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Prediction models and associated uncertainty for dynamic shear modulus and damping ratio of Beijing silty clay [PDF]
Scientific ReportsBased on experimental data of normalized shear modulus and damping ratio from undisturbed silty clay within 120 m depth in the Beijing area, the Davidenkov backbone curve is used to characterize the normalized shear modulus curve, and the damping ratio ...
Yi Fang +7 more
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Damping Ratio Estimation of Heavily Damped Structures Using State-Space Modal Responses. [PDF]
Sensors (Basel)Vibration control systems are extensively utilized in structures to enhance their resilience against earthquakes and wind forces. However, structures with significant damping exhibit atypical damping behaviors, which impose constraints on the effectiveness of traditional modal analysis methods for discerning modal responses and estimating properties ...
Noh J, Hwang JS, Valluzzi MR.
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Yantu gongcheng xuebao, 2022 Traffic loading is usually simulated by single cyclic deviator stress. However, the vertical normal stress and horizontal stress acting on the soil elements are all varied cyclically under the traffic loading.
HUANG Jue-hao 1, 2, CHEN Jian 1, 2, 3, YU Song 4, YAN Xiao-ling 5, 1, ZHAO Yong-feng 4, FU Xiao-dong 1, 2, MA Chao 1
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Time-Domain Calculation Method of an Equivalent Viscous Damping Model Based on Complex Damping Model
Shanghai 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
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Energies, 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
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Investigation of the effects of value and modeling approach of natural damping on nonlinear responses of low rise moment-resisting steel frames [PDF]
Journal of Structural and Construction Engineering, 2021 Nonlinear time history analysis is recognized as the most appropriate tool for assessing the real behaviour of structures during seismic excitations. Validity rate of obtained results from this analysis significantly depends to the modeling, details and ...
Saman Rahat Dahmardeh +2 more
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International Journal of Naval Architecture and Ocean Engineering, 2022 The hydrodynamic damping characteristics of elastic rotating propeller blades are investigated theoretically and experimentally. Firstly, the modal hydrodynamic damping ratio of propeller blade rotating in water is theoretically predicted based on the ...
Hongyang Chen +3 more
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Experimental Study on Damping Ratio Characteristics of Loose Silty Fine Sand at Different Saturations [PDF]
长江科学院院报[Objective] Current research on the damping ratio evolution of silty fine sand under varying saturation conditions remains relatively limited, and in particular, systematic investigations revealing the mechanisms by which saturation variations influence ...
YU Song, XU Meng-bing, FENG Zhi-guo, ZHANG Jun-jie, ZHANG Guo-chao, WANG Yong
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Damping ratio estimation using hybrid methods [PDF]
Mechanical Systems and Signal Processing, 1990 Abstract Much effort has been expended in attempts to estimate dynamic response parameters of structures. Damping ratios have been estimated with varying degrees of success. Some of this effort has been motivated by active research and development of structural integrity monitoring systems, for design purposes, accurate estimates of damping ratios ...
Shen, Chien-Chih, Liou, Cheng-Yuan
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Seismology of Standing Kink Oscillations of Solar Prominence Fine Structures [PDF]
, 2010 We investigate standing kink magnetohydrodynamic (MHD) oscillations in a prominence fine structure modeled as a straight and cylindrical magnetic tube only partially filled with the prominence material, and with its ends fixed at two rigid walls ...
Abramowitz +34 more
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