A Novel Approach to Elastodynamics: I. The Two-Dimensional Case

Details A Novel Approach to Elastodynamics: I. The Two-Dimensional Case A Novel Approach to Elastodynamics: I. The Two-Dimensional Case

2010-10-14

arxiv.org/abs/1010.2941v1

Mathematics

Analysis of PDEs

Scientific paper

We introduce a new approach to constructing analytic solutions of the linear PDEs describing elastodynamics. This approach is illustrated for the case of a homogeneous isotropic half-plane body satisfying arbitrary initial conditions and Lamb's boundary conditions. A particular case of this problem, namely the case of homogeneous initial conditions, was first solved by Lamb using the Fourier-Laplace transform. The solution of the general problem can also be expressed in terms of the Fourier transform, but this representation involves transforms of unknown boundary values. This necessitates the formulation and solution of a cumbersome auxiliary problem, which expresses the unknown boundary values in terms of the Laplace transform of the given boundary data. The new approach, which is applicable to arbitrary initial and boundary conditions, bypasses the above auxiliary problem and expresses the solutions directly in terms of the given initial and boundary data.

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