On the Free Boundary Conditions for a Dynamic Shell Model Based on Intrinsic Differential Geometry.

Autor: Cagnol, John, Lebiedzik, Catherine
Předmět:
Zdroj: Applicable Analysis; Jun2004, Vol. 83 Issue 6, p607-633, 27p
Abstrakt: The mathematical theory behind the modeling of shells is a crucial issue in many engineering problems. Here, the authors derive the free boundary conditions and associated strong form of a dynamic shallow Kirchhoff shell model based on the intrinsic geometry methods of Michael Delfour and Jean-Paul Zolésio. This model relies on the oriented distance function which describes the geometry. This is an extension of the work done in [J. Cagnol, I. Lasiecka, C. Lebiedzik and J.-P. Zolésio (2002). Uniform stability in structural acoustic models with flexible curved walls. J. Differential Equation , 186 (1), 88-121.], where the model was derived for clamped boundary conditions only. In the current article, manipulations with the model result in a cleaner form where the displacement of the shell and shell boundary is written explicitly in terms of standard tangential operators. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index