Accession Number : ADA185948

Title :   User Manual for ATILA, a Finite-Element Code for Modeling Piezoelectric Transducers.

Descriptive Note : Interim rept. Jul-Aug 87,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s) : Decarpigny, Jean-Noel ; Debus, Jean-Claude

PDF Url : ADA185948

Report Date : Sep 1987

Pagination or Media Count : 131

Abstract : This manual for the user of the finite-element code ATILA provides instruction for entering information and running the code on a VAX computer. The manual does not include the code. The finite element code ATILA has been specifically developed to aid the design of piezoelectric devices, mainly for sonar applications. Thus, it is able to perform the model analyses of both axisymmetrical and fully three-dimensional piezoelectric transducers. It can also provide their harmonic response under radiating conditions: nearfield and farfield pressure, transmitting voltage response, directivity pattern, electrical impedance, as well as displacement field, nodal plane positions, stress field and various stress criteria...Its accuracy and its ability to describe the physical behavior fo various transducers (Tonpilz transducers, double headmass symmetrical length expanders, free flooded rings, flextensional transducers, bender bars, cylindrical and trilaminar hydrophones...) have been checked by modelling more than twenty different structures and comparing numerical and experimental results.

Descriptors :   *FINITE ELEMENT ANALYSIS, *NUMERICAL ANALYSIS, *PIEZOELECTRIC TRANSDUCERS, *SONAR, BENDING, CODING, DISPLACEMENT, ELECTRICAL IMPEDANCE, FLOODING, HARMONICS, MODELS, NODES, RADIATION, RESPONSE, RINGS, RODS, STRESSES, THREE DIMENSIONAL, TRANSDUCERS, TRANSMITTING, USER MANUALS, VOLTAGE

Subject Categories : Acoustic Detection and Detectors
      Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE