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TECHNICAL PAPERS

Response of Finite Cracks in Orthotropic Materials due to Concentrated Impact Shear Loads

J. Appl. Mech 66(2), 485-491 (Oct 25, 1999) (7 pages) doi:10.1115/1.2791073 History: Received June 18, 1998; Revised January 11, 1999

Abstract

The elastodynamic response of an infinite orthotropic material with a finite crack under concentrated in-plane shear loads is examined. A solution for the stress intensity factor history around the crack tips is found. Laplace and Fourier transforms are employed to solve the equations of motion leading to a Fredholm integral equation on the Laplace transform domain. The dynamic stress intensity factor history can be computed by numerical Laplace transform inversion of the solution of the Fredholm equation. Numerical values of the dynamic stress intensity factor history for several example materials are obtained. The results differ from mode I in that there is heavy dependence upon the material constants. This solution can be used as a Green's function to solve dynamic problems involving finite cracks and in-plane shear loading.

COPYRIGHT © 1999 by The American Society of Mechanical Engineers
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