Results 61 to 70 of about 623 (160)
Chaotic Response and Bifurcation Analysis of a Timoshenko Beam with Backlash Support Subjected to Moving Masses [PDF]
International Journal of Railway Research, 2014 A simply supported Timoshenko beam with an intermediate backlash is considered. The beam equations of motion are obtained based on the Timoshenko beam theory by including the dynamic effect of a moving mass travelling along the vibrating path.
A. Ariaei, M. Kouchaki, S. Ziaei-Rad
doaj
Boundary unique continuation in planar domains by conformal mapping
Bulletin of the London Mathematical Society, Volume 58, Issue 5, May 2026.Abstract Let Ω⊂R2$\Omega \subset \mathbb {R}^2$ be a chord arc domain. We give a simple proof of the the following fact, which is commonly known to be true: a nontrivial harmonic function which vanishes continuously on a relatively open set of the boundary cannot have the norm of the gradient which vanishes on a subset of positive surface measure (arc ...
Stefano Vita
wiley +1 more source
Physical Review ResearchLiquid surface stiffness generates stable Faraday wave (FW) patterns, known as hydrodynamic crystals, which form resonant FW lattices composed of discrete harmonics and subharmonics under monochromatic driving.
Mikheil Kharbedia +7 more
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工程科学与技术Objective Nonlinear harmonics act as sensitive indicators for material early degradation and microdamage. However, their generation is highly dependent on excitation frequency, amplitude and the nonlinear dynamic state of materials, leading to empirical ...
MA Hongwei +3 more
doaj
Effects of Expansion Corner on Linear and Non-Linear Three-Dimensional Boundary Layer Stability
AerospaceThe transition of hypersonic boundary layers remains a significant unresolved challenge in fluid mechanics, particularly regarding the influence of expansion corners on three-dimensional boundary layer instability.
Peisen Lu +3 more
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Авіаційно-космічна техніка та технологіяThis paper proposes and substantiates the improvement of the on-board vibration control system of aircraft engines to expand the system’s functional capabilities and provide multi-class diagnostics based on multi-level processing of vibration signals ...
Nadiia Bouraou +2 more
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IEEE Journal of MicrowavesThis paper presents a high-performance terahertz frequency-modulated continuous-wave (FMCW) transceiver front-end operating at 139.5–148.5 GHz, which leverages a high-power frequency doubler to address critical challenges in terahertz ...
Xuan Sheng +8 more
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Entanglement of Cavity Light Produced by a Superposed Two-Mode Coherent and Subharmonic Light
, 2019 21 pages, 3 ...
Melaku, Menwuyelet, Hirpo, Deribe
openaire +2 more sources
Noise Reduction Using Synthetic Microjet Excitation in Supersonic Rectangular Jets
Applied SciencesThis work explores a potential methodology for rectangular jet noise reduction that employs nozzle unsteady microjet excitation. Using high-fidelity computational studies and spectral analyses, major jet noise sources impacted by the applied actuation ...
Michael Marques +3 more
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Measurement of vibration modes of thin shell of loudspeaker using laser triangulation method
Results in PhysicsPSD sensors can easily receive common mode signals, including ambient light, temperature drift, electromagnetic interference, background noise of the laser output, etc.
Xianyang Zeng +3 more
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