Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Determination of effective loss factors in reduced SEA models
Year:2017
Research Areas
  • Aeronautical engineering
Information
Abstract
The definition of Statistical Energy Analysis (SEA) models for large complex structures is highly conditioned by the classification of the structure elements into a set of coupled subsystems and the subsequent determination of the loss factors representing both the internal damping and the coupling between subsystems. The accurate definition of the complete system can lead to excessively large models as the size and complexity in-creases. This fact can also rise practical issues for the experimental determination of the loss factors. This work presents a formulation of reduced SEA models for incomplete systems defined by a set of effective loss factors. This reduced SEA model provides a feasible number of subsystems for the application of the Power Injection Method (PIM). For structures of high complexity, their components accessibility can be restricted, for instance internal equipments or panels. For these cases the use of PIM to carry out an experimental SEA analysis is not possible. New methods are presented for this case in combination with the reduced SEA models. These methods allow defining some of the model loss factors that could not be obtained through PIM. The methods are validated with a numerical analysis case and they are also applied to an actual spacecraft structure with accessibility restrictions: a solar wing in folded configuration.
International
Si
JCR
No
Title
Journal of Sound and Vibration
ISBN
0022-460X
Impact factor JCR
Impact info
Volume
386
10.1016/j.jsv.2016.09.035
Journal number
From page
311
To page
326
Month
SIN MES
Ranking
Participants
  • Autor: Marcos Chimeno Manguan (UPM)
  • Autor: Elena Roibas Millan (UPM)
  • Autor: Angel Pedro Sanz Andres (UPM)
  • Autor: Francisco Simón Hidalgo (UPM)
  • Autor: Maria José Fernández De las Heras (UPM)
Research Group, Departaments and Institutes related
  • Creador: Centro o Instituto I+D+i: Instituto Universitario de Microgravedad "Ignacio da Riva"
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)