以矩形复合平板为对象，根据弹性薄板理论，确定复合板的等效弹性常数，导出复合平板的弯曲振动方程；并利用表观弹性法，建立了振子共振频率的简单解析表达式。由于计算方法简单，所以这种方法可供科研及工程设计人员参考 Based on the theory of elastic thin plate, the equivalent elastic constants of the composite plate are determined and the bending vibration equation of the composite plate is deduced. Using the apparent elastic method, a simple analytic expression of the resonant frequency of the vibrator is established. As the calculation method is simple, so this method can be used for scientific research and engineering designers reference