For example, a water tank under hydrostatic pressure with the edges simply supported at the top and fixed at the bottom has been calculated.
以顶边简支底边固定承受静水压力的板结构水池为例，进行了分析计算。
The critical load and natural frequency of rhombus plates with simply supported at all edges are calculated.
作为算例计算了四边简支菱形板的自振频率和临界载荷。
When a plate is simply supported at four edges, it can be solved by double sine sery method to get each proper frequency.
当板的四边为简支时可用双正弦级数解法来求得各阶固有频率。
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