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    Optimal Open-Loop Ram Velocity Profiles for Isothermal Forging: A Variational Approach

    Source: Journal of Manufacturing Science and Engineering:;1998:;volume( 120 ):;issue: 004::page 774
    Author:
    J. M. Berg
    ,
    W. Garth Frazier
    ,
    A. Chaudhary
    ,
    S. S. Banda
    DOI: 10.1115/1.2830220
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: This paper considers the problem of selecting the ram velocity profile in an isothermal forging, to best obtain a desired material microstructure. This is to be accomplished by tracking a prescribed strain rate profile. A weighting function, reflecting the rate at which the microstructure is transforming, describes the relative importance of different parts of the billet. Finding the optimal solution generally requires a search over an infinite-dimensional function space. However, for a certain class of forgings the task reduces to solving a single ordinary differential equation. The result is a globally optimal and unique ram velocity profile. The method is demonstrated for the simulated forging of a TiAl turbine disk.
    keyword(s): Forging , Forgings (Products) , Differential equations , Turbines , Disks AND Titanium aluminide ,
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      Optimal Open-Loop Ram Velocity Profiles for Isothermal Forging: A Variational Approach

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/120722
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    • Journal of Manufacturing Science and Engineering

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    contributor authorJ. M. Berg
    contributor authorW. Garth Frazier
    contributor authorA. Chaudhary
    contributor authorS. S. Banda
    date accessioned2017-05-08T23:57:08Z
    date available2017-05-08T23:57:08Z
    date copyrightNovember, 1998
    date issued1998
    identifier issn1087-1357
    identifier otherJMSEFK-27335#774_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/120722
    description abstractThis paper considers the problem of selecting the ram velocity profile in an isothermal forging, to best obtain a desired material microstructure. This is to be accomplished by tracking a prescribed strain rate profile. A weighting function, reflecting the rate at which the microstructure is transforming, describes the relative importance of different parts of the billet. Finding the optimal solution generally requires a search over an infinite-dimensional function space. However, for a certain class of forgings the task reduces to solving a single ordinary differential equation. The result is a globally optimal and unique ram velocity profile. The method is demonstrated for the simulated forging of a TiAl turbine disk.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleOptimal Open-Loop Ram Velocity Profiles for Isothermal Forging: A Variational Approach
    typeJournal Paper
    journal volume120
    journal issue4
    journal titleJournal of Manufacturing Science and Engineering
    identifier doi10.1115/1.2830220
    journal fristpage774
    journal lastpage780
    identifier eissn1528-8935
    keywordsForging
    keywordsForgings (Products)
    keywordsDifferential equations
    keywordsTurbines
    keywordsDisks AND Titanium aluminide
    treeJournal of Manufacturing Science and Engineering:;1998:;volume( 120 ):;issue: 004
    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
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