Abstract
A physically constitutive model based on the concepts of quasipoint defects and hierarchically constrained molecular dynamics is applied to describe the sub-Tg inelastic behavior of amorphous polymers over a wide range of temperature and strain rates. Temperature and strain rate greatly influence the mechanical response of amorphous polymers. The results satisfactorily reproduce experimental observations and provide a general physical explanation for the occurrence of the change in deformation regime observed at a temperature lower than Tg. The kinetic equilibrium occurring between the creation of defects due to plastic deformation and their annihilation through structural relaxation is shown to play a major role in the existence of the two regimes of deformation.
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Ouali, N., Ahmed Benyahia, A. (2015). Analysis of Inelastic Behavior of Amorphous Polymers. In: Haddar, M., et al. Multiphysics Modelling and Simulation for Systems Design and Monitoring. MMSSD 2014. Applied Condition Monitoring, vol 2. Springer, Cham. https://doi.org/10.1007/978-3-319-14532-7_18
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DOI: https://doi.org/10.1007/978-3-319-14532-7_18
Publisher Name: Springer, Cham
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