Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7920194 | Journal of Physics and Chemistry of Solids | 2018 | 7 Pages |
Abstract
We perform thorough molecular-dynamics simulations to compare elasticity and yielding of atomic crystals and model semicrystalline polymers, the latter characterized by very similar positional ordering with respect to atomic crystals and considerable bond disorder. We find that the elastic modulus G, the shear yield strength, ÏY, and the critical yield strain εc of semicrystalline polymers are higher than (G, ÏY), or comparable to (εc), the corresponding ones of atomic crystals. The findings suggest that the bond disorder suppresses dislocation-mediated plasticity in polymeric solids with positional order.
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Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
A. Giuntoli, D. Leporini,