کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
279939 | 1430364 | 2007 | 17 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Modeling and validation of the large deformation inelastic response of amorphous polymers over a wide range of temperatures and strain rates Modeling and validation of the large deformation inelastic response of amorphous polymers over a wide range of temperatures and strain rates](/preview/png/279939.png)
A robust physically consistent three-dimensional constitutive model is developed to describe the finite mechanical response of amorphous polymers over a wide range of temperatures and strain rates, including the rubbery region and for impact loading rates. This thermomechanical model is based on an elastic–viscoplastic rheological approach, wherein the effects of temperature, strain rate, and hydrostatic pressure are accounted for. Intramolecular, as well as intermolecular, interactions under large elastic–inelastic behavior are considered for the mechanisms of deformation and hardening. For a wide range of temperatures and strain rates, our simulated results for poly(methyl methacrylate) (PMMA) and polycarbonate (PC) are in good agreement with experimental observations.
Journal: International Journal of Solids and Structures - Volume 44, Issue 24, 1 December 2007, Pages 7938–7954