Finite Element Analysis of a Broadband Flextensional Transducer

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 with 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 useful tool for investigation of changes to the Class III BSP. Greater accuracy is expected with the inclusion of the rubber boot in the model.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1999
Accession Number
ADA630505

Entities

People

  • G. W. Mcmahon

Organizations

  • Defence Research and Development Canada

Tags

Communities of Interest

  • Air Platforms
  • Autonomy

DTIC Thesaurus Topics

  • Abstracts
  • Accuracy
  • Aluminum
  • Bandwidth
  • Broadband
  • Computers
  • Contractors
  • Finite Element Analysis
  • Frequency
  • Frequency Bands
  • Geometry
  • Materials
  • Modal Analysis
  • Optimization
  • Resonance
  • Sea Water
  • Transducers

Readers

  • Computational Modeling and Simulation
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Structural Dynamics.