Monte Carlo Simulation of Uniaxial Deformation of Polyethylene-Like Polymer Glass: Role of Constraints and Deformation Protocol
✍ Scribed by Tim Mulder; Jing Li; Alexey V. Lyulin; Matthias A. J. Michels
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 524 KB
- Volume
- 16
- Category
- Article
- ISSN
- 1022-1344
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
The deformation of a glassy amorphous polymer has been simulated by Monte Carlo. A molecular model with constrained chemical bonds (rigid‐bond model) and one with chemical bonds represented by Gaussian springs (flexible‐bond model) have been compared. Furthermore, two different deformation protocols have been tested. Comparisons on the basis of stress–strain behavior, contributions of various interactions to stress and energy, evolution of density and distribution of dihedral angles, and of pair correlation functions show that both the introduction of constrained bonds and the deformation protocol influence the results dramatically. The results obtained using the flexible‐bond model, employing a deformation protocol in which all the monomers are displaced affinely with the box size, show the best agreement with experimental facts.
magnified image