長方形平板内を伝ぱする弾性波の板端衝撃による実験解析

概要

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Interpretation of each contribution of a propagating elastic pulse is described in relation to the time record waveform. The experiment of mechanical impact with a tiny hard plastic ball on the end of rectangular plate was conducted to get the waveforms. The waveform shows good coincidence between the pulse locations and the calculated arrival times. Identification of each propagating path in a plate is made with recorded waveforms, and so does estimation of the arrival times to be taken to travel along the path with energy propagation velocity. Some of the remarkable features of pulse propagations are also described. In long time records, the waveforms are mainly composed of the edge modes emanating from each corner of the plate. The contributions of the reflected flexural waves, as well as those of edge waves, can be clearly detected in the real waveform records.
一般社団法人日本機械学会の論文
1986-07-25