Observatorio de I+D+i UPM

Memorias de investigación
Artículos en revistas:
Determination of effective loss factors in reduced SEA models
Año:2017
Áreas de investigación
  • Ingeniería aeronaútica
Datos
Descripción
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.
Internacional
Si
JCR del ISI
No
Título de la revista
Journal of Sound and Vibration
ISSN
0022-460X
Factor de impacto JCR
Información de impacto
Volumen
386
DOI
10.1016/j.jsv.2016.09.035
Número de revista
Desde la página
311
Hasta la página
326
Mes
SIN MES
Ranking
Esta actividad pertenece a memorias de investigación
Participantes
  • 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)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Centro o Instituto I+D+i: Instituto Universitario de Microgravedad "Ignacio da Riva"
S2i 2021 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)