arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 2402.02793math.AP
收藏

导电性问题中多边形夹杂物的形状导数

On the shape derivative of polygonal inclusions in the conductivity problem

Martin Hanke

AI总结:

本文研究导电性问题中多边形夹杂物的形状导数,证明其仍可由特定非齐次传输问题刻画,但因顶点奇异性不再属于 $H^1$。

摘要:

我们考虑一个均匀物体中含有不同但已知电导率的夹杂物的导电性问题。我们关注的是相应的形状导数,即对应的静电势关于夹杂物形状的导数。对于光滑夹杂物,已知形状导数是某个特定非齐次传输问题的解。我们证明,当夹杂物为多边形区域时,形状导数的这一刻画仍然成立,但由于多边形顶点处的奇异性,此时形状导数不再属于 $H^1$。

英文摘要:

We consider the conductivity problem for a homogeneous body with an inclusion of a different, but known, conductivity. Our interest concerns the associated shape derivative, i.e., the derivative of the corresponding electrostatic potential with respect to the shape of the inclusion. For a smooth inclusion it is known that the shape derivative is the solution of a specific inhomogeneous transmission problem. We show that this characterization of the shape derivative is also valid when the inclusion is a polygonal domain, but due to singularities at the vertices of the polygon, the shape derivative fails to belong to $H^1$ in this case.

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。

↑