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 錄
第一章：緒論 1
1.1.課題的背景及意義 1
1.2.國內外發展概況及研究現狀 1
1.2.1連續接觸模型 1
1.2.2二狀態運動模型 2
1.2.3三狀態模型 4
1.3計算機的仿真 5
1.4本文的主要工作 6
第二章：ABAQUS軟件 8
2.1 ABAQUS的特點 8
2.2 ABAQUS的應用范圍 8
2.3 ABAQUS在本課題中的運用 9
第三章：三維建模 11
3.1建模描述 11
3.2 確定分析的運動副 11
3.3使用UG建立模型 12
第四章：含間隙運動副的仿真分析 16
4.1仿真簡介 16
4.2總體分析過程 16
4.2.1仿真分析的步驟： 17
4.2.2模型的導入以及修整 18
4.2.3模型的材料與截面定義 18
4.2.4 分析步的設定 19
4.2.5 ABAQUS中模型的相互作用與邊界條件的設定 20
4.2.6模型上的載荷設定 20
4.2.7 模型的網格劃分 20
4.2.8網格的檢查 22
4.2.9 ABAQUS仿真結果 22
第五章：總結 41
參考文獻： 43
致謝 45
