Predicting Rediated Noise With Power Flow Finite Element Analysis

Abstract

The development and incorporation of the latest enhancements to the DRDC s PFFEA code are described. The purpose of this work was to make the modeling of the physical environment more realistic, while ensuring that the code runs as efficiently as possible. To this end a new high frequency radiated noise prediction capability has been added. This capability is based on algorithms developed for use in DRDC s AVAST acoustic modeling software tool. In addition to this, a series of upgrades have been made to the PFFFEA processors, PFGEN and POSTPF, in order to ensure compatibility with the latest version of the VASTF program. Finally, a series of validation studies, involving the prediction of the high frequency structural response of DRDC s ring stiffened test cylinder, are also presented.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 2007
Accession Number
ADA609225

Entities

People

  • D. Brennan
  • Jon W. Wallace
  • Leishan Jiang
  • T. S. Koko

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Algorithms
  • Classification
  • Contracts
  • Engineering
  • Finite Element Analysis
  • Frequency
  • Mobility
  • Noise
  • Radiated Noise
  • Resonant Frequency
  • Ring Stiffened Cylinders
  • Security
  • Sound Pressure
  • Stiffened Cylinders
  • Structural Response
  • Validation
  • Vibration

Fields of Study

  • Physics

Readers

  • Acoustics.
  • Computational Fluid Dynamics (CFD)
  • Structural Dynamics.