A viscoelastic‐viscoplastic model with non associative plasticity for the modelling of bonded joints at high strain rates

A viscoelastic‐viscoplastic model with non associative plasticity for the modelling of bonded... The purpose of this work is to present a constitutive model able to represent the behaviour of rubber-toughened adhesive joints under dynamic loading. A fully coupled viscoelastic–viscoplastic damage model at finite strains developed for mineral filled semi-crystalline polymer is identified for an epoxy adhesive. The parameters of the model are identified from experimental tests undertaken on bulk material in compression and tension at several loading speeds. In order to validate the accuracy of the model to represent bonded joints, a specific dynamic Arcan device is used. Experimental tests on this apparatus are carried out for tensile, shear and mixed tensile/shear loadings at 1mm/s, 10mm/s and 100mm/s. A very good agreement between experimental and numerical results is obtained for a large strain rate range and for various stress states. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png International Journal of Adhesion and Adhesives Elsevier

A viscoelastic‐viscoplastic model with non associative plasticity for the modelling of bonded joints at high strain rates

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Publisher
Elsevier
Copyright
Copyright © 2016 Elsevier Ltd
ISSN
0143-7496
D.O.I.
10.1016/j.ijadhadh.2016.07.015
Publisher site
See Article on Publisher Site

Abstract

The purpose of this work is to present a constitutive model able to represent the behaviour of rubber-toughened adhesive joints under dynamic loading. A fully coupled viscoelastic–viscoplastic damage model at finite strains developed for mineral filled semi-crystalline polymer is identified for an epoxy adhesive. The parameters of the model are identified from experimental tests undertaken on bulk material in compression and tension at several loading speeds. In order to validate the accuracy of the model to represent bonded joints, a specific dynamic Arcan device is used. Experimental tests on this apparatus are carried out for tensile, shear and mixed tensile/shear loadings at 1mm/s, 10mm/s and 100mm/s. A very good agreement between experimental and numerical results is obtained for a large strain rate range and for various stress states.

Journal

International Journal of Adhesion and AdhesivesElsevier

Published: Oct 1, 2016

References

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