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2011
Conference Paper
Titel
Image-based FIT modeling for coupled elastodynamic and acoustic problems
Abstract
This paper presents a numerical time domain modeling of acoustic, elastodynamic, and coupled waves. Our simulation tool is based on the finite integration technique (FIT) and combined with an image-based modeling approach. The FIT is a grid-based spatial discretization method that works in conjunction with a leap-frog type explicit scheme. In our simulation, geometries of targets are determined by a digital image, then the processed pixel or voxel data is directly fed into the wave simulation by the FIT. Here the modeling and simulation of the wave propagation in a concrete material including fluid-solid interactions and a non-contact ultrasonic testing are demonstrated.