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    A Simplified Method to Account for Plastic Rate Sensitivity With Large Deformations

    Source: Journal of Applied Mechanics:;1979:;volume( 046 ):;issue: 004::page 811
    Author:
    N. Perrone
    ,
    P. Bhadra
    DOI: 10.1115/1.3424659
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: A string supported impulsively loaded mass is used to study large deformation rate sensitivity effects where membrane action is dominant. It is found that an overall correction factor can be devised using physical properties associated with the average strain rate. Maximum strain rate occurs with a velocity field corresponding to the deformation state wherein half the initial kinetic energy has been dissipated. (If V0 is initial velocity, V0 /2 is associated with maximum strain rate.) Exact and approximate solutions for a broad range of parameters serve to illustrate and verify the procedure. A discussion is presented to show how the same methodology could also be applied via a modal approach to an arbitrary three-dimensional structure undergoing large deformations, if the primary mechanism for energy absorption is from membrane action.
    keyword(s): Deformation , Membranes , Mechanisms , Absorption , Kinetic energy AND String ,
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      A Simplified Method to Account for Plastic Rate Sensitivity With Large Deformations

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/91667
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    contributor authorN. Perrone
    contributor authorP. Bhadra
    date accessioned2017-05-08T23:05:56Z
    date available2017-05-08T23:05:56Z
    date copyrightDecember, 1979
    date issued1979
    identifier issn0021-8936
    identifier otherJAMCAV-26131#811_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/91667
    description abstractA string supported impulsively loaded mass is used to study large deformation rate sensitivity effects where membrane action is dominant. It is found that an overall correction factor can be devised using physical properties associated with the average strain rate. Maximum strain rate occurs with a velocity field corresponding to the deformation state wherein half the initial kinetic energy has been dissipated. (If V0 is initial velocity, V0 /2 is associated with maximum strain rate.) Exact and approximate solutions for a broad range of parameters serve to illustrate and verify the procedure. A discussion is presented to show how the same methodology could also be applied via a modal approach to an arbitrary three-dimensional structure undergoing large deformations, if the primary mechanism for energy absorption is from membrane action.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleA Simplified Method to Account for Plastic Rate Sensitivity With Large Deformations
    typeJournal Paper
    journal volume46
    journal issue4
    journal titleJournal of Applied Mechanics
    identifier doi10.1115/1.3424659
    journal fristpage811
    journal lastpage816
    identifier eissn1528-9036
    keywordsDeformation
    keywordsMembranes
    keywordsMechanisms
    keywordsAbsorption
    keywordsKinetic energy AND String
    treeJournal of Applied Mechanics:;1979:;volume( 046 ):;issue: 004
    contenttypeFulltext
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