水下压电/弹性材料复合层球壳声波反射的数值研究  

A Numerical Study on the Acoustic Reflections from a Submerged Piezoelectric/Elastic Bilaminar Sphere Shell

作　　者：杨昆[1] 赵汉中[1] 袁丽芸[1] 

机构地区：[1]华中科技大学力学系,武汉430074

出　　处：《噪声与振动控制》2004年第3期12-14,共3页Noise and Vibration Control

摘　　要：采用有限单元计算软件ANSYS对无限水域中压电/弹性材料复合层球壳的声波反射进行了数值研究。研究表明,在压电层中加载适当的电压可以在一个圆锥形的流体区域内有效地减小壳体对于外来声波的反射,并且有可能完全消除任意选定空间点上的反射。The acoustic reflections from a submerged piezoelectric/elastic bilaminar sphere shell are studied by applying of the computational software ANSYS in which the finite element technique is used.The numerical results show that an appropriate applied voltage potential across the piezoelectric shell has the effect of suppressing the reflected pressure from the sphere shell in a cone fluid field,and able to completely cancel the reflections at any chosen field points.

关 键 词：声学 压电材料 球壳 声波反射 

分 类 号：O422.3[理学—声学]