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Contributions to the modelling of acoustic and elastic wave propagation in large-scale domains with boundary element methods

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Academic year: 2021

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Figure 2: My research concerns mainly three levels of improvement of fast BEM solvers: the optimization of the number of DOFs (in red), the data-sparse representation of the system matrix (in yellow) and the acceleration of the system solution (in green).
Figure 1.3: Diffraction of an oblique incident plane P-wave by a semi-ellipsoidal canyon: hor- hor-izontal (left) and vertical (right) computed displacement on canyon surface and meshed part of free surface (normalized frequency κ s a/π = 2); from [14]
Figure 1.6: Vertically incident P-wave in a viscoelastic half-space containing a semi-spherical soft basin: contour maps of |u z | and |u y | at κ (1) P R/π = 2 for three levels of damping in both media (β 1 = β 2 = β): β = 0 (purely elastic case), β = 0.0
Figure 1.7: Amplification at the top of the 3D basin (5% damping in the basin and 0.5%
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