On the Kachanov-Rabotnov continuum damage model

Harm Askes; Juha Hartikainen; Kari Kolari; Reijo Kouhia; Timo Saksala; Jani Vilppo

doi:10.23998/rm.82528

On the Kachanov-Rabotnov continuum damage model

Harm Askes, Juha Hartikainen, Kari Kolari, Reijo Kouhia, Timo Saksala, Jani Vilppo

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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.

Original language	English
Pages (from-to)	125-144
Number of pages	20
Journal	Rakenteiden Mekaniikka
Volume	53
Issue number	2
DOIs	https://doi.org/10.23998/rm.82528
Publication status	Published - 30 Mar 2020
MoE publication type	A1 Journal article-refereed

Keywords

Continuum damage mechanics
Dispersion analysis
Dissipation potential
Finite element analysis
Free energy

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AU - Vilppo, Jani

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KW - Finite element analysis

KW - Free energy

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On the Kachanov-Rabotnov continuum damage model

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Keywords

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