作为算例计算了四边简支菱形板的自振频率和临界载荷。
The critical load and natural frequency of rhombus plates with simply supported at all edges are calculated.
在预测管壳式换热器的振动时，准确地计算换热管的自振频率是非常重要的。
Calculating natural frequencies of the heat exchanger tube is an essential step in predicting its potential for flow induced vibration failure.
本文运用三维有限元方法离散水体，研究了箱形术体的自振频率及动水压力振型。
In this paper, the natural frequencies and modes of box water body researched by using three-dimensional finite element method.
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