Physics
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012geoji.188..371c&link_type=abstract
Geophysical Journal International, Volume 188, Issue 1, pp. 371-380.
Physics
Numerical Approximation And Analysis, Wave Scattering And Diffraction, Wave Propagation, Fractures And Faults
Scientific paper
A boundary element method (BEM) combined with a linear slip boundary condition is proposed to calculate SH wave scattering from fractures in the frequency domain. The linear slip boundary condition was proposed by Schoenberg to model elastic wave propagation through an imperfectly bonded interface, where the traction cross the interface is continuous and displacement is discontinuous. Here, we demonstrate how to simulate SH wave scattering from fractures by applying the BEM and this linear slip boundary condition. We compare the displacement discontinuity across a traction-free crack calculated using the BEM and an analytical model to show the validity and accuracy of our approach. Comparisons between results obtained using our model with those obtained using a finite difference method are also performed and very good matches between these two methods are found. An example of SH wave scattering from three curved, crossing fractures is also given.
Burns Daniel
Chen Tianrun
Fang Xinding
Fehler Michael
Shang Xuefeng
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