Effect of crack faces opening mechanisms on the combined stress intensity factors under bending and torsion moments

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4 Citations (Scopus)

Abstract

This paper presents a numerical investigation on the effect of crack faces opening mechanisms on the combined stress intensity factors for surface cracks in round bars. A full finite element model was constructed due to the non-symmetrical analysis involved. Bending and torsion moments were remotely applied to the model and the stress intensity factors were calculated along the crack front. The stress intensity factors were also combined explicitly through the equivalent stress intensity factor method and then compared with the results obtained from the finite element analysis under combined loadings. There were high discrepancies between the results especially when the bending moment dominated the stress condition. From the deformed mesh observation, it was found that the discrepancies were due to the differences in crack face interaction mechanisms and thus affecting the combined stress intensity factor calculations.

Original languageEnglish
Pages (from-to)3232-3238
Number of pages7
JournalInternational Review on Modelling and Simulations
Volume4
Issue number6
Publication statusPublished - 2011

Fingerprint

Stress Intensity Factor
Stress intensity factors
Torsional stress
Torsion
Crack
Face
Moment
Cracks
Discrepancy
Surface Crack
Bending moments
Numerical Investigation
Finite Element Model
Mesh
Finite Element
Finite element method
Interaction

Keywords

  • Combined stress intensity factors
  • Finite element analysis
  • Surface cracks

ASJC Scopus subject areas

  • Modelling and Simulation
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Chemical Engineering(all)

Cite this

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title = "Effect of crack faces opening mechanisms on the combined stress intensity factors under bending and torsion moments",
abstract = "This paper presents a numerical investigation on the effect of crack faces opening mechanisms on the combined stress intensity factors for surface cracks in round bars. A full finite element model was constructed due to the non-symmetrical analysis involved. Bending and torsion moments were remotely applied to the model and the stress intensity factors were calculated along the crack front. The stress intensity factors were also combined explicitly through the equivalent stress intensity factor method and then compared with the results obtained from the finite element analysis under combined loadings. There were high discrepancies between the results especially when the bending moment dominated the stress condition. From the deformed mesh observation, it was found that the discrepancies were due to the differences in crack face interaction mechanisms and thus affecting the combined stress intensity factor calculations.",
keywords = "Combined stress intensity factors, Finite element analysis, Surface cracks",
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AU - Ismail, Al Emran

AU - Mohd Ihsan, Ahmad Kamal Ariffin

AU - Abdullah, Shahrum

AU - Ghazali, Mariyam Jameelah

PY - 2011

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N2 - This paper presents a numerical investigation on the effect of crack faces opening mechanisms on the combined stress intensity factors for surface cracks in round bars. A full finite element model was constructed due to the non-symmetrical analysis involved. Bending and torsion moments were remotely applied to the model and the stress intensity factors were calculated along the crack front. The stress intensity factors were also combined explicitly through the equivalent stress intensity factor method and then compared with the results obtained from the finite element analysis under combined loadings. There were high discrepancies between the results especially when the bending moment dominated the stress condition. From the deformed mesh observation, it was found that the discrepancies were due to the differences in crack face interaction mechanisms and thus affecting the combined stress intensity factor calculations.

AB - This paper presents a numerical investigation on the effect of crack faces opening mechanisms on the combined stress intensity factors for surface cracks in round bars. A full finite element model was constructed due to the non-symmetrical analysis involved. Bending and torsion moments were remotely applied to the model and the stress intensity factors were calculated along the crack front. The stress intensity factors were also combined explicitly through the equivalent stress intensity factor method and then compared with the results obtained from the finite element analysis under combined loadings. There were high discrepancies between the results especially when the bending moment dominated the stress condition. From the deformed mesh observation, it was found that the discrepancies were due to the differences in crack face interaction mechanisms and thus affecting the combined stress intensity factor calculations.

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