Results 11 to 20 of about 132 (128)
Shock and Vibration, Volume 2021, Issue 1, 2021., 2021 The dynamics of cross‐flow tubes were studied in consideration of initial axial load and distributed impacting constraints, modeled as cubic and trilinear spring constraints. The tubes were modeled as Euler–Bernoulli beams and supported at both ends, including the simply supported tube and clamped‐clamped tube.
Mengdi Liu +5 more
wiley +1 more source
Vibrational Response Analysis of Mistuned Bladed Disk
JSME international journal. Ser. C, Dynamics, control, robotics, design and manufacturing, 1992 When calculating the resonant response of bladed turbine disks, it has been expedient to assume that all blades on a given disk are identical. This leads to the prediction that all blades experience the same amplitude of displacement and stress when excited by forces harmonically related to the rotor speed.
Kaneko, Yasutomo +3 more
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Blade Serial Number Identification Based on Blade Tip Clearance without OPR Sensor
Shock and Vibration, Volume 2021, Issue 1, 2021., 2021 Blade serial number identification is one of the key issues in blade tip‐timing vibration measurement without once‐per‐revolution (OPR) sensor. In order to overcome the shortcomings of the existing blade serial number identification methods without OPR sensor, a new identification method of blade serial number based on blade tip clearance is proposed ...
Liang Zhang +4 more
wiley +1 more source
Mathematical Problems in Engineering, Volume 2021, Issue 1, 2021., 2021 The prediction of vibration characteristics was studied in the mistuned bladed disk by the mobile interface prestressed component mode synthesis (CMS) superelement method. When the strongly, generally, and weakly coupling in the mistuned bladed disk, according to the results of the direct FEM method, the prediction accuracy of this method was verified ...
Liang Zhang +3 more
wiley +1 more source
Shock and Vibration, Volume 2021, Issue 1, 2021., 2021 This paper proposes a novel method for the robust partial assignment of natural frequencies and antiresonances, together with the partial assignment of the related eigenvectors, in lightly damped linear vibrating systems. Dynamic structural modification is exploited to assign the eigenvalues, either of the system or of the adjoint system, together with
Roberto Caracciolo +3 more
wiley +1 more source
Suppression of Non-Synchronous-Vibration Through Intentional Aerodynamic and Structural Mistuning
Volume 9A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Design and Engineering, 2021 Abstract Non-synchronous vibrations (NSV) arising near the stall boundary of compressors are a recurring and potentially safety-critical problem in modern axial compressors and fans. Recent research has improved predictive capabilities and physical understanding of NSV but prevention measures are still lacking.
Stapelfeldt, Sina +1 more
openaire +3 more sources
Mistuned Vibration of Radial Inflow Turbine Impeller
Journal of Fluid Science and Technology, 2008 This paper is concerned with the numerical prediction of impeller blade vibration due to excitation by the wake of nozzle guide vanes in turbochargers. This problem is particularly important as turbochargers are used in a broad range of operation conditions, leading to some unavoidable resonant frequencies.
HATTORI, Hiroaki +2 more
openaire +3 more sources
Analysis of Random Vibration for Mistuned Bladed Disk
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C, 2008 When calculating the vibratory response of bladed turbine disks, it is assumed that all blades on a given disk are identical. This leads to the prediction that all blades experience the same amplitude. However, it has been shown experimentally that significant variations in these amplitudes occur for different blades on the same disk.
KANEKO, Yasutomo +2 more
openaire +2 more sources
Nonlinear Vibrations and Control of Wind Towers With Variable Cross Section and Elastic Foundation
Structural Control and Health Monitoring, Volume 2026, Issue 1, 2026.This study proposes a comprehensive nonlinear modeling and vibration control framework for wind towers subjected to the simultaneous and often conflicting demands of aerodynamic and seismic excitations. The primary contribution of this work involves the development of a fully geometrically nonlinear, high‐fidelity coupled tower–nacelle–blade model that
Manus Saintilma +3 more
wiley +1 more source
Assessment of Probabilistic Methods for Mistuned Bladed Disk Vibration [PDF]
46th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference, 2005 In this paper, the accuracy and efficiency of various probabilistic methods are assessed for the vibration analysis of a mistuned bladed disk system with small, random bladeto-blade differences. A quantity of primary engineering interest is examined, namely the maximum resonant response amplitude of any blade in the assembly over a given frequency ...
Lee, Soo-Yeol +2 more
openaire +1 more source