University of Illinois Urbana-Champaign

On the two-potential constitutive modelling of rubber viscoelastic materials

Kumar, Aditya

Content Files
KUMAR-THESIS-2016.pdf

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

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
Date of Ingest
2016-07-07T20:27:55Z
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
Permalink
http://hdl.handle.net/2142/90814
Copyright and License Information
Copyright 2016 Aditya Kumar

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Graduate Dissertations and Theses at Illinois PRIMARY
Graduate Theses and Dissertations at Illinois