On the Modelling of Creep Fracture and Fatigue

P. Kauppila; Reijo Kouhia; J. Ojanperä; T. Saksala; T. Sorjonen

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

Paper Titles

Applicability of the Critical Energy Release Rate for Predicting the Growth of a Crack in Nanoscale Materials Applying the Strain Gradient Elasticity Theory
p.185

Bone Remodeling Algorithm Incorporating Various Quantities as Mechanical Stimulus and Assuming Initial Microcrack in Bone
p.189

A Numerical Model for the Simulation of Fatigue Induced Damage Onset and Evolution
p.194

Numerical Modelling of a Chevron Notched Bend Specimen - Plane Model
p.198

On the Modelling of Creep Fracture and Fatigue
p.202

Application of the Williams Expansion near a Bi-Material Interface
p.206

The Influence of Prefabricated Crack with Bias Angle on the Material’s Fracture Toughness
p.210

Shear Mode Stress Intensity Factors for Serrated Crack Fronts
p.214

Numerical Computation of Stress Intensity Factors in Ultrasonic Very-High-Cycle Fatigue Tests
p.218

HomeKey Engineering MaterialsKey Engineering Materials Vol. 754On the Modelling of Creep Fracture and Fatigue

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.

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Periodical:

Key Engineering Materials (Volume 754)

Pages:

202-205

DOI:

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

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Online since:

September 2017

Authors:

P. Kauppila*, Reijo Kouhia, J. Ojanperä, T. Saksala, T. Sorjonen

Keywords:

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

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