scholarly journals Multilevel reduced-order computational model in structural dynamics for the low- and medium-frequency ranges

2015 ◽  
Vol 160 ◽  
pp. 111-125 ◽  
Author(s):  
O. Ezvan ◽  
A. Batou ◽  
C. Soize
Keyword(s):  
Computational Model ◽  
Structural Dynamics ◽  
Medium Frequency ◽  
Reduced Order

scholarly journals Reduced-Order Computational Model for Low-Frequency Dynamics of Automobiles

2013 ◽  
Vol 5 ◽  
pp. 310362
Author(s):  
A. Arnoux ◽  
C. Soize ◽  
A. Batou ◽  
L. Gagliardini
Keyword(s):  
Computational Model ◽  
Low Frequency ◽  
Reduced Order

scholarly journals Stochastic Reduced-Order Model in Low-Frequency Dynamics in Presence of Numerous Local Elastic Modes

2011 ◽  
Vol 78 (6) ◽  
Author(s):  
C. Soize ◽  
A. Batou
Keyword(s):  
Structural Dynamics ◽  
Complex Structure ◽  
Probabilistic Approach ◽  
Low Frequency ◽  
Reduced Order Model ◽  
Frequency Range ◽  
Order Model ◽  
Reduced Order ◽  
Global Modes ◽  
Elastic Modes

This paper deals with the nonusual case in structural dynamics for which a complex structure exhibits both the usual global elastic modes and numerous local elastic modes in the low-frequency range. Despite the presence of these local elastic modes, we are interested in constructing a stochastic reduced-order model using only the global modes and in taking into account the local elastic modes with a probabilistic approach. In the first part, a formulation and an algorithm, which allow the “global elastic modes” and the “local elastic modes” to be calculated, are presented. The second part is devoted to the construction of the stochastic reduced-order model with the global elastic modes and in taking into account the uncertainties on the effects of the local elastic modes by the nonparametric probabilistic approach. Finally, an application, which validates the proposed theory is presented.

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