Scattering relations for point-generated dyadic fields in two-dimensional linear elasticity
Authors:
C. Athanasiadis, V. Sevroglou and I. G. Stratis
Journal:
Quart. Appl. Math. 64 (2006), 695-710
MSC (2000):
Primary 74J20; Secondary 74B05
DOI:
https://doi.org/10.1090/S0033-569X-06-01041-0
Published electronically:
October 31, 2006
MathSciNet review:
2284466
Full-text PDF Free Access
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Abstract: The problem of scattering of elastic waves by a bounded obstacle in two-dimensional linear elasticity is considered. The scattering problems are presented in a dyadic form. An incident dyadic field generated by a point source is disturbed by a rigid body, a cavity, or a penetrable obstacle. General scattering theorems are proved, relating the far-field patterns due to scattering of waves from a point source set up in either of two different locations. The most general reciprocity theorem is established, and mixed scattering relations are also proved. Finally, a relation between the incident and the scattered wave which refers to the mechanism of energy transfer of the scatterer, the so-called optical theorem, is established.
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Arens1 T. Arens, Existence of solution in elastic wave scattering by unbounded rough surfaces. Math. Methods Appl. Sci. 25 (2002), 507–528.
Arens2 T. Arens, Linear sampling methods for 2D inverse elastic wave scattering. Inverse Problems 17 (2001), 1445–1464.
Arens3 T. Arens, Uniqueness for elastic wave scattering by rough surfaces. SIAM J. Math. Anal. 33 (2001), 461–476.
AtMaSt C. Athanasiadis, P. A. Martin and I. G. Stratis, On spherical-wave scattering by a spherical scatterer and related near-field inverse problems. IMA J. Appl. Math. 66 (2001), 539–549.
AtMaSt2 C. Athanasiadis, P. A. Martin, A. Spyropoulos and I. G. Stratis, Scattering relations for point sources: Acoustic and electromagnetic waves. J. Math. Phys. 43 (2002), 5683–5697.
AtMaSt3 C. Athanasiadis, P. A. Martin and I. G. Stratis, On the scattering of point-generated electromagnetic waves by a perfectly conducting sphere, and related near-field inverse problems. Z. Angew. Math. Mech. 83 (2003), 129–136.
AtBe C. Athanasiadis and N. Berketis, Scattering relations for point-source excitation in chiral media. Math. Methods Appl. Sci. 29 (2006), 27–48.
Menahem A. Ben-Menahem and S. J. Singh, Seismic Waves and Sources, Springer-Verlag, New York, 1981.
CK1 D. Colton, Partial Differential Equations, Random House/Birkhäuser Mathematics Series, New York, 1988.
CK3 D. Colton and R. Kress, Inverse Acoustic and Electromagnetic Scattering Theory, Springer-Verlag, Berlin, 1992.
Dassios3 G. Dassios, K. Kiriaki and D. Polyzos, On the scattering amplitudes for elastic waves. Z. Angew. Math. Phys. 38 (1987), 856–873.
Dassios2 G. Dassios, K. Kiriaki and D. Polyzos, Scattering theorems for complete dyadic fields. Int. J. Eng. Sci. 33 (1995), 269–277.
Kleinman G. Dassios and R. Kleinman, Low Frequency Scattering, Clarendon Press, Oxford, 2000.
Dassios1 G. Dassios, Energy functionals in scattering theory and inversion of low frequency moments. In “Advanced Course in Wavefield Inversion”, International Centre for Mechanical Sciences 398, ed. A. Wirgin; Udine, (2000), 1–58.
Dassios4 G. Dassios and K. Karveli, Dyadic scattering by small obstacles: The rigid sphere. Quart. J. Mech. Appl. Math. 54 (2001), 371–374.
Dassios5 G. Dassios and K. Karveli, Scattering of a spherical dyadic field by a small rigid sphere. Mathematics and Mechanics of Solids. 7 (2002), 3–40.
Dassios6 G. Dassios, K. Karveli, S. Kattis and N. Kathreptas, The disturbance of a plane dyadic wave by a small spherical cavity. Int. J. Eng. Science 40 (2002), 1975–2000.
Kupradze V. D. Kupradze, Potential Methods in the Theory of Elasticity, Israel Program for Scientific Translations, Jerusalem, 1965.
Martin P. A. Martin, On the scattering of elastic waves by an elastic inclusion in two dimensions. Quart. J. Mech. Appl. Math. 43 (1990), 275–291.
Feshbach P. M. Morse and H. Feshbach, Methods of Theoretical Physics, Vols. I, II, McGraw-Hill, New York, 1953.
Payton1 R. G. Payton, Two-dimensional anisotropic elastic waves emanating from a point source. Proc. Cambridge Philos. Soc. 70 (1971), 191–210.
Payton2 R. G. Payton, Two dimensional wave front shape induced in a homogeneously strained elastic body by a point perturbing body force. Arch. Rational Mech. Anal. 32 (1969), 311–330.
PSevroglou G. Pelekanos and V. Sevroglou, Inverse scattering by penetrable objects in two-dimensional elastodynamics. J. Comput. Appl. Math. 151 (2003), 129–140.
Poisson O. Poisson, Calculs des pôles de résonance associés à la diffraction d’ondes acoustiques et élastiques en dimension 2, Thèse, Université de Paris IX (Paris–Dauphine), Paris, 1992.
Potthast R. Potthast, Point Sources and Multipoles in Inverse Scattering Theory, Chapman and Hall/CRC, Boca Raton, FL, 2001.
Sevro V. Sevroglou and G. Pelekanos, An inversion algorithm in two-dimensional elasticity. J. Math. Anal. Appl. 263 (2001), 277–293.
Sevroglou3 V. Sevroglou and G. Pelekanos. Two-dimensional elastic Herglotz functions and their applications in inverse scattering. Journal of Elasticity 68 (2002), 123–144.
Sevroglou V. Sevroglou, The far-field operator for penetrable and absorbing obstacles in 2D inverse elastic scattering. Inverse Problems 21 (2005), 717–738.
Tai C. T. Tai, Dyadic Green Functions in Electromagnetic Theory, IEEE Press Series on Electromagnetic Waves, Piscataway, NJ, 1994.
Twersky V. Twersky, Multiple scattering of electromagnetic waves by arbitary configurations. J. Math. Eng. Sci. 8 (1967), 589–610.
Wang C.-Y. Wang, Elastic fields produced by a point source in solids of general anisotropy. J. Engrg. Math. 32 (1997), 41–52.
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Additional Information
C. Athanasiadis
Affiliation:
Department of Mathematics, University of Athens, Panepistimiopolis, GR 157 84 Athens, Greece
MR Author ID:
602846
Email:
cathan@math.uoa.gr
V. Sevroglou
Affiliation:
Department of Mathematics, University of Ioannina, GR 45110 Ioannina, Greece
Email:
bsevro@cc.uoi.gr
I. G. Stratis
Affiliation:
Department of Mathematics, University of Athens, Panepistimiopolis, GR 157 84 Athens, Greece
Email:
istratis@math.uoa.gr
Keywords:
Dyadic scattering,
point sources,
scattering relations
Received by editor(s):
January 19, 2006
Published electronically:
October 31, 2006
Additional Notes:
The authors acknowledge partial financial support from EPEAEK II (“Pythagoras II” research fellowships, project title “Mathematical Analysis of Wave Propagation in Chiral Electromagnetic and Elastic Media”, University of Athens).
Article copyright:
© Copyright 2006
Brown University
The copyright for this article reverts to public domain 28 years after publication.