Hyper-viscoelastic constitutive models for predicting the material behavior of polyurethane under varying strain rates and uniaxial tensile loading

H. M.C.C. Somarathna, S. N. Raman, D. Mohotti, A. A. Mutalib, K. H. Badri

Research output: Contribution to journalArticle

Abstract

Non-linearity, loading rate, as well as temperature and pressure dependency present major challenges in the investigation of properties, particularly the mechanical properties of elastomeric polymers. Recently, material and structural engineers have focused on investigating the mechanical behavior of hyper-elastic materials under varying strain rate conditions. In addition, they have been developing constitutive models to define the non-linear behavior of these materials, combined with the strain rate effect, which simulates behavior under different loading conditions. In this study, a new viscoelastic model is proposed to simulate the variation in the mechanical properties of elastomeric materials. Hyper-viscoelastic constitutive models were also developed by modifying existing hyper-elastic models (Mooney–Rivlin and Ogden) with existing viscoplastic models (Cowper–Symonds and Johnson–Cook) and the proposed viscoelastic model. The proposed models were verified through experimental results by investigating the uniaxial tensile behavior of an elastomeric polyurethane (PU) sample under varying low strain rate regimes (0.001 s−1–0.1 s−1). The proposed viscoelastic model exhibited the best correlation to present the enhancement of mechanical properties under varying strain rate conditions compared with the Cowper–Symonds and Johnson–Cook models. The proposed hyper-viscoelastic models could be used to predict material behavior using only one set of hyper-elastic model parameters at a certain strain rate, combined with viscoelastic model parameters. The hyper-viscoelastic cumulative strain energy and stress–strain models, which were developed with the proposed viscoelastic model, demonstrated high accuracy in predicting material behavior with the strain rate effect of elastomeric PU or similar materials.

Original languageEnglish
Article number117417
JournalConstruction and Building Materials
Volume236
DOIs
Publication statusPublished - 10 Mar 2020

Fingerprint

Polyurethanes
Constitutive models
Strain rate
Mechanical properties
Strain energy
Polymers

Keywords

  • Hyper-viscoelastic constitutive models
  • Hyperelasticity
  • Polyurethane
  • Viscoelasticity

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)

Cite this

Hyper-viscoelastic constitutive models for predicting the material behavior of polyurethane under varying strain rates and uniaxial tensile loading. / Somarathna, H. M.C.C.; Raman, S. N.; Mohotti, D.; Mutalib, A. A.; Badri, K. H.

In: Construction and Building Materials, Vol. 236, 117417, 10.03.2020.

Research output: Contribution to journalArticle

@article{981f6ace7a2546e4b8d9b8f75bc7f4f4,
title = "Hyper-viscoelastic constitutive models for predicting the material behavior of polyurethane under varying strain rates and uniaxial tensile loading",
abstract = "Non-linearity, loading rate, as well as temperature and pressure dependency present major challenges in the investigation of properties, particularly the mechanical properties of elastomeric polymers. Recently, material and structural engineers have focused on investigating the mechanical behavior of hyper-elastic materials under varying strain rate conditions. In addition, they have been developing constitutive models to define the non-linear behavior of these materials, combined with the strain rate effect, which simulates behavior under different loading conditions. In this study, a new viscoelastic model is proposed to simulate the variation in the mechanical properties of elastomeric materials. Hyper-viscoelastic constitutive models were also developed by modifying existing hyper-elastic models (Mooney–Rivlin and Ogden) with existing viscoplastic models (Cowper–Symonds and Johnson–Cook) and the proposed viscoelastic model. The proposed models were verified through experimental results by investigating the uniaxial tensile behavior of an elastomeric polyurethane (PU) sample under varying low strain rate regimes (0.001 s−1–0.1 s−1). The proposed viscoelastic model exhibited the best correlation to present the enhancement of mechanical properties under varying strain rate conditions compared with the Cowper–Symonds and Johnson–Cook models. The proposed hyper-viscoelastic models could be used to predict material behavior using only one set of hyper-elastic model parameters at a certain strain rate, combined with viscoelastic model parameters. The hyper-viscoelastic cumulative strain energy and stress–strain models, which were developed with the proposed viscoelastic model, demonstrated high accuracy in predicting material behavior with the strain rate effect of elastomeric PU or similar materials.",
keywords = "Hyper-viscoelastic constitutive models, Hyperelasticity, Polyurethane, Viscoelasticity",
author = "Somarathna, {H. M.C.C.} and Raman, {S. N.} and D. Mohotti and Mutalib, {A. A.} and Badri, {K. H.}",
year = "2020",
month = "3",
day = "10",
doi = "10.1016/j.conbuildmat.2019.117417",
language = "English",
volume = "236",
journal = "Construction and Building Materials",
issn = "0950-0618",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Hyper-viscoelastic constitutive models for predicting the material behavior of polyurethane under varying strain rates and uniaxial tensile loading

AU - Somarathna, H. M.C.C.

