Finite Element Analysis of a Broadband Flextensional Transducer

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Authors
  1. McMahon, G.W.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN);FanTech Consulting Service, Stewiacke NS (CAN)
Abstract
The Class III flextensional transducer is a dual barrel stave design that shows promise as a broadband projector having a potentially useful bandwidth of over three octaves. A simple axially-symmetric finite element model, for use iwht the computer modelling program, MAVART, has been set up to aid in the optimization of this design. Performance results predicted by the model are compared with measured results for a DREA experimental Class III barrel-stave projector. The model provides a good representation of the performance, the main discrepancy being in the fundamental resonance frequency, which is 10% lower than measured. The rubber boot, which was not included in the model, is believed to be the primary reason for the discrepancy. This model will be a usefl tool for investigation of changes to the Class III BSP. Greater accuracy is expected with the inclusion of the rubber boot in the model.
Keywords
Barrel Stave Projectors (BSP);Barrel stave flextensional projectors;Broadband transducers;Flextensional transducers
Report Number
DREA-CR-1999-008 — Contractor Report
Date of publication
01 Jan 1999
Number of Pages
24
DSTKIM No
99-01698
CANDIS No
511051
Format(s):
Hardcopy;Document Image stored on Optical Disk

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