本文關(guān)鍵詞：橋式起重機箱形主梁的結(jié)構(gòu)仿生優(yōu)化設(shè)計　出處：《中北大學》2013年碩士論文　論文類型：學位論文

  更多相關(guān)文章： 起重機 主梁 結(jié)構(gòu)仿生 葉脈 竹子

【摘要】：為適應(yīng)現(xiàn)代制造業(yè)激烈的競爭環(huán)境，提高自主創(chuàng)新能力，加強新的設(shè)計方法和設(shè)計理論在起重機金屬結(jié)構(gòu)設(shè)計上的應(yīng)用。本文基于結(jié)構(gòu)仿生優(yōu)化設(shè)計思想，結(jié)合拓撲優(yōu)化分析，對QD75T/31.5m橋式起重機最主要的金屬結(jié)構(gòu)——箱形主梁，進行了結(jié)構(gòu)仿生優(yōu)化設(shè)計研究，設(shè)計結(jié)果可供起重機設(shè)計人員參考。同時為起重機突破傳統(tǒng)經(jīng)驗設(shè)計提供了一種新的設(shè)計思路。本文主要完成了以下幾個方面的內(nèi)容： (1)闡述了起重機在裝備制造業(yè)中的重要性，綜述了起重機的發(fā)展現(xiàn)狀、研究方向和現(xiàn)代設(shè)計方法。引入仿生學設(shè)計思想，介紹了仿生學方面的研究背景。論述了本課題研究的目的及意義。 (2)闡述了結(jié)構(gòu)仿生的概念，研究內(nèi)容和一般設(shè)計流程及相似性評價標準，指出了結(jié)構(gòu)仿生過程中需要注意的問題，探討了結(jié)構(gòu)仿生與結(jié)構(gòu)優(yōu)化之間的聯(lián)系。 (3)簡要介紹了橋式起重機的主要技術(shù)參數(shù)和基本組成部件。使用傳統(tǒng)設(shè)計方法設(shè)計出橋式起重機的箱形主梁，作為后續(xù)結(jié)構(gòu)仿生設(shè)計的原模型。用有限元分析軟件對仿生原型進行靜力學分析與模態(tài)分析，得到仿生原型的最大變形、最大應(yīng)力和前六階模態(tài)的固有頻率。結(jié)合有限元分析結(jié)果與主梁的校核準則對仿生原型進行了校核。 (4)基于結(jié)構(gòu)仿生理論的設(shè)計思想，尋找生物原型，憑借模糊相似理論對生物原型與箱形主梁進行相似度計算，確定分別以竹子和王蓮為生物原型。對竹子和王蓮兩種生物原型的結(jié)構(gòu)和構(gòu)型規(guī)律進行了研究和提取，并應(yīng)用于橋式起重機箱形主梁的結(jié)構(gòu)仿生優(yōu)化設(shè)計研究中，建立了兩種仿生型主梁模型，并對仿生型主梁進行了靜力學分析和模態(tài)分析。 (5)對比兩種仿生型主梁與原型主梁的有限元分析結(jié)果，結(jié)果顯示兩種仿生型主梁在減重和提高比剛度、比強度方面具有明顯的優(yōu)化效果，，證明結(jié)構(gòu)仿生設(shè)計在橋式起重機箱形主梁的優(yōu)化設(shè)計中確實有效可行。
[Abstract]:In order to adapt to the fierce competition environment of modern manufacturing industry, improve the ability of independent innovation, and strengthen the application of new design method and design theory in crane metal structure design, this paper based on the idea of structural bionic optimization design. Combined with topology optimization analysis, the structural bionic optimization design of the main metal structure-box girder of QD75T/31.5m bridge crane is studied. The design results can be used as a reference for crane designers. At the same time, it provides a new design idea for cranes to break through the traditional experience design. The main contents of this paper are as follows: This paper expounds the importance of crane in the equipment manufacturing industry, summarizes the present situation, research direction and modern design method of crane, and introduces the idea of bionic design. The research background of bionics is introduced, and the purpose and significance of this research are discussed. This paper expounds the concept of structural bionics, the research contents, general design flow and similarity evaluation criteria, and points out the problems needing attention in the process of structural bionics. The relationship between structural bionics and structural optimization is discussed. The main technical parameters and basic components of the bridge crane are briefly introduced. The box girder of the bridge crane is designed by using the traditional design method. As the original model of the subsequent bionic design, the static analysis and modal analysis of the bionic prototype are carried out by using the finite element analysis software, and the maximum deformation of the bionic prototype is obtained. The maximum stress and the natural frequency of the first six modes are combined with the results of the finite element analysis and the check criterion of the main beam to check the bionic prototype. 4) based on the design idea of structural bionic theory, to find the biological prototype, and calculate the similarity between the biological prototype and the box girder by the fuzzy similarity theory. Using bamboo and lotus as biological prototypes, the structure and configuration of bamboo and Wang lotus were studied and extracted. Two kinds of bionic main beam models are established in the study of structural bionic optimization design of box-shaped main girder of bridge crane, and static and modal analysis of bionic main girder are carried out. 5) the finite element analysis results of two kinds of bionic main beams and prototype main beams are compared. The results show that the two kinds of bionic main beams have obvious optimization effect in reducing weight, increasing specific stiffness and specific strength. It is proved that the structural bionic design is effective and feasible in the optimization design of the box girder of the bridge crane.
【學位授予單位】：中北大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：TH215

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