The random character of blade mistuning is a motivation to construct probability models of random uncertainties. Recently, a new approach known as a nonparametric model of random uncertainties, based on the entropy optimization principle, was introduced for modeling random uncertainties in linear and nonlinear elastodynamics. This paper presents an extension of this nonparametric model for vibration analysis of structures with cyclic geometry. In particular this probability model allows the blade eigenfrequencies uncertainties and the blade-modal-shape uncertainties to be modeled.
Publié le : 2004-07-05
Classification:
mistuned bladed disk,
random vibrations,
model uncertainties,
modeling errors,
uncertainty quantification,
nonparametric probabilistic method,
random uncertainties,
structural dynamics,
cyclic geometry,
[SPI.MECA]Engineering Sciences [physics]/Mechanics [physics.med-ph],
[MATH.MATH-PR]Mathematics [math]/Probability [math.PR],
[MATH.MATH-ST]Mathematics [math]/Statistics [math.ST]
@article{hal-00686199,
author = {Capiez-Lernout, Evang\'eline and Soize, Christian},
title = {Nonparametric modeling of random uncertainties for dynamic response of mistuned bladed disks},
journal = {HAL},
volume = {2004},
number = {0},
year = {2004},
language = {en},
url = {http://dml.mathdoc.fr/item/hal-00686199}
}
Capiez-Lernout, Evangéline; Soize, Christian. Nonparametric modeling of random uncertainties for dynamic response of mistuned bladed disks. HAL, Tome 2004 (2004) no. 0, . http://gdmltest.u-ga.fr/item/hal-00686199/