Results 81 to 90 of about 1,536 (218)
Shock and Vibration, Volume 2025, Issue 1, 2025.For the quasizero stiffness (QZS) isolators, the mismatch between the stiffness and the load will significantly impact the vibration isolation performance, greatly reducing the isolation efficiency and complicating the load motion. Therefore, a load‐adaptive method is designed innovatively based on a semianalytical solution of the QZS isolator, which ...
Shuyan Xia, Dawei An, Daolin Xu, Yan Niu
wiley +1 more source
Rubbing Dynamics of Dual‐Disk Rotor System Supported by Oil Film Bearing
Shock and Vibration, Volume 2025, Issue 1, 2025.As the clearance between the rotor and the casing gradually becomes smaller, the probability of collision and friction increases greatly, the rubbing dynamics of the dual disk‐shaft‐bearing system is studied in this paper. Considering the gyro effect of rotor, a dynamic model of the rotor system under nonlinear oil film force is established; the ...
Guofang Nan +5 more
wiley +1 more source
Analysis of the effect of mistuning on turbomachinery aeroelasticity [PDF]
, 2001 . This paper looks at the eect of alternate and random mis-tuning on utter and forced response in turbomachinery. Two levels of asymptotic analysis are used, and their accuracy is assessed by comparison with the exact solution obtained by direct ...
Giles, M.B. +3 more
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Music Analysis, Volume 43, Issue 2, Page 247-301, July 2024.ABSTRACT In major‐minor tonality, V implies I, and rising fourths, falling thirds and rising seconds between successive chord roots are more common than falling fourths, rising thirds and falling seconds respectively. Possible explanations involve history (in two‐part medieval counterpoint, harmonic major sixths resolved to octaves – maintained in V–I);
RICHARD PARNCUTT
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Influence of mechanical mistuning on the forced response of a turbine cascade [PDF]
, 2006 An experimental investigation has been conducted in the non-rotating annular test facility of the "Laboratoire de Thermique Appliquée et de Turbomachines" (LTT), "École Polytechnique Fédérale de Lausanne" (EPFL).
Beretta, Arrigo
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AI Magazine, Volume 45, Issue 1, Page 111-116, Spring 2024.Abstract The NSF AI Institute for Artificial Intelligence and Fundamental Interactions (IAIFI, pronounced /aI‐faI/) is one of the inaugural NSF AI research institutes (https://iaifi.org). The IAIFI is enabling physics discoveries and advancing foundational AI through the development of novel AI approaches that incorporate first principles from ...
Jesse Thaler +2 more
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Resonance Frequency Detuning With Application Towards Blade Mistuning [PDF]
, 2017 This paper extends the Resonance Frequency Detuning vibration reduction approach by analyzing the performance in cases of turbomachinery blade mistuning.
Garrett K. Lopp +3 more
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Flutter analysis of mistuned bladed disk
Nihon Kikai Gakkai ronbunshu, 2015 Although, in designing blades, it is assumed that all blades on a disk are identical (tuned system), the vibration characteristics of the blade is slightly different due to the manufacturing tolerance, the deviation of the material property, and so on ...
Yasutomo KANEKO +3 more
doaj +1 more source
Structural Control and Health Monitoring, Volume 2024, Issue 1, 2024.The nonlinear energy sink (NES) has drawn increasing research attention in recent years. In this study, we investigated a novel disc spring‐based vertical NES device capable of counterbalancing payload gravity and providing a combination of linear and cubic restoring forces.
Decheng Lu +3 more
wiley +1 more source
Passive control of flutter and forced response in bladed disks via mistuning [PDF]
, 1999 Mistuning or blade to blade variation in jet-engine bladed-disks can lead to large changes in engine performance. Even the small random mistuning associated with manufacturing tolerances can significantly change both stability boundaries and forced ...
Shapiro, Benjamin
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