Results 1 to 10 of about 22,087 (289)

Influence of Vertical Equivalent Damping Ratio on Seismic Isolation Effectiveness of Nuclear Reactor Building

open access: yesEnergies, 2021
This paper aimed at evaluating the influence of different vertical equivalent damping ratios of a 3-dimensional combined isolation bearing (3D-CIB) as regards seismic response and isolation effectiveness.
Xiuyun Zhu, Jianbo Li, Gao Lin, Rong Pan
doaj   +4 more sources

Modeling and simulation of the equivalent material damping loss factor of fixed joint interface

open access: yesAdvances in Mechanical Engineering, 2016
The damping characteristics of the joint interfaces affect the dynamic behaviors of a whole accurate machine construction notably. An equivalent material damping model between the joint interfaces under the tangential force is established based on ...
Yakai Xu, Dawei Zhang
doaj   +3 more sources

Active Control Method Based on Equivalent Stiffness and Damping Coefficient for an Electromagnetic Isolation System

open access: yesApplied Sciences, 2020
For improving the performance of an electromagnetic isolation system with reasonable parameters and avoid the parameter tuning problem of a PID controller, an active control method is put forward based on equivalent stiffness and damping coefficient.
Lei Zhang, Xiangtao Zhuan
doaj   +4 more sources

The numerical calculation method based on equivalent frequency-independent time-domain damping model

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2022
In order to realize the time-domain analysis based on hysteretic damping model, the frequency-independent time-domain damping model of single degree of freedom (SDOF) system is constructed.
Panxu Sun, Shuxia Wang, Dongwei Wang
doaj   +2 more sources

A time-domain method for free vibration responses of an equivalent viscous damped system based on a complex damping model

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2023
The free vibration responses are divergent based on a complex time-domain damping model. The traditional step by step integration method cannot be used to calculate the time-domain responses.
Shuxia Wang   +4 more
doaj   +2 more sources

Developing and Applying a Double Triangular Damping Device with Equivalent Negative Stiffness for Base-Isolated Buildings

open access: yesBuildings, 2023
A passive double triangular damping (DTD) device with equivalent negative stiffness is proposed in this study. The DTD device consists of transmission systems and triangular damping systems.
Tianwei Sun   +3 more
doaj   +2 more sources

Time-Domain Calculation Method of an Equivalent Viscous Damping Model Based on Complex Damping Model

open access: yesShanghai Jiaotong Daxue xuebao, 2021
The damping matrix of the complex damping model is easy to be constructed, which only depends on the material loss factor and the structural stiffness matrix.
SUN Panxu, YANG Hong, ZHAO Zhiming, LIU Qinglin
doaj   +1 more source

Research on Damping Characteristics of Interconnected Hydropneumatic Suspension considering the Effects of Hose and Check Valve

open access: yesShock and Vibration, 2021
The interconnected hydropneumatic suspension (ICHPS) has not only the nonlinear stiffness and damping of the independent hydropneumatic suspension (IDHPS) but also antiroll and antipitch functions.
Hongmin Zhang, Xin Fang
doaj   +1 more source

Damping of Steel Eccentrically Braced Frames in Direct Displacement-Based Design [PDF]

open access: yesNumerical Methods in Civil Engineering, 2018
Due to the limitations and deficiencies in the force-based design approach, several methods are introduced and examined in order to improve this methodology. However, over the years, researchers have proposed displacement-based design methods. Among them,
B. Rezayibana, M. Yahyai
doaj   +1 more source

Modeling and experimental analysis of particle damping phononic crystal plate

open access: yesAIP Advances, 2021
A phononic crystal with particle assembly dampers was constructed. A high-speed camera was used to record and observe the vibration phenomenon of the particle assembly under external excitation.
Yuanchao Zhang   +5 more
doaj   +1 more source

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