球殼の横振動固有週期の略算

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タイトル別名
  • Approximate Evaluation of Natural Frequencies for Lateral Vibrations of Non Shallow Spherical Shells
  • 球殻の横振動固有週期の略算
  • キュウカラ ノ ヨコ シンドウ コユウ シュウキ ノ リャクザン

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The object of the paper is to give formulas for approximately evaluating natural freqencies of lateral vibrations of edge-supported spherical shells, which are essential in aseismatic design of tanks, pressure vessels and containing buidings. From restricting the argument to the rigid body displacements-a translations and a rotation which constitute the most part of lateral displacement, resulted simple formulas for natural periods of vibration by static analysis of spring constants. Comparison of the rigid body displacement with static displacement curve, from which the former was extracted, suggests that the formulas give fairly good results. Formulas are given for shells whose edges are clamped or pin-supported, and are presented cuves of natural periods of steel spherical shells for variety of dimentions.

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