发表机构
Nankai University (NKU); Indian Institute of Technology, Ropar(南开大学; 印度理工学院洛帕尔分校)
机构由 AI 辅助整理,请以论文原文为准。AI 中文总结
本文针对二维有界无牵引力障碍物的时谐弹性散射逆问题,利用Navier方程反射原理与弹性场唯一延拓性,证明单个入射平面波下连通多边形障碍物可由远场模式唯一确定。
AI 中文摘要
本文针对二维有界无牵引力障碍物的时谐弹性散射逆问题,建立了唯一性结论:对于单个入射平面波,连通多边形障碍物可由测得的远场模式唯一确定。该分析基于无牵引力边界条件下Navier方程的反射原理及弹性场的唯一延拓性质。
英文摘要
In this article, we establish uniqueness in the inverse problem of time-harmonic elastic scattering from a bounded, traction-free obstacle in two dimensions. For a single incident plane wave, it is proved that a connected polygonal obstacle is uniquely determined by the measured far-field pattern. The analysis is based on a reflection principle for the Navier equation under traction-free boundary conditions and unique continuation of elastic fields.