On the Modelling of Creep Fracture and Fatigue

Pasi  Kauppila; Reijo Kouhia; Juha Ojanperä; Timo Saksala; Timo Sorjonen

doi:10.4028/www.scientific.net/KEM.754.202

On the Modelling of Creep Fracture and Fatigue

Pasi Kauppila, Reijo Kouhia, Juha Ojanperä, Timo Saksala, Timo Sorjonen

Tutkimustuotos: Artikkeli › Scientific › vertaisarvioitu

Abstrakti

In this paper, a thermodynamically consistent formulation for the analysis of creep fracture and fatigue is presented. The model is described via two potential functions, the specific Helmholtz free energy and the complementary dissipation potential. Isotropic damage variable is used to describe the degradation of the material. In addition, the use of creep parameters, like Monkman-Grant and Larson-Miller parameters are discussed and their relation to the proposed model are derived. Developed model is implemented as a user subroutine to the commercial finite element code ANSYS and an example case of practical interest is shown.

Alkuperäiskieli	Englanti
Sivut	202-205
Sivumäärä	4
Julkaisu	Key Engineering Materials
Vuosikerta	754
DOI - pysyväislinkit	https://doi.org/10.4028/www.scientific.net/KEM.754.202
Tila	Julkaistu - 5 syysk. 2017
OKM-julkaisutyyppi	A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

Julkaisufoorumi-taso

Jufo-taso 1

Pääsy asiakirjaan

10.4028/www.scientific.net/KEM.754.202

Siteeraa tätä

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title = "On the Modelling of Creep Fracture and Fatigue",

abstract = "In this paper, a thermodynamically consistent formulation for the analysis of creep fracture and fatigue is presented. The model is described via two potential functions, the specific Helmholtz free energy and the complementary dissipation potential. Isotropic damage variable is used to describe the degradation of the material. In addition, the use of creep parameters, like Monkman-Grant and Larson-Miller parameters are discussed and their relation to the proposed model are derived. Developed model is implemented as a user subroutine to the commercial finite element code ANSYS and an example case of practical interest is shown. ",

keywords = " Creep Fatigue, Damage Mechanics, Larson-Miller Parameter, Monkman-Grant Parameter",

author = "Pasi Kauppila and Reijo Kouhia and Juha Ojanper{\"a} and Timo Saksala and Timo Sorjonen",

year = "2017",

month = sep,

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doi = "10.4028/www.scientific.net/KEM.754.202",

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T1 - On the Modelling of Creep Fracture and Fatigue

AU - Kauppila, Pasi

AU - Kouhia, Reijo

AU - Ojanperä, Juha

AU - Saksala, Timo

AU - Sorjonen, Timo

PY - 2017/9/5

Y1 - 2017/9/5

N2 - In this paper, a thermodynamically consistent formulation for the analysis of creep fracture and fatigue is presented. The model is described via two potential functions, the specific Helmholtz free energy and the complementary dissipation potential. Isotropic damage variable is used to describe the degradation of the material. In addition, the use of creep parameters, like Monkman-Grant and Larson-Miller parameters are discussed and their relation to the proposed model are derived. Developed model is implemented as a user subroutine to the commercial finite element code ANSYS and an example case of practical interest is shown.

AB - In this paper, a thermodynamically consistent formulation for the analysis of creep fracture and fatigue is presented. The model is described via two potential functions, the specific Helmholtz free energy and the complementary dissipation potential. Isotropic damage variable is used to describe the degradation of the material. In addition, the use of creep parameters, like Monkman-Grant and Larson-Miller parameters are discussed and their relation to the proposed model are derived. Developed model is implemented as a user subroutine to the commercial finite element code ANSYS and an example case of practical interest is shown.

KW - Creep Fatigue, Damage Mechanics, Larson-Miller Parameter, Monkman-Grant Parameter

U2 - 10.4028/www.scientific.net/KEM.754.202

DO - 10.4028/www.scientific.net/KEM.754.202

M3 - Article

SN - 1013-9826

VL - 754

SP - 202

EP - 205

JO - Key Engineering Materials

JF - Key Engineering Materials

ER -

On the Modelling of Creep Fracture and Fatigue

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