VALIDATION OF POWER FLOW MODELS FOR PLATE-BEAM SYSTEMS - EXPERIMENTAL DESIGN

PDF

Authors
  1. Smith, M.J.
  2. Chemuka, M.W.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN);MARTEC Ltd, Halifax NS (CAN)
Abstract
Three experimental investigations are proposed for validating Power Flow Finite Element Analysis (PFFEA) for coupled plate-beam structures subject to noise source excitation. A vibration measurement system consisting of a laser Doppler vibrometer (LDV) and a force transducer is proposed for measuring the vibrational response and power flow in beam and plate-beam specimens, as well as a stiffened-plate section of a real ship. The two specimens are to have layers of elastomeric damping material attached to their surfaces to suppress the reflection of flexural waves. Initial results from a pilot experimental investigation of the beam specimen have shown that the measurement system and damping treatment performed as expected, but that there were problems in calibrating the transducer signals. It was also found that finite difference expressions for beam power plate-beam systems are expected to help validate current analytical and statistical models for distribution of vibrational power transmitted to the surrounded structure.
Keywords
Power Flow Finite Element Analysis (PFFEA);Laser doppler velocimeter;Power flow
Report Number
DREA-CR-96-461;MARTEC-TR-96-04 — Contractor Report; Technical Report
Date of publication
01 Oct 1996
Number of Pages
100
DSTKIM No
97-03310
CANDIS No
503378
Format(s):
Hardcopy;Document Image stored on Optical Disk

Permanent link

Document 1 of 1

Date modified: