NATURAL FREQUENCIES OF SUBMERGED PIEZOCERAMIC HOLLOW SPHERES

• 来源期刊: 力学学报（英文版）
• 年，卷（期）: 2000,（1）
• 页码范围: 55-62
• 页数: 8页
• 语种: 英文

摘要

An exact 3D analysis of free vibration of a piezoceramic hollow sphere submerged in a compressible fluid is presented in this paper.A separation method is adopted to simplify the basic equations for spherically isotropic piezoelasticity.It is shown that there are two independent classes of vibration.The first one is independent of the fluid medium as well as the electric field,while the second is associated with both the fluid parameter and the piezoelectric effect.Exact frequency equations are derived and numerical results are obtained.