On the two-potential constitutive modelling of rubber viscoelastic materials

Kumar, Aditya

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https://hdl.handle.net/2142/90814 Copy

Description

Title

On the two-potential constitutive modelling of rubber viscoelastic materials

Author(s)

Kumar, Aditya

Issue Date

2016-04-25

Director of Research (if dissertation) or Advisor (if thesis)

Lopez-Pamies, Oscar

Department of Study

Civil & Environmental Eng

Discipline

Civil Engineering

Degree Granting Institution

University of Illinois at Urbana-Champaign

Degree Name

M.S.

Degree Level

Thesis

Keyword(s)

• finite deformations
• internal variables
• dissipative solids
• soft solids

Abstract

"This work lays out the specialization of the two-potential constitutive framework --- also known as the ""generalized standard materials'' framework --- to rubber viscoelasticity. Inter alia, it is shown that a number of popular rubber viscoelasticity formulations, introduced over the years following different approaches, are special cases of this framework. As a first application of practical relevance, the framework is utilized to put forth a new objective and thermodynamically consistent rubber viscoelastic model for incompressible isotropic elastomers. The model accounts for the non-Gaussian elasticity of elastomers, as well as for the deformation-enhanced shear thinning of their viscous dissipation governed by reptation dynamics. The descriptive and predictive capabilities of the model are illustrated via comparisons with experimental data available from the literature for two commercially significant elastomers."

Graduation Semester

2016-05

Type of Resource

text

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http://hdl.handle.net/2142/90814

Copyright and License Information

Copyright 2016 Aditya Kumar

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