摘 要

錨鏈輪作為錨機(jī)的重要組成部分，是錨機(jī)正常工作不可少的部分。錨鏈輪在工作時(shí)受到各種載荷的作用，包括彎曲、扭轉(zhuǎn)、振動及拉壓等，受力情況十分復(fù)雜。因此，開展在正常工作和極限工作情況下錨鏈輪應(yīng)力分布及變形情況的研究，分析危險(xiǎn)區(qū)域，提出相關(guān)改進(jìn)措施，對降低事故率，保證順利起拋錨，提高錨鏈輪的質(zhì)量有著十分重要的意義。
本文是利用ABAQUS有限元分析軟件對某船用錨鏈輪結(jié)構(gòu)進(jìn)行有限元分析。選擇有限元單元的類型，確定載荷、選擇計(jì)算工況、確定邊界約束條件，建立了錨鏈輪的有限元分析模型。計(jì)算了該錨鏈輪的靜態(tài)強(qiáng)度、剛度，并以數(shù)據(jù)和圖表的綜合方式給出結(jié)果。
計(jì)算結(jié)果表明錨鏈輪整體應(yīng)力較小，整個(gè)錨鏈輪系統(tǒng)均滿足強(qiáng)度要求。整個(gè)系統(tǒng)中鏈輪的應(yīng)力相對較大，并提出了相關(guān)改進(jìn)措施，從而使設(shè)計(jì)者能全面、直觀地掌握結(jié)構(gòu)的應(yīng)力、應(yīng)變情況，為錨鏈輪的設(shè)計(jì)開發(fā)過程提供可靠的設(shè)計(jì)依據(jù)。


關(guān)鍵詞：錨鏈輪，ABAQUS，有限元，強(qiáng)度分析





ABSTRACT

Anchor chain round as an important component of the machine is essential anchor for the part of the normal work. Anchor chain round at work, the role of various loads, including bending, reverse, vibration and tension and compression, the force is very complex. Therefore, the work carried out in normal circumstances and the limit of the distribution chain round of stress and deformation of the research, analysis dangerous region, to improve relevant measures to reduce the accident rate, ensure a smooth since broken down and improve the quality of anchor chain round is very important Significance.
This paper is to use ABAQUS finite element analysis software for a ship anchor chain round structure of finite element analysis, select the type of finite element unit to determine load, the calculated choice of condition to determine the border constraints, established a chain round of the limited Element analysis model. Calculation of the anchor chain round the static strength, stiffness, and data and charts presented the results of an integrated approach.
The results show that chain round the overall stress smaller, the entire chain round of systems to meet strength requirements. Sprocket system as a whole in the relatively large stress and make the relevant improvement measures, so that designers can be comprehensive, intuitive grasp of the stress and strain, for the anchor chain round the design development process and provide a reliable basis for the design


Key words：Anchor chain round, ABAQUS ,finite element, structural analysis








目 錄

中文摘要 Ⅰ
ABSTRACT Ⅱ
1緒論 1
1.1 論文選題背景 1
1.2 論文的研究目的和意義 1
1.3 課題的研究內(nèi)容 1
2彈性有限元分析基礎(chǔ)理論 3
2.1 有限元發(fā)展與現(xiàn)狀 3
2.2 有限元法的基本原理與方法 4
2.2.1有限元法基本原理 4
2.2.2有限元方法與步驟 4
2.3 結(jié)構(gòu)靜力學(xué)分析的有限單元法 6
2.3.1 單元特性的導(dǎo)出方法 6
2.3.2有限單元法的分析步驟 6
2.4錨鏈輪結(jié)構(gòu)有限元法的研究現(xiàn)狀 15
2.5 ABAQUS程序簡介 16
2.5.1 ABAQUS主要模塊簡介 16
2.5.2 ABAQUS主要分析功能簡介 16
3 錨鏈輪有限元模型建立 19
3.1 錨鏈輪幾何模型 19
3.1.1錨鏈輪結(jié)構(gòu)介紹 20
3.1.2 三維幾何模型 20
3.2 受力分析 21
3.2.1受力簡介 21
3.2.2工況分析 22
3.2.3受力簡化 22
3.3有限元網(wǎng)格模型 22
3.4邊界條件 26
3.5小結(jié) 28
4 錨鏈輪的靜力分析 29
4.1 錨鏈輪強(qiáng)度分析 29
4.2 錨鏈輪剛度分析 33
4.3 小結(jié) 36
5總結(jié) 37
5.1 論文主要工作與結(jié)論 37
5.2 進(jìn)一步工作 37
6致謝 38
參考文獻(xiàn) 39