Use of velocity potentials in the definition of absorbing boundaries for FDTD analysis of elastic wave fields

Acoustical Science and Technology

Volumn 24, Issue 6, 2003, Pages 415-418

  Sato, Masahiro ^a  

^a AKITA UNIVERSITY   (Japan)

Author keywords

Absorbing boundary; Elastic wave; FDTD method; Velocity potential

Indexed keywords

ACOUSTIC IMPEDANCE; ALGORITHMS; APPROXIMATION THEORY; ATTENUATION; BOUNDARY CONDITIONS; FINITE DIFFERENCE METHOD; LAPLACE TRANSFORMS; MATHEMATICAL MODELS; MAXIMUM LIKELIHOOD ESTIMATION; SHEAR WAVES; TIME DOMAIN ANALYSIS; VELOCITY MEASUREMENT; WAVE EQUATIONS;

ABSORBING BOUNDARIES; LONGITUDINAL WAVES; VELOCITY POTENTIALS;

ACOUSTIC WAVE PROPAGATION;

EID: 0346276906     PISSN: 13463969     EISSN: None     Source Type: Journal    
DOI: 10.1250/ast.24.415     Document Type: Article

References (7)

1. C. J. Randall, "Absorbing boundary condition for the elastic wave equation," Geophysics, 53, 611-624 (1988).
2. C. J. Randall, "Absorbing boundary condition for the elastic wave equation: velocity-stress formulation," Geophysics, 54, 1141-1152 (1989).
3. R. L. Higdon, "Absorbing boundary conditions for acoustic and elastic waves in stratified media," J. Comp. Phys., 101, 386-418 (1992).
4. M. Sato and Y. Takahata, "Expression of the elastic wave fields by a scalar and a vector velocity potentials," J. Acoust. Soc. Jpn. (J), 56, 741-745 (2000).
5. M. Sato, Y. Takahata, M. Tahara and I. Sakagami, "Expression of contour vibration modes of a square plate by scalar and vector potentials, " Acoust. Sci. & Tech., 23, 346-349 (2002).
6. B. A. Auld, Acoustic Fields and Waves in Solids, I (John Wiley & Sons, Inc., New York, 1973).
7. T. Uno, Finite Difference Time Domain Method for Electromagnetic Field and Antenna Analyses (Corona Publishing Co., Tokyo, 1998), Chap. 2, p. 80.