圧縮の軸荷重を受ける棒の曲げ固有振動数算出における境界条件の一補正法

概要

論文の詳細を見る
A method is proposed to correct the boundary condition in the calculation of natural frequencies of the bending vibration of an axially compressed bar that is compressed by a fiat anvil of the testing machine at its rounded end. In this method it is assumed that when the axial load is small, the boundary condition can be approximated by the simple support since the contact area is small and that when the load is increased the boundary condition approaches the fixed support since the contact area increases due to elastic deformation. The result of the calculation for a bar that is fixed at one end and is in contact with the anvil at the other rounded end shows a good agreement with that of the experiment. It is suggested that this method can be used to explain the change in the first-mode natural frequency of a bar lightly compressed at its flat end with increases in the load.
社団法人日本機械学会の論文
1988-10-25