Results 31 to 40 of about 189,622 (293)

Online Frequency Estimation on a Building-like Structure Using a Nonlinear Flexible Dynamic Vibration Absorber

Mathematics, 2022
The online frequency estimation of forced harmonic vibrations on a building-like structure, using a nonlinear flexible vibration absorber in a cantilever beam configuration, is addressed in this article.
Francisco Beltran-Carbajal, Hugo Francisco Abundis-Fong, Luis Gerardo Trujillo-Franco, Hugo Yañez-Badillo, Antonio Favela-Contreras, Eduardo Campos-Mercado   +5 more
doaj   +1 more source

Dual-Inverter-Controlled Brushless Operation of Wound Rotor Synchronous Machines Based on an Open-Winding Pattern

Energies, 2020
In an open-winding machine, three-phase stator currents can be controlled such that the input armature currents may contain the third-harmonic current component in addition to the fundamental.
Syed Sabir Hussain Bukhari, Ghulam Jawad Sirewal, Faheem Akhtar Chachar, Jong-Suk Ro   +3 more
doaj   +1 more source

Vibrational fingerprint of the absorption properties of UiO-type MOF materials [PDF]

, 2016
The absorption properties of UiO-type metal-organic frameworks are computed using TD-DFT simulations on the organic linkers. A set of nine isoreticular structures, including the UiO-66 and UiO-67 materials and functionalized variants, are examined.
Hemelsoet, Karen, Hendrickx, Kevin, Sastre, German, Van Der Voort, Pascal, Van Speybroeck, Veronique, Van Yperen-De Deyne, Andy, Vanduyfhuys, Louis   +6 more
core   +1 more source

Accelerated Sine-on-Random Vibration Test Method of Ground Vehicle Components over Conventional Single Mode Excitation

Applied Sciences, 2017
Automotive manufacturers typically assess the mechanical durability performance of ground vehicle components for vibration excitation using either random or harmonic spectral loading patterns, such as the loading patterns suggested in international ...
Chan-Jung Kim
doaj   +1 more source

State Dependent Effective Interaction for the Hyperspherical Formalism [PDF]

, 1999
The method of effective interaction, traditionally used in the framework of an harmonic oscillator basis, is applied to the hyperspherical formalism of few-body nuclei (A=3-6).
A. Kievsky, A. Kievsky, A. Kievsky, A. Novoselsky, A. Novoselsky, B. S. Pudliner, D. C. Zheng, D. C. Zheng, D. R. Thomson, Giuseppina Orlandini, H. Kamada, I. Reichstein, J. G. Zabolitzky, J. G. Zabolitzky, J. L. Ballot, J. L. Friar, K. Suzuki, K. Suzuki, K. Suzuki, K. Varga, M. Fabre de la Ripelle, M. Hjorth-Jensen, M. Kamimura, M. Kamimura, N. Barnea, N. Barnea, N. Barnea, N. Barnea, N. W. Schellingerhout, Nir Barnea, P. Navrátil, P. Navrátil, P. Navrátil, P. Navrátil, R. A. Malfliet, R. Krivec, S. A. Sofianos, S. Rosati, V. D. Efros, V. D. Efros, V. D. Efros, V. D. Efros, Winfried Leidemann, Yu. I. Fenin   +43 more
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HARMONIC ANALYSIS OF TORSIONAL VIBRATION FORCE EXCITATION [PDF]

Scientific Journal of Silesian University of Technology. Series Transport, 2017
In our department, we deal with various methods for the continuous tuning of torsional oscillating mechanical systems during their operation, mainly in terms of torsional vibration magnitude.
Matej URBANSKÝ
doaj   +1 more source

Parity forbidden excitations of Sr2CuO2Cl2 revealed by optical third-harmonic spectroscopy

, 2001
We present the first study of nonlinear optical third harmonic generation in the strongly correlated charge-transfer insulator Sr2CuO2Cl2. For fundamental excitation in the near-infrared, the THG spectrum reveals a strongly resonant response for photon ...
A. B. Schumacher, A. Schülzgen, C. M. Varma, D. S. Chemla, D. S. Chemla, D. Salamon, E. Hanamura, F. C. Zhang, G. P. Zhang, H. Kishida, H. S. Choi, J. P. Hermann, J. S. Dodge, L. L. Miller, L. L. Miller, M. A. Carnahan, M. A. Kastner, M. E. Simón, M. Grilli, M. Z. Hasan, P. D. Maker, P. Kuiper, P. W. Anderson, R. A. Kaindl, R. Liu, R. Lövenich, R. W. Boyd   +26 more
core   +1 more source

Extraction of an Overlapped Second Harmonic Chirp Component using the Fractional Fourier Transform

, 2011
In ultrasound harmonic imaging with chirp coded excitation, the axial resolution can be improved by increasing the excitation signal bandwidth. However, increasing the bandwidth will cause overlapping between the received nonlinear second harmonic chirp ...
Arif, M, Cowell, DMJ, Freear, S, Harput, S, Smith, P   +4 more
core   +1 more source

Optimal trajectories for efficient atomic transport without final excitation [PDF]

, 2011
We design optimal harmonic-trap trajectories to transport cold atoms without final excitation, combining an inverse engineering techniqe based on Lewis-Riesenfeld invariants with optimal control theory. Since actual traps are not really harmonic, we keep
Chen, Xi, Li, Jr-Shin, Muga, J. G., Stefanatos, Dionisis, Torrontegui, E.   +4 more
core   +2 more sources

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
doaj   +1 more source