Calculation of Dynamic Stress Intensity Factor by the Boundary Element - Laplace Transform Method

Abstract:

Using the Laplace transform and freezing time variable, the problem in the time domain into the frequency domain to solve the problem. The establishment of a crack unit model in the frequency domain, and the boundary integral equation and discrete form containing the crack unit has been deduced. While using Durbin algorithm suitable for transient dynamic response of the inverse Laplace transform, the amount of stress intensity factor of a set of transformation parameters corresponding to the frequency domain into a time domain to obtain the dynamic stress intensity factor of time curve, and calculate the stress intensity factor compared to the boundary finite element method has a Laplace transform high precision, easy to save CPU time and data preparation features, we recommend using this method to calculate the dynamic stress intensity factor.

• Periodical: Advanced Materials Research (Volumes 989-994)
• Pages: 1825-1828
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.989-994.1825
• Online since: July 2014
• Authors: Wei Zhang*
• Keywords: Boundary Element Method (BEM), Dynamic Stress Intensity Factor, Laplace Transform

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