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    Coefficient of Restitution in a Low-Velocity Normal Impact Using Elastoplastic Contact Stiffness

    Source: Journal of Applied Mechanics:;2025:;volume( 092 ):;issue: 003::page 31003-1
    Author:
    Iqbal, Uzair
    ,
    Revankar A., Gautam
    ,
    Kasula, Vineethkumar
    ,
    Bobji, M. S.
    DOI: 10.1115/1.4067566
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Elastoplastic deformation during particle impact occurs widely in many engineering applications. The material properties characterizing both the elastic and plastic behavior play an important role in particle impact. A non-linear contact stiffness-based model representing the elastic and plastic deformation of the material is used to obtain the coefficient of restitution during the impact of a sphere on a deformable substrate. The model consists of the Maxwell combination of perfectly plastic component and a non-linear elastic component. The proposed model is used to estimate the plastic energy dissipation during the impact. An analytical solution is obtained for residual contact radius and coefficient of restitution expressed in terms of experimentally determinable parameters. Our approach yields a single dimensionless parameter referred to as the “indentation parameter,” Λ, and it is shown that the impact response and coefficient of restitution for various impact situations can be determined based on this indentation parameter. The proposed model accurately predicts the residual contact radius and coefficient of restitution, validated through experimental results of low-velocity impacts (1–4 m/s) over a flat sample of aluminum alloy (Al6061) impacted by steel and zirconia balls. The present model is further compared with other existing theoretical contact models for the elastoplastic impact and the extension of the present model for other dissipative systems is also discussed.
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      Coefficient of Restitution in a Low-Velocity Normal Impact Using Elastoplastic Contact Stiffness

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    contributor authorIqbal, Uzair
    contributor authorRevankar A., Gautam
    contributor authorKasula, Vineethkumar
    contributor authorBobji, M. S.
    date accessioned2025-04-21T10:18:40Z
    date available2025-04-21T10:18:40Z
    date copyright1/24/2025 12:00:00 AM
    date issued2025
    identifier issn0021-8936
    identifier otherjam_92_3_031003.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4305917
    description abstractElastoplastic deformation during particle impact occurs widely in many engineering applications. The material properties characterizing both the elastic and plastic behavior play an important role in particle impact. A non-linear contact stiffness-based model representing the elastic and plastic deformation of the material is used to obtain the coefficient of restitution during the impact of a sphere on a deformable substrate. The model consists of the Maxwell combination of perfectly plastic component and a non-linear elastic component. The proposed model is used to estimate the plastic energy dissipation during the impact. An analytical solution is obtained for residual contact radius and coefficient of restitution expressed in terms of experimentally determinable parameters. Our approach yields a single dimensionless parameter referred to as the “indentation parameter,” Λ, and it is shown that the impact response and coefficient of restitution for various impact situations can be determined based on this indentation parameter. The proposed model accurately predicts the residual contact radius and coefficient of restitution, validated through experimental results of low-velocity impacts (1–4 m/s) over a flat sample of aluminum alloy (Al6061) impacted by steel and zirconia balls. The present model is further compared with other existing theoretical contact models for the elastoplastic impact and the extension of the present model for other dissipative systems is also discussed.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleCoefficient of Restitution in a Low-Velocity Normal Impact Using Elastoplastic Contact Stiffness
    typeJournal Paper
    journal volume92
    journal issue3
    journal titleJournal of Applied Mechanics
    identifier doi10.1115/1.4067566
    journal fristpage31003-1
    journal lastpage31003-9
    page9
    treeJournal of Applied Mechanics:;2025:;volume( 092 ):;issue: 003
    contenttypeFulltext
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