A Numerical Analysis for Cracks Emanating from a Quarter-Spherical Cavity on the Edge of an Elastic Body

Author:

Yan Long Hai1,Liu Bao Liang1

Affiliation:

1. Heilongjiang Institute of Science and Technology

Abstract

This note is specifically concerned with cracks emanating from a quarter-spherical cavity on the edge in an elastic body (see Fig.1) by using finite element method. The numerical results show that the existence of the cavity has a shielding effect of the corner crack. In addition, it is found that the effect of boundaries parallel to the crack on the SIFs is obvious when.H/R≤3

Publisher

Trans Tech Publications, Ltd.

Subject

General Engineering

Reference11 articles.

1. Newman, J.C. Jr., An improved method of collocation for the stress analysis of cracked plates with various shaped boundaries, NASA TN, D-6376, 1971, 1-45.

2. Smith, F. W. and Kullgren, T. E. theoretical and Experimental Analysis of Surface Cracks Emanating from Fastener Holes., AFFDL-TR-76-104, Air Force Flight Dynamics Laboratory, Feb. (1977).

3. Heckmer, J. L. and Bloom, J. M., Determination of Stress Intensity Factors for the Corner-Cracked Hole Using the Isoparametric Singularity Element, International Journal of Fracture, Oct. (1977).

4. Raju, I. S. and Newman, J. C., Jr., Fracture Mechanics (11th Conference), ASTM STP 677, American Society for Testing and Materials, 1979, pp.411-430.

5. Murakami Y. A method of stress intensity factor calculation for the crack emanating from an arbitrarily shaped hole or the crack in the vicinity of an arbitrarily shape hole. Trans. Japan. Soc. Mech. Engrs 1978; 44(378): 423-32.

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