【摘要】：將優(yōu)化設(shè)計與可靠性理論相結(jié)合進行門式卸車機的結(jié)構(gòu)可靠性分析.利用ANSYS Workbench進行參數(shù)化實體建模,采用中心復合設(shè)計擬合響應(yīng)面并進行參數(shù)靈敏度分析,在此基礎(chǔ)上分別使用Screening,MOGA及NLPQL 3種算法對參數(shù)尺寸進行優(yōu)化和對比分析,得到最佳設(shè)計方案,在保證滿足強度要求的條件下,減小卸車機體積.再根據(jù)優(yōu)化分析的結(jié)果,以最大等效應(yīng)力不超過材料許用應(yīng)力為可靠性評定指標,使用六西格瑪分析技術(shù)比較模型優(yōu)化前后的結(jié)構(gòu)可靠性,優(yōu)化后的結(jié)構(gòu)可靠性有所提高.在分析結(jié)構(gòu)輕量化問題的同時考慮了其安全可靠性要求,為卸車機的制造與優(yōu)化改進提供了理論指導.
[Abstract]:The structural reliability analysis of the door unloader is carried out by combining the optimal design with the reliability theory. Parametric solid modeling is carried out with ANSYS Workbench, response surface is fitted by central composite design and parameter sensitivity analysis is carried out. On the basis of this, Screening,MOGA and NLPQL algorithms are used to optimize and compare the parameter size, respectively. The optimal design scheme is obtained, and the volume of the unloading machine is reduced under the condition of satisfying the intensity requirement. According to the results of optimization analysis, the maximum equivalent stress is not more than the allowable stress of the material as the reliability evaluation index, and the structural reliability before and after the optimization is compared by using six Sigma analysis technique, and the structural reliability after optimization is improved. The requirement of safety and reliability is taken into account when analyzing the structural lightweight problem, which provides theoretical guidance for the manufacture and optimization improvement of the unloading machine.
【作者單位】： 大連交通大學交通運輸工程學院;大連交通大學機械工程學院;
【基金】：國家自然科學基金資助項目(11272070) 遼寧省自然科學基金資助項目(2014028020) 遼寧省教育廳科學研究資助項目(JDL2016001) 大連市科技開發(fā)資助項目(2015A11GX026)
【分類號】：TH24

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