In this paper the capacity of Proper Orthogonal Decomposition of separating different physical mechanisms incorporated in one single loading process is discussed. Examples are shown with specific reference to the case of wind loading, but the approach and the conclusions are general, therefore applicable to any other source of dynamic, uncorrelated excitation. Issues such as (a) the question of why mathematical decoupling of a process may bring also physical decoupling, (b) the meaning of the constrain of orthogonality of modes, (c) the effects of the presence of the mean value of the process, (d) the application of Proper Orthogonal Decomposition to non-Gaussian processes, (e) the relation between time- and frequency-domain applications of Proper Orthogonal Decomposition, are addressed.
Proper Orthogonal Decomposition of dynamic loads on structures
RICCIARDELLI, Francesco d'Assisi
2005
Abstract
In this paper the capacity of Proper Orthogonal Decomposition of separating different physical mechanisms incorporated in one single loading process is discussed. Examples are shown with specific reference to the case of wind loading, but the approach and the conclusions are general, therefore applicable to any other source of dynamic, uncorrelated excitation. Issues such as (a) the question of why mathematical decoupling of a process may bring also physical decoupling, (b) the meaning of the constrain of orthogonality of modes, (c) the effects of the presence of the mean value of the process, (d) the application of Proper Orthogonal Decomposition to non-Gaussian processes, (e) the relation between time- and frequency-domain applications of Proper Orthogonal Decomposition, are addressed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
