Results 11 to 20 of about 2,060 (206)
DYNAMICS OF MISTUNED RADIAL TURBINE WHEELS [PDF]
, 2006 This paper presents investigations carried out at Holset into the dynamics of mistuned\ud radial turbine wheels, including a literature review, a lumped parameter model,\ud identification of the most responsive blade, distribution of the peak maximum order\ud response and a method of mistiming identification.
Sheng, X., Clay, D.C., Allport, John
core +6 more sources
Mistuning Forced Response Characteristics Analysis of Mistuned Bladed Disks
Journal of Engineering for Gas Turbines and Power, 2010 The problem of determining the worst-case mistuning pattern and robust maximum mistuning forced response of a mistuned bladed rotor is formulated and solved as an optimization problem. This approach is exemplified on a two-degrees-of-freedom per blade disk model, two three-degrees-of-freedom per blade disk models, and a mistuned two-stage bladed rotor.
Haitao Liao +3 more
openaire +2 more sources
Mistuning Identification and Model Updating of an Industrial Blisk
International Journal of Rotating Machinery, 2007 The results of a complete study of mistuning identification on an industrial blisk are presented. The identification method used here is based on a model-updating technique of a reduced order.
D. Laxalde +4 more
doaj +2 more sources
, 2017 One of the common failure modes of the diesel engine turbochargers is high-cycle fatigue of the turbine-wheel blades. Mistuning of the blades due to the casting process is believed to contribute to this failure mode. A laser vibrometer is used to characterize mistuning for a population of turbine wheels through the analysis of the blade-response to ...
openaire +2 more sources
Early Musical Predictions in the Brain as Indexed by the Mismatch Negativity-From Acoustic Deviants to Cognitive Musical Errors. [PDF]
Eur J NeurosciOver the past two decades, ecologically valid music paradigms have shown that mismatch negativity (MMN) reflects a primitive musical intelligence, indexing hierarchical auditory predictions in music that parallel those observed in speech. MMN captures processing from early sensory detection in superior temporal cortices to higher order frontal ...
Brattico E +3 more
europepmc +2 more sources
Effect of mistuning parameters on dynamic characteristics of mistuned bladed disk [PDF]
Journal of Vibroengineering, 2021 The aim of this paper is to study the nonlinear dynamics of the tenon and mortise of aero-engine compressor blades, based on lumped parameter model of tenon and mortise of blade disk system, considering the influence of gap and friction, The nonlinear vibration characteristics of mistuned bladed disk with different mistuning parameters are studied. The
Hongyuan Zhang +4 more
openaire +1 more source
Embodied Responses to Harmony and (Poly)Rhythm: An Integrated Ratio-Based Perception-Action Framework. [PDF]
Ann N Y Acad SciHarmony and rhythm perception are often studied separately, yet both reveal a shared sensitivity to low‐order integer ratios. In harmony, intervals like the octave (2:1) and fifth (3:2) predict consonance and ease of encoding. In rhythm, patterns with simple ratios (e.g., 2:1, 3:2) are easier to perceive, reproduce, and remember.
Di Stefano N, Large E, Spence C.
europepmc +2 more sources
Nihon Kikai Gakkai ronbunshu, 2016 Although bladed disks of turbomachinery are nominally designed to be cyclically symmetric (tuned system), the vibration characteristics of all blades on a disk are slightly different due to the manufacturing tolerance, the deviation of the material ...
Yasutomo KANEKO +3 more
doaj +1 more source
Stereo-DIC Measurements of a Vibrating Bladed Disk: In-Depth Analysis of Full-Field Deformed Shapes
Applied Sciences, 2021 Vibration measurements of turbomachinery components are of utmost importance to characterize the dynamic behavior of rotating machines, thus preventing undesired operating conditions.
Paolo Neri +2 more
doaj +1 more source
High order sensitivity analysis of a mistuned blisk including intentional mistuning
Journal of Theoretical and Applied Mechanics, 2017 Small deviations between turbine blades exist due to manufacturing tolerances or material inhomogeneities. This effect is called mistuning and usually causes increased vibration amplitudes and also a lower service life expectancy of bladed disks or so called blisks (bladed integrated disk).
Pohle, Linus +3 more
openaire +3 more sources