Experimental and numerical investigation of fatigue of thin tensile specimen

Bomidi, John A. R.; Weinzapfel, Nick; Wang, Chinpei; Sadeghi, Farshid

doi:10.1016/j.ijfatigue.2012.05.013

Cited by 29 publications

(50 citation statements)

References 30 publications

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“…This formulation of damage has been extensively used to characterize tensile fatigue, 28,29 torsion fatigue, 52 and rolling contact fatigue. This formulation of damage has been extensively used to characterize tensile fatigue, 28,29 torsion fatigue, 52 and rolling contact fatigue.…”

Section: Fatigue Damage Formulationmentioning

confidence: 99%

“…The experimental data from Bomidi et al 29 for tensile fatigue in 304 grade stainless steel was used as the baseline for the modelling parameters (geometry, loading parameters and material constants). The experimental data from Bomidi et al 29 for tensile fatigue in 304 grade stainless steel was used as the baseline for the modelling parameters (geometry, loading parameters and material constants).…”

Section: Simulation Of Tensile Fatiguementioning

confidence: 99%

“…[28][29][30] This definition is found to be successful in characterizing fatigue life to a reasonable level of accuracy but may be limited in predicting the variability in life due to equal damage developing in all directions. [28][29][30] This definition is found to be successful in characterizing fatigue life to a reasonable level of accuracy but may be limited in predicting the variability in life due to equal damage developing in all directions.…”

Section: Introductionmentioning

confidence: 99%

“…[28][29][30] This definition is found to be successful in characterizing fatigue life to a reasonable level of accuracy but may be limited in predicting the variability in life due to equal damage developing in all directions. The fatigue life prediction obtained from the two-dimensional fatigue damage model were compared with empirical observations of fatigue failure from Bomidi et al 29 To demonstrate the applicability of the model to conduct fatigue life variability studies, 30 numerically generated specimens with different microstructural topology were created and subjected to cyclic loading conditions to estimate their fatigue lives and the associated dispersion due to randomness in the material microstructure. Two-dimensional Voronoi tessellations were used for explicit representation of microstructure.…”

Section: Introductionmentioning

confidence: 99%

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An anisotropic damage model for tensile fatigue

Vijay

Sadeghi

2018

Fatigue Fract Eng Mat Struct

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Fatigue damage in materials is considered to be the effect of material degradation, and the dispersion in fatigue life is attributed to variability in microstructure. This paper presents a numerical model to simulate fatigue damage evolution using continuum damage mechanics to characterize material degradation. An explicit microstructure topology representation is achieved using Voronoi tessellations. Unlike conventional models which use a scalar approximation for damage, this model treats the damage variable as an anisotropic tensor. The model is used to simulate tensile fatigue failure in thin steel specimen. The fatigue life estimations from the model compares well with published experimental results. The results predict a high variability in fatigue life that is characteristic of metals and alloys, as compared with the existing isotropic damage models available in the literature. The model was also used to study the influence of material inhomogeneity on fatigue life dispersion.

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Section: Fatigue Damage Formulationmentioning

confidence: 99%

Section: Simulation Of Tensile Fatiguementioning

confidence: 99%

“…[28][29][30] This definition is found to be successful in characterizing fatigue life to a reasonable level of accuracy but may be limited in predicting the variability in life due to equal damage developing in all directions. [28][29][30] This definition is found to be successful in characterizing fatigue life to a reasonable level of accuracy but may be limited in predicting the variability in life due to equal damage developing in all directions.…”

Section: Introductionmentioning

confidence: 99%

“…[28][29][30] This definition is found to be successful in characterizing fatigue life to a reasonable level of accuracy but may be limited in predicting the variability in life due to equal damage developing in all directions. The fatigue life prediction obtained from the two-dimensional fatigue damage model were compared with empirical observations of fatigue failure from Bomidi et al 29 To demonstrate the applicability of the model to conduct fatigue life variability studies, 30 numerically generated specimens with different microstructural topology were created and subjected to cyclic loading conditions to estimate their fatigue lives and the associated dispersion due to randomness in the material microstructure. Two-dimensional Voronoi tessellations were used for explicit representation of microstructure.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

An anisotropic damage model for tensile fatigue

Vijay

Sadeghi

2018

Fatigue Fract Eng Mat Struct

Self Cite

View full text Add to dashboard Cite

show abstract

“…The current model uses a stress-based approach employing continuum damage mechanics to explain this phenomenon. Damage mechanics has been widely used to investigate behavior of the material due to fatigue loading [45][46][47]. In this approach, the material degradation due to cyclic fatigue loading is simulated by updating the constitutive relationship.…”

Section: Theorymentioning

confidence: 99%