Multi-variable optimisation of a vibro-acoustic system using a distributed computing network
Date
2005
Authors
Howard, C.
Hansen, C.
Zander, A.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Conference paper
Citation
ICSV12: Twelfth International Congress on Sound and Vibration, 11-14 July 2005, Lisbon Portugal: proceedings: CD-ROM [paper 665]
Statement of Responsibility
Carl Q. Howard, Colin H. Hansen, and Anthony C. Zander
Conference Name
International Congress on Sound and Vibration (12th : 2005 : Lisbon, Portugal)
Abstract
This paper describes a computational method involving the use of a genetic algorithm and a large number of networked desktop computers to optimise the locations and parameters of acoustic and vibration absorbers to reduce noise transmission into an enclosure. A Finite Element model of a vibro-acoustic system was created in ANSYS and the uncoupled structural and acoustic modal responses were calculated. The combined response of the acoustic and vibration absorbers, the acoustic cavity and structural modal responses were coupled using modal coupling theory in Matlab. Optimisations were conducted using a varying number of acoustic and vibration absorbers. The use of the networked desktop computers dramatically reduced the time taken to conduct the optimisation compared a single desktop computer. A factor of 25 improvement in speed was realised for the physical system examined.