周辺が点固定された正方形板の振動

概要

論文の詳細を見る
The natural frequency and the mode of vibration of a plate with multiple fixed points on edges are computed by the finite element method (FEM) and are observed experimentally. The frequency of each mode for the plate is found by the extrapolation method, and the frequency obtained by this method is highly accurate. The natural frequency of the plate depends on the number of fixed points. When the number of fixed points is small, the influence that the number of fixed points exerts on the frequency is very large. As the number of fixed points becomes large, the frequency of a plate approaches the value of a square plate with four fixed edges. The frequency of a plate with several fixed points which do not exist on the corners is always higher than that of a plate with the same number of fixed points containing the four corners, but as the number of fixed points becomes large, the difference in frequency becomes small. In the square plate in which the fixed points exist slightly inside the edges, the frequency of the square plate increases a little; however, the mode shape of vibration does not change appreciably.
一般社団法人日本機械学会の論文
1992-09-25