Artículo
Proper orthogonal decomposition for model reduction of a vibroimpact system
Fecha de publicación:
09/2012
Editorial:
Springer
Revista:
Journal of the Brazilian Society of Mechanical Sciences and Engineering
ISSN:
1678-5878
e-ISSN:
1806-3691
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The application that inspires this work is the percussion drilling. This problem has impacts and presents uncertainties. In this first analysis the focus is on the constru ction of an efficient reduced-order model to deal with the nonlinear dynamics due to the impacts. It is important to have an efficient reduced-order model to perform the sto chastic analysis. The simplified full model is constructed using the finite element method, and th ree different bases are used to construct the reduced-order models: LIN-basis (composed by the normal modes of the associated linear problems), POD dir-basis (obtained through proper orthogonal decomposition - direct method) and POD snap -basis (obtained through proper orthogonal decomposition - snapshot method). The shapes of the elem ents of LIN-basis, POD dir-basis, and POD snap -basis are compared. One important conclusion is that the information necessary to represent the details of a vibroimpact dynamics , measured by the proper orthogonal values, is more than the usual 99% recommended.
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(IFISUR)
Articulos de INSTITUTO DE FISICA DEL SUR
Articulos de INSTITUTO DE FISICA DEL SUR
Citación
Ritto, T. G.; Buezas, Fernando Salvador; Sampaio, Rubens; Proper orthogonal decomposition for model reduction of a vibroimpact system; Springer; Journal of the Brazilian Society of Mechanical Sciences and Engineering; 34; 3; 9-2012; 330-340
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