Evaluation of J Integral for Interacting Twin Collinear Through-Wall Cracks in a Plate under Tension

Abstract:

The interaction behavior of twin collinear through-wall cracks in tension loaded plate under elastic-plastic condition is investigated by the finite element method (FEM). The fracture parameter J integral for interacting cracks is calculated and compared to the J integral for a single crack the same size. In this way, the interaction factor of cracks under elastic-plastic condition is defined. This interaction factor is compared to the results of analytical solution of the interaction factor under linear elastic condition. The results show that interaction factor of cracks under elastic-plastic condition is higher than interaction factor of same cracks under linear elastic condition. Also the interaction effect of cracks under elastic-plastic condition is influenced not only by the crack configurations but also by the material properties, especially the strain hardening exponent n.

• Periodical: Key Engineering Materials (Volume 665)
• Pages: 97-100
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.665.97
• Online since: September 2015
• Authors: Marko Katinic, Drazan Kozak, Ivan Samardzic, Antun Stoic, Zeljko Ivandic, Zlatko Tonkovic
• Keywords: Elastic-Plastic Material Behavior, Interaction, J Integral, Multiple Cracks

References

[1] T.H. Leek, I.C. Howard, in: Int. J. Pres. Vess. Piping, 68, p.181–201, (1996).

[2] W.A. Moussa, R. Bell, C.L. Tan, in: Int. J. Pres. Vess. Piping, 76, p.135–145, (1999).

[3] R. Sethuraman, G. Reddy, I.T. Ilango, in: Int. J. Pres. Vess. Piping, 80, p.843–859, (2003).

[4] A. Carpinteri, R. Brighenti, S. Vantadori, in: Engng. Fract. Mech., 71, p.485–499, (2004).

[5] Y.Z. Chen, in: ASME Appl. Mech. Rev., 60, p.172–194, (2007).

[6] M. Kamaya, in: ASME J. Pres. Vess. Technol., 130, 011406-1, (2008).

[7] BS7910 Guidance on methods of assessing the acceptability of flaws in metallic structures, London (UK): British Standard Institutions; (2005).

[8] R6 Assessment of the integrity of structures containing defects, revision 4. Gloucester: British Energy Generation Ltd.; (2006).

[9] 579-1/ASME FFS-1. Fitness-for-service, section 9. American Society of Mechanical Engineers; (2007).

[10] J.M. Kim, N.S. Huh, in: Nuclear Engineering and Technology, Vol. 42, No. 6, pp.680-689, (2010).

[11] F. Biglari, K.M. Nikbin, I.W. Goodall, G.A. Webster, in: Int. J. Pres. Vess. Piping, 80, p.565–571, (2003).

[12] ABAQUS User's Manual. Version 6. 10, Hibbitt, Karlsson and Sorensen Inc., (2010).

[13] D.P. Rooke, D.J. Cartwright, in: Procurement Executive, Ministry of Defence, London (1974).

[14] D.P. Rooke, D.J. Cartwright, in: H. M. S. O., London (1976).