On the Kachanov-Rabotnov continuum damage model

Authors

  • Harm Askes The University of Sheffield
  • Juha Hartikainen Tampere University
  • Kari Kolari VTT Technical Research Centre of Finland Ltd
  • Reijo Kouhia Tampere University https://orcid.org/0000-0002-3378-5612
  • Timo Saksala Tampere University
  • Jani Vilppo Tampere University

DOI:

https://doi.org/10.23998/rm.82528

Keywords:

continuum damage mechanics, free energy, dissipation potential, dispersion analysis, finite element analysis

Abstract

In this paper two partially complementary formulations of the simple phenomenological Kachanov-Rabotnov continuum damage constitutive model are presented. The models are based on a consistent thermodynamic formulation using proper expressions for the Helmholtz free energy or its complementary form of the dissipation potential. Basic features of the models are discussed and the behaviour in tensile test and creep problems is demonstrated.

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Published

2020-03-30

Issue

Vol. 53 No. 2 (2020)

Section

Professor Emeritus Tapio Salmi in Memoriam

License

Copyright (c) 2020 Harm Askes, Juha Hartikainen, Kari Kolari, Reijo Kouhia, Timo Saksala, Jani Vilppo

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

Askes, H., Hartikainen, J., Kolari, K., Kouhia, R., Saksala, T., & Vilppo, J. (2020). On the Kachanov-Rabotnov continuum damage model. Journal of Structural Mechanics, 53(2), 125-144. https://doi.org/10.23998/rm.82528