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Extension of the Günter Derivatives to the Lipschitz Domains and Application to the Boundary Potentials of Elastic Waves. / Bendali, A.; Tordeux, S.; Volchkov, Yu M.
в: Journal of Applied Mechanics and Technical Physics, Том 61, № 1, 01.01.2020, стр. 139-156.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Extension of the Günter Derivatives to the Lipschitz Domains and Application to the Boundary Potentials of Elastic Waves
AU - Bendali, A.
AU - Tordeux, S.
AU - Volchkov, Yu M.
PY - 2020/1/1
Y1 - 2020/1/1
N2 - Regularization techniques for the trace and the traction of elastic waves potentials previously built for domains of the class C2 are extended to the Lipschitz case. In particular, this yields an elementary way to establish the mapping properties of elastic wave potentials from those of the scalar Helmholtz equation without resorting to the more advanced theory for elliptic systems in the Lipschitz domains. Scalar Günter derivatives of a function defined on the boundary of a three-dimensional domain are expressed as components (or their opposites) of the tangential vector rotational ∇∂Ωu × n of this function in the canonical orthonormal basis of the ambient space. This, in particular, implies that these derivatives define bounded operators from Hs to Hs−1 (0 ≤ s ≤ 1) on the boundary of the Lipschitz domain and can easily be implemented in boundary element codes. Representations of the Guünter operator and potentials of single and double layers of elastic waves in the two-dimensional case are provided.
AB - Regularization techniques for the trace and the traction of elastic waves potentials previously built for domains of the class C2 are extended to the Lipschitz case. In particular, this yields an elementary way to establish the mapping properties of elastic wave potentials from those of the scalar Helmholtz equation without resorting to the more advanced theory for elliptic systems in the Lipschitz domains. Scalar Günter derivatives of a function defined on the boundary of a three-dimensional domain are expressed as components (or their opposites) of the tangential vector rotational ∇∂Ωu × n of this function in the canonical orthonormal basis of the ambient space. This, in particular, implies that these derivatives define bounded operators from Hs to Hs−1 (0 ≤ s ≤ 1) on the boundary of the Lipschitz domain and can easily be implemented in boundary element codes. Representations of the Guünter operator and potentials of single and double layers of elastic waves in the two-dimensional case are provided.
KW - boundary integral operators
KW - elastic waves
KW - Günter derivatives
KW - layer potentials
KW - Lipschitz domains
KW - Gunter derivatives
KW - INTEGRAL-EQUATIONS
KW - MAXWELL
KW - FORMULATION
KW - RADIATION
KW - SCATTERING
UR - http://www.scopus.com/inward/record.url?scp=85088919557&partnerID=8YFLogxK
U2 - 10.1134/S0021894420010150
DO - 10.1134/S0021894420010150
M3 - Article
AN - SCOPUS:85088919557
VL - 61
SP - 139
EP - 156
JO - Journal of Applied Mechanics and Technical Physics
JF - Journal of Applied Mechanics and Technical Physics
SN - 0021-8944
IS - 1
ER -
ID: 24957451