Title :
Piezoelectric ceramic stacks for underwater transducers
Author :
Nishamol, P.A. ; Ebenezer, D.D.
Author_Institution :
Naval Phys. & Oceanogr. Lab., Kochi, India
Abstract :
An analytical model is presented of a stack of annular rings used in underwater Tonpilz and Flextensional transducers to radiate high acoustic power. The length of each ring is much less than the average diameter. The model is based on exact solutions to exact piezoelectric governing equations for rings. Boundary and continuity conditions are satisfied in an average sense. It is shown that the computed resonance frequencies are more accurate than those obtained using a one-dimensional model by comparing them with those obtained using ATILA - a finite element package.
Keywords :
finite element analysis; piezoceramics; piezoelectric transducers; underwater sound; ATILA; acoustic power; annular rings; boundary conditions; continuity conditions; finite element package; flextensional transducers; piezoelectric ceramic stacks; resonance frequency; underwater tonpilz; underwater transducers; Analytical models; Computational modeling; Finite element analysis; Mathematical model; Resonant frequency; Stress; Transducers; Axisymmetric model; Barrel-Stave transducer; axially polarized rings; input electrical admittance; length mode resonance;
Conference_Titel :
Underwater Technology (UT), 2015 IEEE
Conference_Location :
Chennai
Print_ISBN :
978-1-4799-8299-8
DOI :
10.1109/UT.2015.7108217
