arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2201.00580math.APmath.OC
收藏

动态边界条件下wave equation源项的识别

Identification of source terms in wave equation with dynamic boundary conditions

S. E. Chorfi, G. El Guermai, L. Maniar, W. Zouhair

摘要:

本文研究了一类波动方程的双曲反问题。它包括从位移的最终超定中确定一些强迫项。首先,研究了Tikhonov泛函的Fréchet可微性,通过求解伴随问题得到了梯度公式.然后证明了梯度的Lipschitz连续性。进一步讨论了极小化问题的存在性和唯一性。最后,利用共轭梯度法进行了内波力重构的数值实验。

英文摘要:

This paper studies an inverse hyperbolic problem for the wave equation with dynamic boundary conditions. It consists of determining some forcing terms from the final overdetermination of the displacement. First, the Fréchet differentiability of the Tikhonov functional is studied, and a gradient formula is obtained via the solution of an associated adjoint problem. Then, the Lipschitz continuity of the gradient is proved. Furthermore, the existence and the uniqueness for the minimization problem are discussed. Finally, some numerical experiments for the reconstruction of an internal wave force are implemented via a conjugate gradient algorithm.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