Results 1 to 10 of about 5,030,445 (248)

Closed-form critical response of elastic-plastic shear building with viscous damper under pseudo-double impulse for simulating resonant response under near-fault fling-step motion

Frontiers in Built Environment, 2022
A set of approximate closed-form solutions of the maximum interstory drifts under the critical pseudo-double impulse (PDI) is derived for non-proportionally damped multi-story shear building models with bilinear hysteresis.
Hiroki Akehashi, Izuru Takewaki
doaj   +1 more source

Research on flexible excitation system applied to improve transient stability characteristics of the receiving-end power grid

Zhejiang dianli, 2022
The transient forced excitation of the traditional excitation system used for synchronous condenser is limited and unmaintainable. A flexible excitation system can improve the crest value of transient forced excitation and maintain the forced excitation ...
WANG Longfei, ZHANG Jiancheng, WANG Bowen, ZHUO Guying, HUA Wen, XIONG Hongtao   +5 more
doaj   +1 more source

Competitive Failure of Loosening and Fatigue of Bolts under Composite Excitation

Shock and Vibration, 2021
At present, research on the loosening of bolts under transverse excitation and their fatigue under axial excitation has been relatively mature, but research on the competitive relationship and failure characteristics between loosening and fatigue of ...
Guang-Wu Yang, Long Yang, Shou-Ne Xiao, Shi-Lin Jiang, Wei Ma   +4 more
doaj   +1 more source

Analytical Threshold for Chaos of Piecewise Duffing Oscillator with Time-Delayed Displacement Feedback

Shock and Vibration, 2022
In this paper, the bifurcation and chaotic motion of a piecewise Duffing oscillator with delayed displacement feedback under harmonic excitation are studied.
Zhang Ming-Xin, Wang Jun, Shen Yong-Jun, Zhang Jian-Chao   +3 more
doaj   +1 more source

Simultaneous Optimization of Elastic-Plastic Building Structures and Viscous Dampers Under Critical Double Impulse

Frontiers in Built Environment, 2020
A new method for simultaneous optimal design of main building structures and viscous dampers is proposed for elastic-plastic multi-degree-of-freedom (MDOF) building structures subjected to the critical double impulse which is regarded as a representative
Hiroki Akehashi, Izuru Takewaki
doaj   +1 more source

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

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

Laser-induced valence electron excitation in acetylene

Frontiers in Physics, 2022
Strong-field induced valence electron excitation is a common process in strong field interaction with atoms and molecules. In the case of polyatomic molecules, the effects of ionization from low-lying molecular orbitals and nuclear dynamics during the ...
Hongtao Hu, Yi Hung, Seyedreza Larimian, Sonia Erattupuzha, Andrius Baltuška, Markus Zeiler, Xinhua Xie   +6 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