不連続断面を有する帯板中の応力パルスの伝搬特性

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  • Propagation characteristics of stress pulse in strip plate with discontinuous cross section
  • フレンゾク ダンメン オ ユウスル オビイタチュウ ノ オウリョク パルス ノ

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Some experiments concerning the propagation characteristics of stress pulses in strip plate with a discontinuous cross section were made for purpose to investigate about the propagation of sound wave in various constructions. Reflection phenomena depending on the pulse duration time and the ratio of cross section of incident and transmitted media were observed by means of semiconductor strain gauge. Reflection coefficient of pulse decreased with increasing of the duration time and the ratio of the cross section. Moreover the propagation behavior of stress pulse passing through a discontinuous cross section in strip plate were observed by dynamic photoelasticity method. The transmitted pulse passing through the discontinuous cross section propagated spherically. Maximum stress by super-position of incident pulse and reflected one was produced at the position of about 5mm in incident side from the discontinuous position. Propagation velocity of spherical stress pulse in transmitted media increased with increasing of the ratio of cross section of strip plate.

収録刊行物

  • 日本音響学会誌

    日本音響学会誌 41 (9), 593-597, 1985

    一般社団法人 日本音響学会

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