金属结构 2
1.2.5 作业平台主要技术参数 2
1.3 课题研究需要完成的任务 2
1.4 课题研究的意义 3
1.5 课题研究方法以及技术路线 3
第二章 高空作业平台结构设计 4
2.1 材料的确定 4
2.2 高空作业平台类型选择 4
2.3 伸缩原理 5
2.4 计算上臂和下臂的臂长 5