AU - Raman, S. N.

AU - Mohotti, D.

AU - Mutalib, A. A.

AU - Badri, K. H.

PY - 2020/3/10

Y1 - 2020/3/10

N2 - Non-linearity, loading rate, as well as temperature and pressure dependency present major challenges in the investigation of properties, particularly the mechanical properties of elastomeric polymers. Recently, material and structural engineers have focused on investigating the mechanical behavior of hyper-elastic materials under varying strain rate conditions. In addition, they have been developing constitutive models to define the non-linear behavior of these materials, combined with the strain rate effect, which simulates behavior under different loading conditions. In this study, a new viscoelastic model is proposed to simulate the variation in the mechanical properties of elastomeric materials. Hyper-viscoelastic constitutive models were also developed by modifying existing hyper-elastic models (Mooney–Rivlin and Ogden) with existing viscoplastic models (Cowper–Symonds and Johnson–Cook) and the proposed viscoelastic model. The proposed models were verified through experimental results by investigating the uniaxial tensile behavior of an elastomeric polyurethane (PU) sample under varying low strain rate regimes (0.001 s−1–0.1 s−1). The proposed viscoelastic model exhibited the best correlation to present the enhancement of mechanical properties under varying strain rate conditions compared with the Cowper–Symonds and Johnson–Cook models. The proposed hyper-viscoelastic models could be used to predict material behavior using only one set of hyper-elastic model parameters at a certain strain rate, combined with viscoelastic model parameters. The hyper-viscoelastic cumulative strain energy and stress–strain models, which were developed with the proposed viscoelastic model, demonstrated high accuracy in predicting material behavior with the strain rate effect of elastomeric PU or similar materials.

AB - Non-linearity, loading rate, as well as temperature and pressure dependency present major challenges in the investigation of properties, particularly the mechanical properties of elastomeric polymers. Recently, material and structural engineers have focused on investigating the mechanical behavior of hyper-elastic materials under varying strain rate conditions. In addition, they have been developing constitutive models to define the non-linear behavior of these materials, combined with the strain rate effect, which simulates behavior under different loading conditions. In this study, a new viscoelastic model is proposed to simulate the variation in the mechanical properties of elastomeric materials. Hyper-viscoelastic constitutive models were also developed by modifying existing hyper-elastic models (Mooney–Rivlin and Ogden) with existing viscoplastic models (Cowper–Symonds and Johnson–Cook) and the proposed viscoelastic model. The proposed models were verified through experimental results by investigating the uniaxial tensile behavior of an elastomeric polyurethane (PU) sample under varying low strain rate regimes (0.001 s−1–0.1 s−1). The proposed viscoelastic model exhibited the best correlation to present the enhancement of mechanical properties under varying strain rate conditions compared with the Cowper–Symonds and Johnson–Cook models. The proposed hyper-viscoelastic models could be used to predict material behavior using only one set of hyper-elastic model parameters at a certain strain rate, combined with viscoelastic model parameters. The hyper-viscoelastic cumulative strain energy and stress–strain models, which were developed with the proposed viscoelastic model, demonstrated high accuracy in predicting material behavior with the strain rate effect of elastomeric PU or similar materials.

KW - Hyper-viscoelastic constitutive models

KW - Hyperelasticity

KW - Polyurethane

KW - Viscoelasticity

UR - http://www.scopus.com/inward/record.url?scp=85075192242&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85075192242&partnerID=8YFLogxK

U2 - 10.1016/j.conbuildmat.2019.117417

DO - 10.1016/j.conbuildmat.2019.117417

M3 - Article

AN - SCOPUS:85075192242

VL - 236

JO - Construction and Building Materials

JF - Construction and Building Materials

SN - 0950-0618

M1 - 117417

ER -