000014123 001__ 14123
000014123 005__ 20161115100142.0
000014123 04107 $$aeng
000014123 046__ $$k2016-08-21
000014123 100__ $$aLi, Ying
000014123 24500 $$aMultiscale constitutive modeling on finite strain viscoelasticity of elastomers

000014123 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000014123 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000014123 506__ $$arestricted
000014123 520__ $$2eng$$aIn this work, we present a mechanistic and physics-based constitutive model to describe and design the finite strain Viscoelastic behavior of elastomers. Mathematically, the Viscoelasticity of elastomers has been decomposed into hyperelastic and viscous parts, which are attributed to the nonlinear deformation of the cross-linked polymer network and the diffusion of free chains, respectively. Combing the non-affine network model for hyperelasticity and modified tube model for viscosity, both understood by molecular simulations, we develop a mechanism-based constitutive model for finite strain Viscoelasticity of elastomers. All the parameters in the proposed constitutive model have physical meanings, which are signatures of polymer chemistry, physics or dynamics. The finite strain Viscoelasticity obtained from our simulations agrees qualitatively with experimental data on both un—vulcanized and vulcanized rubbers, which captures the effects of cross-linking density, the molecular weight of the polymer chain and the strain rate.

000014123 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000014123 653__ $$a

000014123 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000014123 720__ $$aLi, Ying
000014123 8560_ $$ffischerc@itam.cas.cz
000014123 8564_ $$s110098$$uhttps://invenio.itam.cas.cz/record/14123/files/PO.MS05-1.03.29.pdf$$yOriginal version of the author's contribution as presented on CD,  page 316, code PO.MS05-1.03.29
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000014123 962__ $$r13812
000014123 980__ $$aPAPER