垂直方向に振動している矩形剛板より放射される定常振動

概要

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This paper investigates the dynamic response of rectangular foundation-soil system for the case that the ground is regarded as homogeneous, isotropic half-space with internal dissipation. First, the approximate expressions of the transfer function between a vibration source and the surface wave are introduced. The expression for normal direction has been compared with the experimental results, and it has been shown that the expression can be applicable over the range 2. 5 wavelengths away from the source. Next, the experimental results have been presented, and the following results have been obtained. The relative amplitude of the wave radiated from square source coincides with the one from circular source which has the same area with the square source. Radiated wave from rectangular source has directivity away from the transition point, and the directivity for the direction perpendicular to the longer side is more intensive than the direction perpendicular side of the shorter side. The relative amplitude for the direction 45 degree from the side of the source roughly coincides with the one from circular source which has the same area as the rectangular source.
社団法人日本音響学会の論文
1983-12-25