Riemann–Hilbert Approach to the Elastodynamic Equation: Part I
Riemann–Hilbert Approach to the Elastodynamic Equation: Part I
复制标题
弹动力方程的黎曼-希尔伯特方法:第一部分
DOI:
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发表时间:
2011
期刊:
影响因子:
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通讯作者:
J. Kaplunov
中科院分区:
文献类型:
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作者:
A. Its;E. Its;J. Kaplunov
We develop the Riemann–Hilbert (RH) approach to scattering problems in elastic media. The approach is based on the RH method introduced in the 1990s by Fokas (A unified approach to boundary value problems, CBMS-SIAM, 2008) for studying boundary problems for linear and integrable nonlinear PDEs. A suitable Lax pair formulation of the elastodynamic equation is obtained. The integral representations derived from this Lax pair are applied to Rayleigh wave propagation in an elastic half space and quarter space. The latter problem is reduced to the analysis of a certain underdetermined RH problem. We show that the problem can be re-formulated as a well-determined vector Riemann–Hilbert problem with a shift posed on a torus.