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Hyperelastic constants from a modified hardness test using energy balance obtained from FE-analysis

Austrell, Per Erik LU and Ahadi, A. (2013) 8th European Conference on Constitutive Models for Rubbers (ECCMR) In Constitutive Models for Rubber VIII p.225-231
Abstract
In order to simplify the hyperelastic characterisation of rubber materials, an extension of the standard hardness test is proposed. A number of indentation depths are chosen for the hardness test and the indentation forces for these depths are recorded. By this modification, hyperelastic constants can be derived from the test, providing more information from the test by a small extra effort. Equivalence of the work done by the external force of the indenter and the strain energy stored in the rubber material, together with displacement control and the incompressible nature of rubber, reduce the problem of determining the hyperelastic constants to finding a solution to a system of equations with these constants as unknowns. The method is... (More)
In order to simplify the hyperelastic characterisation of rubber materials, an extension of the standard hardness test is proposed. A number of indentation depths are chosen for the hardness test and the indentation forces for these depths are recorded. By this modification, hyperelastic constants can be derived from the test, providing more information from the test by a small extra effort. Equivalence of the work done by the external force of the indenter and the strain energy stored in the rubber material, together with displacement control and the incompressible nature of rubber, reduce the problem of determining the hyperelastic constants to finding a solution to a system of equations with these constants as unknowns. The method is theoretically evaluated using finite element analysis, using hyperelastic constants from three real rubber materials with hardness from 40 to 78 IRHD. Hyperelastic constants with good accuracy are obtained using this simple method. (Less)
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
Constitutive Models for Rubber VIII
pages
225 - 231
publisher
Taylor & Francis
conference name
8th European Conference on Constitutive Models for Rubbers (ECCMR)
external identifiers
  • WOS:000328115500034
  • Scopus:84878578221
language
English
LU publication?
yes
id
2eeb10c5-aece-40b6-9b1b-dea8d977d18c (old id 4272565)
date added to LUP
2014-02-12 13:53:31
date last changed
2017-01-15 04:31:20
@inproceedings{2eeb10c5-aece-40b6-9b1b-dea8d977d18c,
  abstract     = {In order to simplify the hyperelastic characterisation of rubber materials, an extension of the standard hardness test is proposed. A number of indentation depths are chosen for the hardness test and the indentation forces for these depths are recorded. By this modification, hyperelastic constants can be derived from the test, providing more information from the test by a small extra effort. Equivalence of the work done by the external force of the indenter and the strain energy stored in the rubber material, together with displacement control and the incompressible nature of rubber, reduce the problem of determining the hyperelastic constants to finding a solution to a system of equations with these constants as unknowns. The method is theoretically evaluated using finite element analysis, using hyperelastic constants from three real rubber materials with hardness from 40 to 78 IRHD. Hyperelastic constants with good accuracy are obtained using this simple method.},
  author       = {Austrell, Per Erik and Ahadi, A.},
  booktitle    = {Constitutive Models for Rubber VIII},
  language     = {eng},
  pages        = {225--231},
  publisher    = {Taylor & Francis},
  title        = {Hyperelastic constants from a modified hardness test using energy balance obtained from FE-analysis},
  year         = {2013},
}