J-Integral Prediction for Semi-Elliptical Surface Cracks in Round Bars Subjected to Torsion Moment

Abstract:

This paper presents a numerical investigation on semi-elliptical surface cracks in round bars subjected to mode III loadings. Lack of information can be found in open literature regarding to the J-integral solution especially the surface crack subjected to mode III loadings. Therefore, this work investigates and analyzes crack behavior using J-integral approach. On the other hand, a mathematical model is also developed to predict the J-integral along the crack front. It is found that the J-integral can be used to predict well along the crack front. However, the prediction is strongly influenced by whether the material is elastic-or plastic dominated region.

• Periodical: Applied Mechanics and Materials (Volume 699)
• Pages: 295-299
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.699.295
• Online since: November 2014
• Authors: Al Emran Ismail*, Ahmad Kamal Ariffin, S. Abdullah, Mariyam Jameelah Ghazali, Abdul Latif Mohd Tobi
• Keywords: Ĵ-Integral, Mode III Loading, Stress Intensity Factor, Surface Crack

References

[1] A. E Ismail, A. K Ariffin, S. Abdullah, M. J Ghazali, Stress intensity factors for surface cracks in round bar under single and combined loadings, Meccanica. 47 (2012) 1141–1156.

DOI: 10.1007/s11012-011-9500-7

[2] J. Toribio, J. C Matos, B. Gonzalez, J. Escuadra, Numerical modeling of crack shape evolution for surface flaws in round bars under tensile loading, Eng Fail Anal. 16(2) (2009) 618–630.

DOI: 10.1016/j.engfailanal.2008.02.014

[3] Y. Murakami, H. Tsuru, Stress intensity factor handbook, Pergamon, New York, (1987).

[4] A. Carpinteri, S. Vantadori, Sickle-shaped cracks in metallic round bars under cyclic eccentric axial loading, Int J Fatigue. 31(4) (2009) 759–765.

DOI: 10.1016/j.ijfatigue.2008.03.006

[5] A. E Ismail, A. K Ariffin, S. Abdullah, M. J Ghazali, Offset crack propagation analysis under mixed-mode loadings, Int J Automot Technol. 12(2) (2011) 225–232.

DOI: 10.1007/s12239-011-0027-7

[6] A.E. Ismail, A.K. Ariffin, S. Abdullah and M.J. Ghazali, R. Daud, M. AbdulRazzaq, Stress intensity factors under combined bending and torsion moments, J. of Zhejiang University-SCIENCE A. 13 (2012) 1-8.

DOI: 10.1631/jzus.a1100040

[7] Y. Lei, A review of limit load solutions for cylinders with axial cracks and development of new solutions, Int. J. Pres. Ves. Pip. 85 (2008) 825-850.

DOI: 10.1016/j.ijpvp.2008.09.001

[8] C. S Shin, C. Q Cai, Experimental and finite element analyses on stress intensity factors of an elliptical surface crack in a circular shaft under tension and bending, Int J Fract. 129(3) (2004) 239–264.

DOI: 10.1023/b:frac.0000047784.23236.7d

[9] A. E Ismail, A. K Ariffin, S. Abdullah, M. J Ghazali, R. Daud, Mode III stress intensity factors of surface crack in round bars, Adv Mater Res. 214 (2011) 192–196.

DOI: 10.4028/www.scientific.net/amr.214.192

[10] A. E Ismail, A. K Ariffin, S. Abdullah, M. J Ghazali, R. Daud, Elastic-Plastic Analysis of Surface Crack in Round Bars under Torsion, Key Engineering Materials, 462-463 (2011) 651-656.

DOI: 10.4028/www.scientific.net/kem.462-463.651