Nonlinear modal analysis of mistuned periodic structures subjected to dry friction

Autor: Moustapha Mbaye, Colas Joannin, Benjamin Chouvion, Fabrice Thouverez, Jean-Philippe Ousty

Publikováno v: Journal of Engineering for Gas Turbines and Power
Journal of Engineering for Gas Turbines and Power, American Society of Mechanical Engineers, 2015, ⟨10.1115/1.4031886⟩

This paper deals with the dynamics of a cyclic system, representative of a bladed-disk subjected to dry friction forces, and exhibiting structural mistuning. The nonlinear complex modes are computed by solving the eigenproblem associated to the free

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a4fbf420ed3c0a46cb985f9b66a827f0
https://hal.archives-ouvertes.fr/hal-01260983/file/HAL-GTP-15-1468.pdf

Experimental Analysis of Dynamic Interaction Between a Centrifugal Compressor and Its Casing

Autor: Patricio Almeida, Jean-Philippe Ousty, Claude Gibert, Fabrice Thouverez, X. Leblanc

Publikováno v: Journal of Turbomachinery
Journal of Turbomachinery, American Society of Mechanical Engineers, 2015, 137 (3), pp.031008. ⟨10.1115/1.4028328⟩

In turbomachinery, one way to improve aerodynamic performance and reduce fuel consumption consists of minimizing the clearance between rotor and casing. Yet the probability of contact is increased and this may lead in some specific conditions to a la

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::950266ffd6da4504fa65a00d2bf95892
https://hal.archives-ouvertes.fr/hal-01574149

A Qualitative Numerical Analysis of Rotor-Casing Interactions in Centrifugal Compressors of Helicopter Engines

Autor: Markus B. Meingast, Alain Batailly, Mathias Legrand, Jean-Philippe Ousty

Publikováno v: Volume 8: 22nd Reliability, Stress Analysis, and Failure Prevention Conference; 25th Conference on Mechanical Vibration and Noise.

In experimental and numerical investigations of unilateral contact and friction induced rotor-casing interactions, a variety of complex phenomena is expected. Although most of the features of the structural responses can be explained within a simplif

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9a1bad7cdd9005b3f8ee4f10a733c66d
https://doi.org/10.1115/detc2013-12212

Robust analysis of design in vibration of turbomachines

Autor: Christian Soize, Moustapha Mbaye, Jean-Philippe Ousty, Evangéline Capiez-Lernout

Publikováno v: ASME Journal of Turbomachinery
ASME Journal of Turbomachinery, 2013, 135 (2), pp.021008-1-8. ⟨10.1115/1.4007442⟩
HAL
54th ASME Turbo Expo 2009
54th ASME Turbo Expo 2009, ASME, Jun 2009, Orlando, FL, United States. pp.387-396

In the context of turbomachinery design, a small variation in the blade characteristics due to manufacturing tolerances can affect the structural symmetry creating mistuning which increases the forced response. However, it is possible to detune the m

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::efaa4430a8323e38fa26fa2d97ce7d7e
https://hal-upec-upem.archives-ouvertes.fr/hal-00743712

Modal Tests and Analysis of a Radial Impeller at Rest: Influence of Surrounding Air on Damping

Autor: X. Leblanc, Laurent Blanc, Patricio Almeida, Fabrice Thouverez, J. P. Laine, Jean-Philippe Ousty, Claude Gibert

Publikováno v: ASME Turbo Expo 2012: Turbine Technical Conference and Exposition
ASME Turbo Expo 2012: Turbine Technical Conference and Exposition, Jun 2012, Copenhagen, Denmark. pp.1121-1131, ⟨10.1115/GT2012-69577⟩

HCF risk assessment for turbomachinery blades requires the prediction of vibratory levels, which in turn requires fine damping quantification. This issue is especially sensitive for structures with low structural damping such as monobloc centrifugal

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5c1e8876b063d09ad7101128154cbb8e
https://hal.archives-ouvertes.fr/hal-03004631/document