Dynamic Buckling of Elastic Bars : 2nd Report, The Case of High Velocity Impact

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概要

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• This paper treats a simply supported column with an initial deflection, which has on end struck by a mass along the axial line at higher impact velocities than in the previous study. The numerical solutions agree with the experimental results. Conclusions are as follows: (1) In the case of the high velocity impact, the column is buckled locally near the impact end. After that, this buckled region spreads towards the supported end. (2) The axial force begins to decrease rapidly by this local buckling, and later a large tensile axial force caused by the effect of unloading wave is observed near the supported end. (3) The higher the impact velocity is, the shorter the buckled wavelength becomes, and then the fracture point approaches the impact end. (4) The phenomena abovementioned are due to the influence of axial force.

• 一般社団法人日本機械学会の論文

著者

• Hayashi Takuo

  Faculty Of Engineering Science Osaka University

• SANO Yukio

  Facully of Engineering Science, Osaka University

• Sano Yukio

  Facully Of Engineering Science Osaka University

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