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.
研究了椭圆外无穷扇形区域上调和方程边值问题的自然边界元法。
In this paper, we investigate the natural boundary element method for the boundary value problem of harmonic equation in an exterior elliptic infinite sector domain.
并得到了平衡问题的扇形板和扇形环板在两种边界条件下的位移、电势和磁势，应力、电位移和磁感应强度的三维精确解。
The three-dimensional exact solutions of the displacement, electric potential, magnetic potential, stress, electric displacement and magnetic induction of equilibrium problems are also obtained.
通过给出振型函数和相应的边界条件，半解析地确定了螺旋管扇形结构的各阶频率和振型。
The frequency and analytic vibration models can be semi analytically calculated by vibration function and boundry condition.
通过给出振型函数和相应的边界条件，半解析地确定了螺旋管扇形结构的各阶频率和振型。
The frequency and analytic vibration models can be semi analytically calculated by vibration function and boundry condition.
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