Stress intensity factors for surface cracks in round bars under combined bending and torsion loadings

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Stress intensity factor (SIF) calculations for semi-elliptical surface crack in round bars subjected to a combined loading using a three-dimensional finite element (FE) model was numerically presented. Different crack aspect ratio, a/b ranging between 0.0 to 1.2 and relative crack depth, a/D is in between 0.1 to 0.6 were considered. Firstly, the SIF obtained from bending loading (Mode I) was compared with available literature results to validate the proposed model. Since the loading is non-symmetrical, the whole finite element model was constructed and both bending and torsion loading were remotely applied to the model. The effective SIF technique was used to combine the individual SIF. Then, the combined SIFs were compared with the SIF obtained using finite element analysis (FEA) under combined loadings. It was found that the calculated SIF using the effective SIF technique was higher than the combined SIF predicted numerically using FEA. The discrepancies may due to the interaction of crack surfaces especially under the loading of pure torsion.

Original languageEnglish
Pages (from-to)827-832
Number of pages6
JournalInternational Review of Mechanical Engineering
Volume4
Issue number7
Publication statusPublished - Nov 2010

Fingerprint

Stress intensity factors
Torsional stress
Cracks
Finite element method
Aspect ratio

Keywords

  • ANSYS
  • Combined loadings
  • Finite element analysis
  • Stress intensity factor

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

@article{fba5d26a74964f69bb2af450c0c916d2,
title = "Stress intensity factors for surface cracks in round bars under combined bending and torsion loadings",
abstract = "Stress intensity factor (SIF) calculations for semi-elliptical surface crack in round bars subjected to a combined loading using a three-dimensional finite element (FE) model was numerically presented. Different crack aspect ratio, a/b ranging between 0.0 to 1.2 and relative crack depth, a/D is in between 0.1 to 0.6 were considered. Firstly, the SIF obtained from bending loading (Mode I) was compared with available literature results to validate the proposed model. Since the loading is non-symmetrical, the whole finite element model was constructed and both bending and torsion loading were remotely applied to the model. The effective SIF technique was used to combine the individual SIF. Then, the combined SIFs were compared with the SIF obtained using finite element analysis (FEA) under combined loadings. It was found that the calculated SIF using the effective SIF technique was higher than the combined SIF predicted numerically using FEA. The discrepancies may due to the interaction of crack surfaces especially under the loading of pure torsion.",
keywords = "ANSYS, Combined loadings, Finite element analysis, Stress intensity factor",
author = "Ismail, {A. E.} and {Mohd Ihsan}, {Ahmad Kamal Ariffin} and Shahrum Abdullah and Ghazali, {Mariyam Jameelah}",
year = "2010",
month = "11",
language = "English",
volume = "4",
pages = "827--832",
journal = "International Review of Mechanical Engineering",
issn = "1970-8734",
publisher = "Praise Worthy Prize",
number = "7",

}

TY - JOUR

T1 - Stress intensity factors for surface cracks in round bars under combined bending and torsion loadings

AU - Ismail, A. E.

AU - Mohd Ihsan, Ahmad Kamal Ariffin

AU - Abdullah, Shahrum

AU - Ghazali, Mariyam Jameelah

PY - 2010/11

Y1 - 2010/11

N2 - Stress intensity factor (SIF) calculations for semi-elliptical surface crack in round bars subjected to a combined loading using a three-dimensional finite element (FE) model was numerically presented. Different crack aspect ratio, a/b ranging between 0.0 to 1.2 and relative crack depth, a/D is in between 0.1 to 0.6 were considered. Firstly, the SIF obtained from bending loading (Mode I) was compared with available literature results to validate the proposed model. Since the loading is non-symmetrical, the whole finite element model was constructed and both bending and torsion loading were remotely applied to the model. The effective SIF technique was used to combine the individual SIF. Then, the combined SIFs were compared with the SIF obtained using finite element analysis (FEA) under combined loadings. It was found that the calculated SIF using the effective SIF technique was higher than the combined SIF predicted numerically using FEA. The discrepancies may due to the interaction of crack surfaces especially under the loading of pure torsion.

AB - Stress intensity factor (SIF) calculations for semi-elliptical surface crack in round bars subjected to a combined loading using a three-dimensional finite element (FE) model was numerically presented. Different crack aspect ratio, a/b ranging between 0.0 to 1.2 and relative crack depth, a/D is in between 0.1 to 0.6 were considered. Firstly, the SIF obtained from bending loading (Mode I) was compared with available literature results to validate the proposed model. Since the loading is non-symmetrical, the whole finite element model was constructed and both bending and torsion loading were remotely applied to the model. The effective SIF technique was used to combine the individual SIF. Then, the combined SIFs were compared with the SIF obtained using finite element analysis (FEA) under combined loadings. It was found that the calculated SIF using the effective SIF technique was higher than the combined SIF predicted numerically using FEA. The discrepancies may due to the interaction of crack surfaces especially under the loading of pure torsion.

KW - ANSYS

KW - Combined loadings

KW - Finite element analysis

KW - Stress intensity factor

UR - http://www.scopus.com/inward/record.url?scp=79951710931&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79951710931&partnerID=8YFLogxK

M3 - Article

VL - 4

SP - 827

EP - 832

JO - International Review of Mechanical Engineering

JF - International Review of Mechanical Engineering

SN - 1970-8734

IS - 7

ER -