25 in analysis assumptions and modeling notes for

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Unformatted text preview: de 1–394 ANSYS Verification Manual . ANSYS Release 9.0 . 002114 . © SAS IP, Inc. VM176: Frequency Response of Electrical Input Admittance Overview Reference: Y. Kagawa, T. Yamabuchi, “Finite Element Simulation of a Composite Piezoelectric Ultrasonic Transducer”, IEEE Trans. Sonics and Ultrasonics, Vol. SU-2 No. 2, 1979, pg. 81. Analysis Type(s): Full Harmonic Response Analysis (ANTYPE = 3) Element Type(s): 3-D Coupled-Field Solid Elements (SOLID5) Input Listing: vm176.dat Test Case A composite piezoelectric transducer is made of a piezoceramic (NEPEC 6), aluminum, and an adhesive layer. Electrical terminals are attached to electroded surfaces of the piezoceramic where a potential V is applied. Determine the terminal input admittance Y over a frequency range spanning the first natural frequency. Figure 176.1 Piezoelectric Transducer Problem Sketch Material Properties For aluminum: E = 7.03 x 1010 N/m ρ = 2690 kg/m3 υ = 0.345 For adhesive: E = 10 x 109 N/m2 ρ = 1700 kg/m3 υ = 0.38 For NEPEC 6: See Constitutive Matrices Geometric Properties ha = 15.275 x 10-3 m hn = 5 x 10-3...
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This note was uploaded on 12/09/2010 for the course DEPARTMENT E301 taught by Professor Kulasinghe during the Spring '09 term at University of Peradeniya.

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