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    Viscoelastic–Viscoplastic Cyclic Deformation of Polycarbonate Polymer: Experiment and Constitutive Model

    Source: Journal of Applied Mechanics:;2016:;volume( 083 ):;issue: 004::page 41002
    Author:
    Yu, Chao
    ,
    Kang, Guozheng
    ,
    Lu, Fucong
    ,
    Zhu, Yilin
    ,
    Chen, Kaijuan
    DOI: 10.1115/1.4032374
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: A series of uniaxial tests (including multilevel loading–unloading recovery, creeprecovery, and cyclic tension–compression/tension ones) were performed to investigate the monotonic and cyclic viscoelastic–viscoplastic deformations of polycarbonate (PC) polymer at room temperature. The results show that the PC exhibits strong nonlinearity and ratedependence, and obvious ratchetting occurs during the stresscontrolled cyclic tension–compression/tension tests with nonzero mean stress, which comes from both the viscoelasticity and viscoplasticity of the PC. Based on the experimental observation, a nonlinear viscoelastic–viscoplastic cyclic constitutive model is then constructed. The viscoelastic part of the proposed model is constructed by extending the Schapery's nonlinear viscoelastic model, and the viscoplastic one is established by adopting the Ohno–AbdelKarim's nonlinear kinematic hardening rule to describe the accumulation of irrecoverable viscoplastic strain produced during cyclic loading. Furthermore, the dependence of elastic compliance of the PC on the accumulated viscoplastic strain is considered. Finally, the capability of the proposed model is verified by comparing the predicted results with the corresponding experimental ones of the PC. It is shown that the proposed model provides reasonable predictions to the various deformation characteristics of the PC presented in the multilevel loading–unloading recovery, creeprecovery, and cyclic tension–compression/tension tests.
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      Viscoelastic–Viscoplastic Cyclic Deformation of Polycarbonate Polymer: Experiment and Constitutive Model

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    http://yetl.yabesh.ir/yetl1/handle/yetl/160221
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    contributor authorYu, Chao
    contributor authorKang, Guozheng
    contributor authorLu, Fucong
    contributor authorZhu, Yilin
    contributor authorChen, Kaijuan
    date accessioned2017-05-09T01:25:36Z
    date available2017-05-09T01:25:36Z
    date issued2016
    identifier issn0021-8936
    identifier otherjam_083_04_041002.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/160221
    description abstractA series of uniaxial tests (including multilevel loading–unloading recovery, creeprecovery, and cyclic tension–compression/tension ones) were performed to investigate the monotonic and cyclic viscoelastic–viscoplastic deformations of polycarbonate (PC) polymer at room temperature. The results show that the PC exhibits strong nonlinearity and ratedependence, and obvious ratchetting occurs during the stresscontrolled cyclic tension–compression/tension tests with nonzero mean stress, which comes from both the viscoelasticity and viscoplasticity of the PC. Based on the experimental observation, a nonlinear viscoelastic–viscoplastic cyclic constitutive model is then constructed. The viscoelastic part of the proposed model is constructed by extending the Schapery's nonlinear viscoelastic model, and the viscoplastic one is established by adopting the Ohno–AbdelKarim's nonlinear kinematic hardening rule to describe the accumulation of irrecoverable viscoplastic strain produced during cyclic loading. Furthermore, the dependence of elastic compliance of the PC on the accumulated viscoplastic strain is considered. Finally, the capability of the proposed model is verified by comparing the predicted results with the corresponding experimental ones of the PC. It is shown that the proposed model provides reasonable predictions to the various deformation characteristics of the PC presented in the multilevel loading–unloading recovery, creeprecovery, and cyclic tension–compression/tension tests.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleViscoelastic–Viscoplastic Cyclic Deformation of Polycarbonate Polymer: Experiment and Constitutive Model
    typeJournal Paper
    journal volume83
    journal issue4
    journal titleJournal of Applied Mechanics
    identifier doi10.1115/1.4032374
    journal fristpage41002
    journal lastpage41002
    identifier eissn1528-9036
    treeJournal of Applied Mechanics:;2016:;volume( 083 ):;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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