Point-force excitation of an elastic plate with n embedded cavity
Artikel i vetenskaplig tidskrift, 1985

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.

Författare

Anders E Boström

Chalmers, Tillämpad mekanik, Dynamik

Anders Karlsson

Journal of Applied Mechanics, Transactions ASME

0021-8936 (ISSN)

Vol. 52 937-942

Ämneskategorier

Maskinteknik

DOI

10.1115/1.3169172