Comparison of numerical models for vibro-acoustic analysis of structural panels in low modal density range engaging air layers

Chimeno Manguan, Marcos and Martínez-Calvo, B. and Roibás-Millán, E. and Fajardo Sanz, Pablo and Simon, F. and López Díez, Jesús (2012). Comparison of numerical models for vibro-acoustic analysis of structural panels in low modal density range engaging air layers. In: "12th European Conference on Space Structures, Materials & Environmental Testing", 20/03/2012 - 23/03/2012, Noordwijk, The Netherlands. ISBN 978-92-9092-255-1. pp. 1-6.

Description

Title: Comparison of numerical models for vibro-acoustic analysis of structural panels in low modal density range engaging air layers
Author/s:
  • Chimeno Manguan, Marcos
  • Martínez-Calvo, B.
  • Roibás-Millán, E.
  • Fajardo Sanz, Pablo
  • Simon, F.
  • López Díez, Jesús
Item Type: Presentation at Congress or Conference (Article)
Event Title: 12th European Conference on Space Structures, Materials & Environmental Testing
Event Dates: 20/03/2012 - 23/03/2012
Event Location: Noordwijk, The Netherlands
Title of Book: Proceedings
Date: 20 March 2012
ISBN: 978-92-9092-255-1
Subjects:
Faculty: E.T.S.I. Aeronáuticos (UPM)
Department: Vehículos Aeroespaciales [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

Full text

[img]
Preview
PDF - Requires a PDF viewer, such as GSview, Xpdf or Adobe Acrobat Reader
Download (304kB) | Preview

Abstract

During launch, satellite and their equipment are subjected to loads of random nature and with a wide frequency range. Their vibro-acoustic response is an important issue to be analysed, for example for folded solar arrays and antennas. The main issue at low modal density is the modelling combinations engaging air layers, structures and external fluid. Depending on the modal density different methodologies, as FEM, BEM and SEA should be considered. This work focuses on the analysis of different combinations of the methodologies previously stated used in order to characterise the vibro-acoustic response of two rectangular sandwich structure panels isolated and engaging an air layer between them under a diffuse acoustic field. Focusing on the modelling of air layers, different models are proposed. To illustrate the phenomenology described and studied, experimental results from an acoustic test on an ARA-MKIII solar array in folded configuration are presented along with numerical results.

More information

Item ID: 22916
DC Identifier: http://oa.upm.es/22916/
OAI Identifier: oai:oa.upm.es:22916
Official URL: http://www.congrexprojects.com/2012-events/12a06/introduction
Deposited by: Memoria Investigacion
Deposited on: 03 Apr 2014 18:04
Last Modified: 21 Apr 2016 20:52
  • Logo InvestigaM (UPM)
  • Logo GEOUP4
  • Logo Open Access
  • Open Access
  • Logo Sherpa/Romeo
    Check whether the anglo-saxon journal in which you have published an article allows you to also publish it under open access.
  • Logo Dulcinea
    Check whether the spanish journal in which you have published an article allows you to also publish it under open access.
  • Logo de Recolecta
  • Logo del Observatorio I+D+i UPM
  • Logo de OpenCourseWare UPM