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    Stress Minimization of Structures Based on Bidirectional Evolutionary Procedure

    Source: Journal of Structural Engineering:;2019:;Volume ( 145 ):;issue: 002
    Author:
    Khodamorad Nabaki; Jianhu Shen; Xiaodong Huang
    DOI: 10.1061/(ASCE)ST.1943-541X.0002264
    Publisher: American Society of Civil Engineers
    Abstract: This paper develops a method for dealing with the stress minimization of continuum structures based on the bidirectional evolutionary structural optimization (BESO) method. The modified p-norm approach has been used to assemble all the local stresses in one global function for saving computational cost. The BESO method has been extended for the p-norm stress minimization while the volume constraint has been satisfied for the specified value. For updating the discrete design variables, the elemental sensitivity numbers have been derived where the sensitivity filtering approach has been used. To validate the proposed method, numerical examples including the L-bracket, cantilever, and Eyebar beams are presented. Compared with the traditional stiffness optimization, the stress-based topology optimization developed in this paper significantly alleviates the maximum stress of the optimized design.
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      Stress Minimization of Structures Based on Bidirectional Evolutionary Procedure

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4254290
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    contributor authorKhodamorad Nabaki; Jianhu Shen; Xiaodong Huang
    date accessioned2019-03-10T11:48:03Z
    date available2019-03-10T11:48:03Z
    date issued2019
    identifier other%28ASCE%29ST.1943-541X.0002264.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4254290
    description abstractThis paper develops a method for dealing with the stress minimization of continuum structures based on the bidirectional evolutionary structural optimization (BESO) method. The modified p-norm approach has been used to assemble all the local stresses in one global function for saving computational cost. The BESO method has been extended for the p-norm stress minimization while the volume constraint has been satisfied for the specified value. For updating the discrete design variables, the elemental sensitivity numbers have been derived where the sensitivity filtering approach has been used. To validate the proposed method, numerical examples including the L-bracket, cantilever, and Eyebar beams are presented. Compared with the traditional stiffness optimization, the stress-based topology optimization developed in this paper significantly alleviates the maximum stress of the optimized design.
    publisherAmerican Society of Civil Engineers
    titleStress Minimization of Structures Based on Bidirectional Evolutionary Procedure
    typeJournal Paper
    journal volume145
    journal issue2
    journal titleJournal of Structural Engineering
    identifier doi10.1061/(ASCE)ST.1943-541X.0002264
    page04018256
    treeJournal of Structural Engineering:;2019:;Volume ( 145 ):;issue: 002
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian