对移动运动副的特性分析_理工科论文-免费论文网

对移动运动副的特性分析

机械设计制造及其自动化论文，论文编号:JX1130 论文字数:16698.页数:49

摘要
随着机械向高速、精密化发展，间隙的存在破坏了理想机构模型，也使机构的实际运动和理想运动之间产生误差，所以运动副间隙对机械系统所带来的影响问题已经成为现代机械动力学理论研究的前沿问题之一。为此，本论文主要考虑对含间隙典型运动副副间作用的传递性进行了仿真分析和研究，可以为机械系统设计和动力学行为的精确预测提供分析方法和理论基础，具有重要的理论意义和实际工程价值。
本论文首先对含间隙机构的动力学的研究背景与现状作出了综述，说明现有分析方法的不足之处和仿真方法的优点；使用自己所需的CAE软件—ABAQUS，介绍ABAQUS的特点；再分析了目前广泛应用在大型机械上的典型运动副，确实所需建立的典型运动副模型--移动副，较全面的分析一下间隙对该模型所带来的影响。根据现实中的情况，确实我们所需建立的移动副的数学模型，应用三维软件UG将数学模型转化为三维模型。最后并将建立典型的移动副三维模型导入ABAQUS软件，利用仿真软件ABAQUS构建仿真模型，设置所需的数据，得出相应仿真数据；因为本论文只要研究含间隙移动副对机构的特性的影响，所以我们只仿真分析在运动副副间不同间隙值情况下，可以得到相应情况下静态系统产生的最大应力的曲线图；在运动副表面不同压强的情况下，得到相应情况下静态系统产生的最大应力的曲线图；在运动副副间不同摩擦情况下，得到相应情况下静态系统产生的最大应力曲线图这三种情况。
本论文对这次的仿真进行曲线图的对比分析，整理，总结，得出运动副的间隙的影响是不容忽视的，以及不同参数下含间隙运动副副间的最大应力是不同的。
关键词：间隙 ABAQUS 移动副仿真分析应力

Abstract
With the development of machines towards high speed and high preeision, the existing of clearance destroys the ideal mechanical model, brings error between the fact kinetics and ideal kineties.The dynamie effcets of flexibilities of members and joint clearances in the mcehanisms are a challenge to theoretical analysis when designing and manufacturing a spacecraft. This thesis to consider the research on the theory of multi-body system with joint clearances and the dynamics of deployable mechanism will provide the analysis method and theoretieal basis for the design of space mechanisms and predietion of their dynamic behavior study on these problems has profound theory and application value.
This paper first with clearance of the dynamics of the research background and current status was reviewed, indicating the inadequacy of analysis and simulation method has the advantage; we need a CAE software-ABAQUS, and introduce the characteristics of ABAQUS; further analysis is now widely used in heavy machinery on the Pairs, what is necessary to establish the Pairs of models -- translation joint, a comprehensive analysis of what brought the model space to the effect. According to the present in the situation, do we need to establish a mathematical model of translation joint, applications will be three-dimensional mathematical model of UG software into three-dimensional model. Finally, we will build three-dimensional model of a typical mobile vice ABAQUS software into the use of building simulation software ABAQUS simulation model, set the required data, draw the corresponding simulation data; Because as long as the study of this thesis, with clearance mobile Vice characteristics of the body, so we only simulation in the movement between the different gap values, deputy vice cases, you can obtain a corresponding static system to produce the maximum stress of the curve; in Pairs surface under different pressure, obtain a corresponding static system to produce the maximum stress of curve; in the movement between the Deputy Vice different friction cases, obtain a corresponding static system to produce the maximum stress curve of the three cases.
The paper on the simulation for the comparative analysis of graph, organize, summarize, draw with clearance of movement can not be ignored, and the different parameters with clearance joints between the maximum stress is different.
Key words: Clearance ABAQUS Translation joint Simulation analysis Stress目录
第一章：绪论 1
1.1.课题的背景及意义 1
1.2.国内外发展概况及研究现状 1
1.2.1连续接触模型 1
1.2.2二状态运动模型 2
1.2.3三状态模型 4
1.3计算机的仿真 5
1.4本文的主要工作 6
第二章：ABAQUS软件 8
2.1 ABAQUS的特点 8
2.2 ABAQUS的应用范围 8
2.3 ABAQUS在本课题中的运用 9
第三章：三维建模 11
3.1建模描述 11
3.2 确定分析的运动副 11
3.3使用UG建立模型 12
第四章：含间隙运动副的仿真分析 16
4.1仿真简介 16
4.2总体分析过程 16
4.2.1仿真分析的步骤： 17
4.2.2模型的导入以及修整 18
4.2.3模型的材料与截面定义 18
4.2.4 分析步的设定 19
4.2.5 ABAQUS中模型的相互作用与边界条件的设定 20
4.2.6模型上的载荷设定 20
4.2.7 模型的网格划分 20
4.2.8网格的检查 22
4.2.9 ABAQUS仿真结果 22
第五章：总结 41
参考文献： 43
致谢 45