We prove global existence of small-amplitude solutions of quasilinear Dirichletwave equations outside of star-shaped obstacles in (3+1)-dimensions. We use a variation of the conformal method of Christodoulou. Since the image of the spacetime obstacle is not static in the Einstein diamond, our result
Fourier solution of the wave equation for a star-like-shaped vibrating membrane
β Scribed by Diego Caratelli; Pierpaolo Natalini; Paolo E. Ricci
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- English
- Weight
- 984 KB
- Volume
- 59
- Category
- Article
- ISSN
- 0898-1221
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β¦ Synopsis
The Fourier solution of the wave equation for a circular vibrating membrane is generalized to a star-like-shaped structure. We show that the classical solution can be used in this more general case, provided that a suitable change of variables in the spherical co-ordinate system is performed.
π SIMILAR VOLUMES
## Abstract Let __D__ β β^__n__^ be a bounded domain with piecewiseβsmooth boundary, and __q__(__x__,__t__) a smooth function on __D__ Γ [0, __T__]. Consider the timeβlike Cauchy problem magnified image magnified image Given __g__, __h__ for which the equation has a solution, we show how to approxi
A triangular Fourier p-element for the analysis of membrane vibrations is presented. The element's transverse displacement is written in terms of dimensionless area co-ordinates and is described by three linear shape functions plus a variable number of trigonometric shape functions. The three nodal