• modelling of the mechanical behaviour of amorphous glassy polymer based on the quasi point defect theory—part i: uniaxial validation on polycarbonate

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 713
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    • شماره تماس دبیرخانه رویداد: -
     this paper is devoted to the modelling of the viscoelasto-viscoplastic behaviour of amorphous polymers based on the quasi point defects (qpd) theory. a summarized and unified description of the main assumptions is presented in its scalar formulation to compute the complex viscoelasto-viscoplastic behaviour of an amorphous medium in the glassy state from linear to non-linear ranges. based on an original scenario for the microstructural reorganization caused by an external thermomechanical stimulus and related to the two main relaxation processes, this theory allows a coherent description of the material response under large conditions of temperature and strain rate by using a single set of material parameters. a convincing validation is performed on a ductile bisphenol-a polycarbonate (pc-bpa) by comparison between computed results and experimental measurements.

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