然后由叠加原理将环扇形板的自由振动问题转化为积分方程特征值问题；
Then the eigenvalue problem of free vibration of annular sector plates is transformed into the eigenvalue problem of integral equation by using superposition theorem.
对大型储罐拱顶扇形板个别计算公式进行探讨，列举计算实例，提出看法。
In this article, the discussion of several equations commonly used in calculating spherical arc plate of vault in large storage tank was carried out.
由动力学的一般解，导出了扇形板和扇形环板在广义弹性简支和广义刚性滑动边界条件下自由振动的频率方程和振型；
From these dynamic solutions, frequency and mode shapes of sectorial plate and sectorial annular plate under boundary conditions of GSS and GRS are derived.
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