Results 31 to 40 of about 40,475 (306)
Harmonic response analysis of symmetric laminated composite beams with different boundary conditions
Science and Engineering of Composite Materials, 2014 This study deals with the determination of the harmonic response of symmetric laminated composite beams by the finite element method. The structural stiffness of the composite beam is determined by the classical laminated plate theory. Four different ply
Kıral Zeki
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Investigation of the Influence of Splitter Blades on the Resonance Conditions of Impellers
Applied Sciences, 2019 The conventional resonance conditions are derived based on the conventionally designed impellers without splitter blades. This paper proposes the resonance conditions for impellers under the excitation from the impeller−diffuser interaction with ...
Kaicheng Liu, Cheng Yan
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Research of three harmonic excitation synchronous motor speed control system
AIP AdvancesThis paper presents a speed control system based on the third harmonic excitation synchronous motor. Compared with harmonic excitation by adding harmonic windings in the electric excitation motor, the structure is simpler, with lower hardware costs and ...
Xiaoou Fan +3 more
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Novel Single Inverter-Controlled Brushless Wound Field Synchronous Machine Topology
Mathematics, 2021 This paper proposes a novel brushless excitation topology for a three-phase synchronous machine based on a customary current-controlled voltage source inverter (VSI).
Syed Sabir Hussain Bukhari +5 more
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An iteration-free approach to excitation harmonization
Mechanical Systems and Signal ProcessingSinusoidal excitation is particularly popular for testing structures in the nonlinear regime. Due to the nonlinear behavior and the inevitable feedback of the structure on the exciter, higher harmonics in the applied excitation are generated. This is undesired, because the acquired response may deviate substantially from that of the structure under ...
Patrick Hippold +8 more
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Sudden excitations of harmonic normal modes
Journal of Mathematical Chemistry, 2022 AbstractThe N-harmonium boson system, i.e., a completely integrable model of N particles where both the external confinement and the two-particle interaction are harmonic, is investigated under the action of sudden time-dependent perturbation. This quench-like external perturbation of confinement has a quadrupolar space-character.
I. Aldazabal, I. Nagy
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Operational modal analysis with non stationnary inputs [PDF]
, 2013 Operational modal analysis (OMA) techniques enable the use of in-situ and uncontrolled vibrations to be used to lead modal analysis of structures. In reality operational vibrations are a combination of numerous excitations sources that are much more ...
Michon, Guilhem +3 more
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen +23 more
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Shock and harmonic response analysis of UAV nose landing gear system with air damper
Cogent Engineering, 2021 This research presents a response analysis of a UAV nose landing gear system equipped with an air damper under shock and harmonic excitation. The study begins with dynamic modeling of the UAV landing gear system.
Lovely Son +4 more
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Second harmonic generation confocal microscopy of collagen type I from rat tendon cryosections
, 2006 We performed second harmonic generation (SHG) imaging of collagen in rat-tendon cryosections, using femtosecond laser scanning confocal microscopy, both in backscattering and transmission geometries.
Theodossiou, Theodossis A. +11 more
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