DYNAMIC INSTABILITY OF LOCAL VIBRATION OF THE THIN-WALLED MEMBERS UNDER PERIODIC AXIAL LOADS

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  • 周期的軸力を受ける薄肉部材の局部振動の不安定特性
  • シュウキテキ ジクリョク オ ウケル ウスニク ブザイ ノ キョクブ シンドウ

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Abstract

The dynamic instability of local vibration of the simple supported thin-walled members under periodic axial loads is investigated by applying the finite strip method. At first, the analyses of the local buckling and the free vibration of the members are carried out and the characteristics of them are discussed. Secondly, the unstable regions of local vibration of the members under various geometrical parameters are calculated and the effects of the some factors which control the dynamic instability phenomena are clarified. Based on these results, the most efficient dispositions of diaphragm or stiffener are mentioned.

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