本文關(guān)鍵詞：起重機(jī)臂架穩(wěn)健可靠性優(yōu)化設(shè)計(jì)　出處：《東北大學(xué)》2012年碩士論文　論文類(lèi)型：學(xué)位論文

  更多相關(guān)文章： 起重機(jī)臂架 穩(wěn)健可靠性 優(yōu)化設(shè)計(jì) ANSYS MATLAB

【摘要】：隨著當(dāng)今世界科技的飛速發(fā)展,各種大型或超大型的工程迅速增多,在滿足起重機(jī)的起升高度更高、起升重量更大、作業(yè)幅度更廣的要求的同時(shí),起重機(jī)結(jié)構(gòu)的輕量化已成為當(dāng)前的一項(xiàng)重要研究?jī)?nèi)容。 本文以某型履帶起重機(jī)的臂架為例,應(yīng)用穩(wěn)健可靠性優(yōu)化的設(shè)計(jì)思想,探討研究了該型起重機(jī)臂架的優(yōu)化問(wèn)題。主要研究工作有以下幾個(gè)方面：根據(jù)臂架的設(shè)計(jì)圖紙及實(shí)際工作中的受載情況,利用有限元分析軟件ANSYS的參數(shù)化編程語(yǔ)言APDL建立了臂架的有限元分析模型,對(duì)較危險(xiǎn)工況進(jìn)行了靜力學(xué)分析,得到了臂架結(jié)構(gòu)中各部分的應(yīng)力分布情況,并對(duì)臂架的穩(wěn)定性進(jìn)行了校核；在臂架靜力學(xué)分析的基礎(chǔ)上,考慮各隨機(jī)參數(shù)的離散性,應(yīng)用有限元分析軟件ANSYS的概率設(shè)計(jì)模塊,對(duì)臂架進(jìn)行了可靠性分析,通過(guò)可靠性分析得到臂架在一定置信度下的可靠度與可靠度對(duì)設(shè)計(jì)變量的靈敏度等相關(guān)信息。應(yīng)用數(shù)值計(jì)算軟件MATLAB,對(duì)臂架進(jìn)行了穩(wěn)健可靠性的優(yōu)化設(shè)計(jì),得到優(yōu)化設(shè)計(jì)解。最后將該優(yōu)化設(shè)計(jì)解重新應(yīng)用ANSYS進(jìn)行可靠性檢驗(yàn),檢驗(yàn)結(jié)果表明該設(shè)計(jì)解滿足穩(wěn)健可靠性優(yōu)化的基本要求,同時(shí)也說(shuō)明了本研究方法的正確性與合理性。 本文所采用的優(yōu)化方法,可為起重機(jī)結(jié)構(gòu)輕量化設(shè)計(jì)提供一定的參考,同時(shí)該方法亦具有一定的通用性,對(duì)于難以建立數(shù)學(xué)模型的機(jī)械產(chǎn)品進(jìn)行穩(wěn)健可靠性優(yōu)化設(shè)計(jì),提供了一種較為方便、實(shí)用和有效的技術(shù)手段,這也是本研究的意義所在。
[Abstract]:With the rapid development of science and technology in the world, a variety of large-scale or super-large projects are rapidly increasing, while meeting the requirements of higher lifting height, greater lifting weight and wider operation range of cranes. The lightening of crane structure has become an important research content at present. Taking the boom of a certain crawler crane as an example, the design idea of robust reliability optimization is applied in this paper. This paper discusses the optimization of the jib of this type crane. The main research work is as follows: according to the design drawings of the jib and the loading situation in the actual work. The finite element analysis model of the boom is established by using the parametric programming language APDL of the finite element analysis software ANSYS, and the statics analysis is carried out under the more dangerous working conditions. The stress distribution of each part of the boom structure is obtained, and the stability of the boom is checked. Based on the static analysis of the boom, considering the discreteness of the random parameters, the reliability of the boom is analyzed by using the probability design module of the finite element analysis software ANSYS. Through the reliability analysis, the reliability and the sensitivity of the reliability to the design variables are obtained under certain confidence. The numerical calculation software MATLAB is used to calculate the reliability and the sensitivity of the reliability to the design variables. The optimal design solution is obtained through the robust reliability optimization design of the boom. Finally, the optimal design solution is re-applied to verify the reliability of the boom with ANSYS. The test results show that the design solution meets the basic requirements of robust reliability optimization, and the correctness and rationality of the method are also demonstrated. The optimization method used in this paper can provide a certain reference for the lightweight design of crane structure, at the same time, this method is also universal. For mechanical products which are difficult to establish mathematical models for robust reliability optimization design, it provides a more convenient, practical and effective technical means, which is also the significance of this study.
【學(xué)位授予單位】：東北大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類(lèi)號(hào)】：TH21

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本文編號(hào)：1431932