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초록

A spectral element method(SEM) is introduced for the vibration analysis of the rectangular plates under distributed dynamic loads. The distributed dynamic load is discretized into a sequence of equivalent line loads. The plate is then considered as a connection of two spectral plate elements with the joint node line along which the equivalent line load acts. The spatial coordinate dependence of each equivalent line load is then removed through the spatial Fourier transformation so that the plate (2-D) problem becomes a simplified equivalent beam-like problems. Thus the remaining solution procedures should be the same as used for the beam problems. Numerical tests show that the present SEM provides very accurate solution compared to the finite element solutions.