機(jī)械設(shè)計制造及其自動化論文，論文編號:JX1130  論文字?jǐn)?shù):16698.頁數(shù):49

摘   要
 隨著機(jī)械向高速、精密化發(fā)展，間隙的存在破壞了理想機(jī)構(gòu)模型，也使機(jī)構(gòu)的實際運(yùn)動和理想運(yùn)動之間產(chǎn)生誤差，所以運(yùn)動副間隙對機(jī)械系統(tǒng)所帶來的影響問題已經(jīng)成為現(xiàn)代機(jī)械動力學(xué)理論研究的前沿問題之一。為此，本論文主要考慮對含間隙典型運(yùn)動副副間作用的傳遞性進(jìn)行了仿真分析和研究，可以為機(jī)械系統(tǒng)設(shè)計和動力學(xué)行為的精確預(yù)測提供分析方法和理論基礎(chǔ)，具有重要的理論意義和實際工程價值。
 本論文首先對含間隙機(jī)構(gòu)的動力學(xué)的研究背景與現(xiàn)狀作出了綜述，說明現(xiàn)有分析方法的不足之處和仿真方法的優(yōu)點(diǎn)；使用自己所需的CAE軟件—ABAQUS，介紹ABAQUS的特點(diǎn)；再分析了目前廣泛應(yīng)用在大型機(jī)械上的典型運(yùn)動副，確實所需建立的典型運(yùn)動副模型--移動副，較全面的分析一下間隙對該模型所帶來的影響。根據(jù)現(xiàn)實中的情況，確實我們所需建立的移動副的數(shù)學(xué)模型，應(yīng)用三維軟件UG將數(shù)學(xué)模型轉(zhuǎn)化為三維模型。最后并將建立典型的移動副三維模型導(dǎo)入ABAQUS軟件，利用仿真軟件ABAQUS構(gòu)建仿真模型，設(shè)置所需的數(shù)據(jù)，得出相應(yīng)仿真數(shù)據(jù)；因為本論文只要研究含間隙移動副對機(jī)構(gòu)的特性的影響，所以我們只仿真分析在運(yùn)動副副間不同間隙值情況下，可以得到相應(yīng)情況下靜態(tài)系統(tǒng)產(chǎn)生的最大應(yīng)力的曲線圖；在運(yùn)動副表面不同壓強(qiáng)的情況下，得到相應(yīng)情況下靜態(tài)系統(tǒng)產(chǎn)生的最大應(yīng)力的曲線圖；在運(yùn)動副副間不同摩擦情況下，得到相應(yīng)情況下靜態(tài)系統(tǒng)產(chǎn)生的最大應(yīng)力曲線圖這三種情況。
 本論文對這次的仿真進(jìn)行曲線圖的對比分析，整理，總結(jié)，得出運(yùn)動副的間隙的影響是不容忽視的，以及不同參數(shù)下含間隙運(yùn)動副副間的最大應(yīng)力是不同的。
關(guān)鍵詞：間隙  ABAQUS  移動副  仿真分析  應(yīng)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  錄
第一章：緒論 1
1.1.課題的背景及意義 1
1.2.國內(nèi)外發(fā)展概況及研究現(xiàn)狀 1
 1.2.1連續(xù)接觸模型 1
 1.2.2二狀態(tài)運(yùn)動模型 2
 1.2.3三狀態(tài)模型 4
1.3計算機(jī)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(diǎn) 8
2.2 ABAQUS的應(yīng)用范圍 8
2.3  ABAQUS在本課題中的運(yùn)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(yùn)動副 11
3.3使用UG建立模型 12
第四章：含間隙運(yùn)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(dǎo)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(shè)定 19
 4.2.5  ABAQUS中模型的相互作用與邊界條件的設(shè)定 20
 4.2.6模型上的載荷設(shè)定 20
 4.2.7  模型的網(wǎng)格劃分 20
 4.2.8網(wǎng)格的檢查 22
 4.2.9  ABAQUS仿真結(jié)果 22
第五章：總結(jié) 41
參考文獻(xiàn)： 43
致謝 45