円筒シェル-集中付加マス系の地電波によるパラメトリック励振 : 第2報,解析

概要

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An upright stainless steel circular cylinder with an attached mass at midlength was excited seismically in the horizontal direction using a shaking table to observe parametric excitation (1st Report). In the present report, the parametric excitation of the test cylinder with an attached mass is analyzed. Translational motion of the attached mass in the radial direction or rocking motion of the attached mass about the vertical axis is expanded using the free vibration modes of the circular cylinder without the attached mass. Parametric excitation terms are obtained as the products of in-plane stress due to excitation acceleration and the bending strain of rocking motion or translational motion. Modal equations with respect to the translational motion and the rocking motion are derived which incorporate the parametric excitation terms. Analytical results are compared with experimental results, and show reasonable agreement.
社団法人日本機械学会の論文
1993-12-25