Random uncertainties modelling for vibroacoustic frequency response functions of cars
Durand, J.-F. ; Gagliardini, L. ; Soize, Christian
HAL, hal-00686191 / Harvested from HAL
Text on HAL
This paper deals with the numerical prediction of the vibroacoustic frequency response functions of cars. In such a complex vibroacoustic system, the role played by data errors and model errors is important and does not have the same consequences for stiff structural element or for flexible (soft) structural element. A non-parametric probabilistic model of random uncertainties is introduced to study the sensitivity of these vibroacoustic frequency response functions. The method is applied to a simplified car body with an internal acoustic cavity. The confidence region of each random vibroacoustic frequency response function is numerically constructed. The results obtained, clearly show an important difference between the level of uncertainties for stiff and flexible structural elements.
Publié le : 2004-09-20
Classification:  uncertainty quantification,  vibroacoustics,  medium frequency,  structural acoustics,  automotive vehicle,  nonparametric probabilistic approach,  staistical inverse method,  modeling errors,  model uncertainties,  [SPI.MECA.VIBR]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Vibrations [physics.class-ph],  [PHYS.MECA.VIBR]Physics [physics]/Mechanics [physics]/Vibrations [physics.class-ph],  [SPI.ACOU]Engineering Sciences [physics]/Acoustics [physics.class-ph],  [PHYS.MECA.ACOU]Physics [physics]/Mechanics [physics]/Acoustics [physics.class-ph],  [MATH.MATH-ST]Mathematics [math]/Statistics [math.ST],  [STAT.TH]Statistics [stat]/Statistics Theory [stat.TH],  [MATH.MATH-PR]Mathematics [math]/Probability [math.PR] 
@article{hal-00686191,
     author = {Durand, J.-F. and Gagliardini, L. and Soize, Christian},
     title = {Random uncertainties modelling for vibroacoustic frequency response functions of cars},
     journal = {HAL},
     volume = {2004},
     number = {0},
     year = {2004},
     language = {en},
     url = {http://dml.mathdoc.fr/item/hal-00686191}
}

Durand, J.-F.; Gagliardini, L.; Soize, Christian. Random uncertainties modelling for vibroacoustic frequency response functions of cars. HAL, Tome 2004 (2004) no. 0, . http://gdmltest.u-ga.fr/item/hal-00686191/