The selection of quantities and/or variables that have to be corrected during the updating process is addressed in this paper. Among quantities, the major alternative is the choice between correction factors and physical parameters. The former represent scale factors used to adjust mass and stiffness submatrices of the analytical model, while the latter include parameters such as the elasticity modulus, mass density, geometrical dimensions, etc. Advantages and limitations in the process of updaring physical parameters instead of correction factors are highlighted: it can be shown that only a limited number of physical parameters can be simultaneously updated for each element. The two approaches are compared using a previously developed updating procedure to solve an experimental test case.

A comparison between the use of physical parameters and correction factors in dynamic model updating / W., D’Ambrogio; Fregolent, Annalisa. - STAMPA. - DE-Vol. 84-3,:(1995), pp. 1181-1190. (Intervento presentato al convegno 15th ASME, Proceedings of the Design Engineering Technical Conference tenutosi a Boston (USA) nel 17-20 settembre).

A comparison between the use of physical parameters and correction factors in dynamic model updating

FREGOLENT, Annalisa
1995

Abstract

The selection of quantities and/or variables that have to be corrected during the updating process is addressed in this paper. Among quantities, the major alternative is the choice between correction factors and physical parameters. The former represent scale factors used to adjust mass and stiffness submatrices of the analytical model, while the latter include parameters such as the elasticity modulus, mass density, geometrical dimensions, etc. Advantages and limitations in the process of updaring physical parameters instead of correction factors are highlighted: it can be shown that only a limited number of physical parameters can be simultaneously updated for each element. The two approaches are compared using a previously developed updating procedure to solve an experimental test case.
1995
15th ASME, Proceedings of the Design Engineering Technical Conference
04 Pubblicazione in atti di convegno::04b Atto di convegno in volume
A comparison between the use of physical parameters and correction factors in dynamic model updating / W., D’Ambrogio; Fregolent, Annalisa. - STAMPA. - DE-Vol. 84-3,:(1995), pp. 1181-1190. (Intervento presentato al convegno 15th ASME, Proceedings of the Design Engineering Technical Conference tenutosi a Boston (USA) nel 17-20 settembre).
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/424356
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