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Point-force excitation of an elastic plate with n embedded cavity

Anders Boström (Institutionen för tillämpad mekanik, Dynamik) ; Anders Karlsson
Journal of applied mechanics (0021-8936). Vol. 52 (1985), p. 937-942.
[Artikel, refereegranskad vetenskaplig]

The propagation of elastic waves in a thick plate containing an embedded cavity is considered. The full elastodynamic equations are solved and both time-harmonic and pulse propagation are treated. The time-harmonic problem is solved using the null field approach, a method whose main characteristics are surface integral representations and expansions in spherical and planar vector wave functions. To obtain the pulse response, a Fourier integral in frequency is employed. Numerical examples are given showing the fields in both the time and frequency domains at a few selectd locations on the plate surfaces when the plate is excited by a point force. Only low and intermediate frequencies are included and the pulse width is thus somewhat larger than the dimensions of the spheroidal cavity.



Denna post skapades 2013-12-28. Senast ändrad 2015-03-30.
CPL Pubid: 190541

 

Institutioner (Chalmers)

Institutionen för tillämpad mekanik, Dynamik

Ämnesområden

Teknisk mekanik

Chalmers infrastruktur