Mechanical response of HEMA gel under cyclic deformation: Viscoplasticity and swelling-induced recovery

A. D. Drozdov; C. G. Sanporean; J. De

doi:10.1016/j.ijsolstr.2014.10.009

Mechanical response of HEMA gel under cyclic deformation: Viscoplasticity and swelling-induced recovery

A. D. Drozdov, C. G. Sanporean, J. De

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

Observations are reported on poly(2-hydroxyethyl methacrylate) (HEMA) gels with various degrees of swelling in uniaxial tensile tests, relaxation tests, cyclic tests with a strain-controlled program, and multiple-step tests where cyclic deformation is alternated with periods of re-swelling. Constitutive equations are derived for solvent transport and the viscoplastic response of a hydrogel under an arbitrary deformation with finite strains. Adjustable parameters in the stress-strain relations are found by fitting the experimental data. Special attention is focused on the self-recovery phenomenon: a decay in plastic deformation under swelling of a preloaded sample.

Original language	English
Pages (from-to)	220-234
Number of pages	15
Journal	International Journal of Solids and Structures
Volume	52
DOIs	https://doi.org/10.1016/j.ijsolstr.2014.10.009
State	Published - 1 Jan 2015
Externally published	Yes

Keywords

Constitutive modeling
Finite viscoplasticity
Hydrogel
Self-recovery

ASJC Scopus subject areas

Modeling and Simulation
General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Applied Mathematics

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10.1016/j.ijsolstr.2014.10.009

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title = "Mechanical response of HEMA gel under cyclic deformation: Viscoplasticity and swelling-induced recovery",

abstract = "Observations are reported on poly(2-hydroxyethyl methacrylate) (HEMA) gels with various degrees of swelling in uniaxial tensile tests, relaxation tests, cyclic tests with a strain-controlled program, and multiple-step tests where cyclic deformation is alternated with periods of re-swelling. Constitutive equations are derived for solvent transport and the viscoplastic response of a hydrogel under an arbitrary deformation with finite strains. Adjustable parameters in the stress-strain relations are found by fitting the experimental data. Special attention is focused on the self-recovery phenomenon: a decay in plastic deformation under swelling of a preloaded sample.",

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T2 - Viscoplasticity and swelling-induced recovery

AU - Drozdov, A. D.

AU - Sanporean, C. G.

AU - De, J.

PY - 2015/1/1

Y1 - 2015/1/1

N2 - Observations are reported on poly(2-hydroxyethyl methacrylate) (HEMA) gels with various degrees of swelling in uniaxial tensile tests, relaxation tests, cyclic tests with a strain-controlled program, and multiple-step tests where cyclic deformation is alternated with periods of re-swelling. Constitutive equations are derived for solvent transport and the viscoplastic response of a hydrogel under an arbitrary deformation with finite strains. Adjustable parameters in the stress-strain relations are found by fitting the experimental data. Special attention is focused on the self-recovery phenomenon: a decay in plastic deformation under swelling of a preloaded sample.

AB - Observations are reported on poly(2-hydroxyethyl methacrylate) (HEMA) gels with various degrees of swelling in uniaxial tensile tests, relaxation tests, cyclic tests with a strain-controlled program, and multiple-step tests where cyclic deformation is alternated with periods of re-swelling. Constitutive equations are derived for solvent transport and the viscoplastic response of a hydrogel under an arbitrary deformation with finite strains. Adjustable parameters in the stress-strain relations are found by fitting the experimental data. Special attention is focused on the self-recovery phenomenon: a decay in plastic deformation under swelling of a preloaded sample.

KW - Constitutive modeling

KW - Finite viscoplasticity

KW - Hydrogel

KW - Self-recovery

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M3 - Article

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SN - 0020-7683

VL - 52

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JO - International Journal of Solids and Structures

JF - International Journal of Solids and Structures

ER -

Mechanical response of HEMA gel under cyclic deformation: Viscoplasticity and swelling-induced recovery

Abstract

Keywords

ASJC Scopus subject areas

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