Results 21 to 30 of about 44,670 (307)
Experimental and computational evaluation of modal identification techniques for structural damping estimation [PDF]
E3S Web of Conferences, 2022 The damping ratio is a key indicator of a structures susceptability to human discomfort due to dynamic loads. Computational models, wind tunnel studies and empirical data can provide estimates of the damping ratio of a structure.
Moore Hollie +2 more
doaj +1 more source
Yantu gongcheng xuebao, 2017 The dynamic shear modulus and damping ratio are the two main parameters for describing the dynamic characteristics of soil. The tests on the saturated sand under isotropically consolidation by TSH-100 resonant column apparatus made by GCTS Instruments ...
BI Sheng , CHEN Guo-xing , ZHOU Zheng-long , WU Qi
doaj +1 more source
Shock 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
Buildings, 2022 In this paper, the mechanical model of grotto–eave system with cable inerter viscous damper (CIVD) is established, and the vibration control equations are established. Firstly, the stochastic response is carried out, and the optimization design of design
Jizhong Huang +4 more
doaj +1 more source
Enhancing stability control of Phase-Locked loop in weak power grids
International Journal of Electrical Power & Energy SystemsThis paper analyzes the factors affecting the stability of phase-locked loops (PLLs) in weak power grids. By establishing a PLL model in weak power grids, it is found that line impedance, grid frequency disturbances, and output power all have an impact ...
Andong Liu, Hongbo Cao, Jun Liu
doaj +1 more source
An Investigation on the Damping Ratio of Marine Oil Slicks in Synthetic Aperture Radar Imagery
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023 The damping ratio has recently been used to indicate the relative internal oil thickness within oil slicks observed in synthetic aperture radar (SAR) imagery.
Cornelius Quigley +2 more
doaj +1 more source
工程科学与技术, 2023 In order to evaluate the stability of roadbed in frozen soil area, the dynamic shear modulus and damping ratio of fill along Qinghai—Tibet railway are analyzed by means of laboratory test and theoretical analysis.
Liang DONG +4 more
doaj
Journal of System Design and Dynamics, 2008 A number of different structures in industrial facilities are installed on supports. There is the case that the damage occurs by the coupled vibration. The response magnification is obtained from the modal natural frequency and the modal damping ratio of the coupled system in the seismic design.
WATANABE, Tetsuya +2 more
openaire +2 more sources
Modified Pyke's hysteretic model considering damping ratio
Yantu gongcheng xuebao, 2019 The damping ratio is a dynamic soil property that indicates the capacity of energy dissipation under cyclic loadings, and it plays an important role in dynamic response analysis of sites and soil-structure systems.
LIU Fang-cheng 1, YANG Jun 2, WU Meng-tao 1,3
doaj +1 more source
Buildings, 2022 In this paper, parameter analyses of a tuned inerter damper (TID) are carried out based on the displacement mitigation ratio. The optimal design of TID based on the closed-form solution method is carried out and compared with the fixed-point method ...
Ruoyu Zhang +4 more
doaj +1 more source