J-integral analysis of surface cracks in round bars under bending moments

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

This paper presents a non-linear numerical investigation of surface cracks in round bars under bending moment by using ANSYS finite element analysis (FEA). Due to the symmetrical analysis, only quarter finite element (FE) model was constructed and special attention was given at the crack tip of the cracks. The surface cracks were characterized by the dimensionless crack aspect ratio, a/b = 0.6, 0.8, 1.0 and 1.2, while the dimensionless relative crack depth, a/D = 0.1, 0.2 and 0.3. The square-root singularity of stresses and strains was modeled by shifting the mid-point nodes to the quarter-point locations close to the crack tip. The proposed model was validated with the existing model before any further analysis. The elastic-plastic analysis under remotely applied bending moment was assumed to follow the Ramberg-Osgood relation with n = 5 and 10. J values were determined for all positions along the crack front and then, the limit load was predicted using the J values obtained from FEA through the reference stress method.

Original languageEnglish
Title of host publicationApplied Mechanics and Materials
Pages43-48
Number of pages6
Volume52-54
DOIs
Publication statusPublished - 2011
Event2011 1st International Conference on Mechanical Engineering, ICME 2011 - Phuket
Duration: 3 Apr 20114 Apr 2011

Publication series

NameApplied Mechanics and Materials
Volume52-54
ISSN (Print)16609336
ISSN (Electronic)16627482

Other

Other2011 1st International Conference on Mechanical Engineering, ICME 2011
CityPhuket
Period3/4/114/4/11

Fingerprint

Bending moments
Cracks
Crack tips
Finite element method
Load limits
Aspect ratio
Plastics

Keywords

  • Finite element analysis
  • J-integral
  • Limit load
  • Stress intensity factor
  • Surface cracks

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Ismail, A. E., Mohd Ihsan, A. K. A., Abdullah, S., Ghazali, M. J., & Daud, R. (2011). J-integral analysis of surface cracks in round bars under bending moments. In Applied Mechanics and Materials (Vol. 52-54, pp. 43-48). (Applied Mechanics and Materials; Vol. 52-54). https://doi.org/10.4028/www.scientific.net/AMM.52-54.43

J-integral analysis of surface cracks in round bars under bending moments. / Ismail, A. Emran; Mohd Ihsan, Ahmad Kamal Ariffin; Abdullah, Shahrum; Ghazali, Mariyam Jameelah; Daud, Ruslizam.

Applied Mechanics and Materials. Vol. 52-54 2011. p. 43-48 (Applied Mechanics and Materials; Vol. 52-54).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Ismail, AE, Mohd Ihsan, AKA, Abdullah, S, Ghazali, MJ & Daud, R 2011, J-integral analysis of surface cracks in round bars under bending moments. in Applied Mechanics and Materials. vol. 52-54, Applied Mechanics and Materials, vol. 52-54, pp. 43-48, 2011 1st International Conference on Mechanical Engineering, ICME 2011, Phuket, 3/4/11. https://doi.org/10.4028/www.scientific.net/AMM.52-54.43
Ismail AE, Mohd Ihsan AKA, Abdullah S, Ghazali MJ, Daud R. J-integral analysis of surface cracks in round bars under bending moments. In Applied Mechanics and Materials. Vol. 52-54. 2011. p. 43-48. (Applied Mechanics and Materials). https://doi.org/10.4028/www.scientific.net/AMM.52-54.43
Ismail, A. Emran ; Mohd Ihsan, Ahmad Kamal Ariffin ; Abdullah, Shahrum ; Ghazali, Mariyam Jameelah ; Daud, Ruslizam. / J-integral analysis of surface cracks in round bars under bending moments. Applied Mechanics and Materials. Vol. 52-54 2011. pp. 43-48 (Applied Mechanics and Materials).
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