Qualitative Properties of Vibration about Nonhomogeneous Circular Membrane with Axisymmetrical Mass

Some qualitative properties are discussed about the transverse vibration of nonhomogene- ous circular membrane with axisymmetric mass distribution. The oscillating property of nonhomoge-neous circular membrane was expounded. The distinct property of frequency spectrum and the distribution law about the node circle of modal function are also proved.