Results 21 to 30 of about 5,911,268 (324)

Meson excitation time as a probe of holographic critical point

European Physical Journal C: Particles and Fields, 2023
We study the time evolution of expectation value of Wilson loop as a non-local observable in a strongly coupled field theory with a critical point at finite temperature and nonzero chemical potential, which is dual to an asymptotically AdS charged black ...
Ali Hajilou
doaj   +1 more source

Compromised Vibration Isolator of Electric Power Generator Considering Self-Excitation and Basement Input

Inventions, 2023
A previous study proposed an optimal vibration isolator for self-excitation, but the solution results showed a critical drawback for the basement input.
Young Whan Park, Tae-Wan Kim, Chan-Jung Kim   +2 more
doaj   +1 more source

Critical Steady-State Response of Single-Degree-of-Freedom Bilinear Hysteretic System under Multi Impulse as Substitute of Long-Duration Ground Motion

Frontiers in Built Environment, 2017
A set of multiple impulses is introduced as a substitute of many-cycle harmonic waves which represent the long-duration earthquake ground motion. A closed-form expression is derived of the elastic–plastic response of a single-degree-of-freedom structure ...
Kotaro Kojima, Izuru Takewaki
doaj   +1 more source

Optimal Viscous Damper Placement for Elastic-Plastic MDOF Structures Under Critical Double Impulse

Frontiers in Built Environment, 2019
A new method for optimal viscous damper placement is proposed for elastic-plastic multi-degree-of-freedom (MDOF) structures subjected to the critical double impulse as a representative of near-fault ground motions.
Hiroki Akehashi, Izuru Takewaki
doaj   +1 more source

Nonlinear boudary value problem in the case of parametric resonance [PDF]

Компьютерные исследования и моделирование, 2015
We construct necessary and sufficient conditions for the existence of solution of seminonlinear matrix boundary value problem for a parametric excitation system of ordinary differential equations.
Sergey Mikhaylovich Chujko, O. V. Nesmelova (Starkova), D. V. Sysoev   +2 more
doaj   +1 more source

Critical Earthquake Response of 2DOF Elastic-Perfectly Plastic Model Under Multiple Impulse as Substitute for Long-Duration Earthquake Ground Motions

Frontiers in Built Environment, 2019
An equi-spaced consecutive impulse input is treated as a simplified representative for a long-duration earthquake ground motion. The key property of such input can be captured approximately by using harmonic waves.
Yoshito Saotome, Kotaro Kojima, Izuru Takewaki   +2 more
doaj   +1 more source

Optimal Design and Distribution of Viscous Dampers for Shear Building Structures Under Seismic Excitations

Frontiers in Built Environment, 2019
Viscous dampers (VDs) are effective and widely used passive devices for the protection of civil structures, provided that appropriate design is carried out. For this purpose, optimal design and optimum distribution of VDs method are presented for a shear
Huseyin Cetin, Ersin Aydin, Baki Ozturk
doaj   +1 more source

Critical Response of Nonlinear Base-Isolated Building Considering Soil-Structure Interaction Under Double Impulse as Substitute for Near-Fault Ground Motion

Frontiers in Built Environment, 2018
The critical nonlinear response considering soil-structure interaction is investigated for a base-isolated building under a double impulse as a substitute for near-fault earthquake ground motions.
Hiroki Akehashi, Kotaro Kojima, Kohei Fujita, Izuru Takewaki   +3 more
doaj   +1 more source

Analysis of Synchronous Generator Self-Excitation under Capacitive Load Condition in Variable-Frequency Aviation Power System

Machines, 2022
As power electronic converters become more widely used in aviation power systems, the associated capacitive loads in the harmonic filter circuits increase accordingly.
Haigang Liu, Chu Sun, Mengyu He, Na Wang, Yuanjun Zhou   +4 more
doaj   +1 more source

Collapse-Limit Input Level of Critical Double Impulse for Damped Bilinear Hysteretic SDOF System With Negative Post-yield Stiffness

Frontiers in Built Environment, 2019
The collapse-limit input velocity level of the critical double impulse simulating the principal part of near-fault ground motions is derived for an elastic-plastic structure with viscous damping and P-delta effect.
Yoshito Saotome, Kotaro Kojima, Izuru Takewaki   +2 more
doaj   +1 more source