Numerical Estimation of Torsional Dynamic Coefficients of a Hydraulic Turbine by Martin Karlsson, Håkan Nilsson, Jan-Olov Aidanpää

“…The contribution to the damping ratio varies between 30–80% depending on the load. …”
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Eigenpath Following for Systems with Symmetric Complex-Valued Stiffness Matrices by U. Miller, S. Bograd, A. Schmidt, L. Gaul

“…The outcome of the solution is the graphical presentation of continuous eigenvalue paths, showing the change in the eigenvalues from the undamped to the fully damped case. For every undamped eigenvalue exists its equivalent eigenfrequency and damping factor that can be used for further numerical analysis.…”
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Seismic Response and Vibration Reduction Analysis of Suspended Structure under Wave Passage Excitation by Wenhua Cai, Bujun Yu, Fajong Wu, Jianhua Shao

“…The research shows that the damping suspended structure has a good damping effect, and the amplitude reduction of the top displacement peak response is up to 15%, which corresponds to smaller apparent velocities. …”
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Dynamic Properties of Clean Sand Modified with Granulated Rubber by Dervis Volkan Okur, Seyfettin Umut Umu

“…The dynamic properties, such as the maximum shear modulus, strain-dependent shear modulus, and damping ratio, are examined. For practical purposes, simple empirical relationships were formulated to estimate the maximum shear modulus and the damping ratio. …”
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Energy Dissipation Contribution Modeling of Vibratory Behavior for Silicon Micromachined Gyroscope by J. Zhou, Q. Shen, J. B. Xie, P. P. Cao, W. Z. Yuan

“…First, the amount of independent damping dissipation consisting of thermoelastic loss, anchor loss, surface loss, Akhiezer loss, and air damping loss during vibration is obtained by simulation model, PML-based method, and numerical calculation, respectively. …”
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Comparison Study of Vibration Control Effects between Suspended Tuned Mass Damper and Particle Damper by Zheng Lu, Dianchao Wang, Peizhen Li

“…Increasing the mass ratio of the damper can improve the damping effects; under the condition of tuning frequency, the damping effects are remarkable. …”
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Experimental Assessment of a Skyhook Semiactive Strategy for Seismic Vibration Control of a Steel Structure by Nicola Caterino, Mariacristina Spizzuoco, Antonio Occhiuzzi, Antonio Bonati

“…Sky-hook damping is one of the most promising techniques for feedback control of structural vibrations. …”
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Sensitivity of Eigenvalues to Nonsymmetrical, Dissipative Control Matrices by Vernon H. Neubert

“…Dissipation of energy in vibrating structures can be accomplished with a combination of passive damping and active, constant gain, closed loop control forces. …”
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Evaluation of Seismic Response Trends from Long-Term Monitoring of Two Instrumented RC Buildings Including Soil-Structure Interaction by Faheem Butt, Piotr Omenzetter

“…SSI effects decreased the modal frequencies and increased some of the damping ratios.…”
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Dynamical Analysis Applied to Passive Control of Vibrations in a Structural Model Incorporating SMA-SE Coil Springs by Yuri J. O. Moraes, Antonio A. Silva, Marcelo C. Rodrigues, Antonio G. B. de Lima, Rômulo P. B. dos Reis, Paulo C. S. da Silva

“…These oscillations may become undesirable and may cause temporary and even irreversible damage to the system. There are several techniques to minimizing these vibration effects ranging from passive methods to the use of controllers with smart materials. …”
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Parametric study of rider’s comfort in a vehicle with semi-active suspension system under transient road conditions by Arinola Bola Ajayi, Ediketin Ojogho, Surajudeen Adedotun Adewusi, Sunday Joshua Ojolo, Julio Cesar Costa Campos, Antonio Marcos de Oliveira Siqueira

“…Results of simulation based on the parametric studies are presented and the vibration dose values evaluated to show the dependence of vehicle ride comfort on the characteristics of the various elements of the vehicle suspension such as stiffness and damping characteristics. The result showed that the variation of sprung mass and suspension stiffness of the vehicle had more significant effects on passenger discomfort than the variation of the unsprung mass. …”
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Stability Analysis of Symmetrical Rotors Partially Filled with a Viscous Incompressible Fluid by Zhu Changsheng

“…The effects of the parameters of rotor system, such as external damping ratio, fluid fill ratio, Reynolds number and mass ratio, on the unstable regions are analyzed. …”
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Design of a Robust Coordinated Power Oscillation Damper for Use with Large-Scale Wind Energy System Connected to a Multimachine Power System by Paul Kabiru, Keren Kaberere, Stanley Kamau

“…What is more, the use of strategy with a low computational burden to enhance the robustness of coordinated strategy for the design of damping controllers is rare. A coordinated strategy in designing multiple damping controllers, including DFIG-based power oscillation damper (POD) and power system stabilizers (PSSs), is proposed in this paper. …”
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Study on Influence of Diversified Parameters of Vehicle and Track on Wheel Hollow Wear by Yongjie Lu, Zongyu Gao, Jianxi Wang

“…Wheel hollow wear of high-speed train is one of the main damage types for the wheel. By optimizing the vehicle and track parameters and matching the wheel-rail profile, the hollow wear of wheel can be reduced. …”
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Estimation of Modal Properties of Low-Rise Buildings Using Ambient Excitation Measurements by K. K. Wijesundara, C. Negulescu, E. Foerster

“…However, it is difficult to obtain an accurate estimation of damping ratio directly from time-frequency decomposition of ambient vibration measurements using CWT. …”
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Optimization of VEDs for Vibration Control of Transmission Line Tower by Guoping Huang, Jianhua Hu, Yuzhu He, Haibo Liu, Xiugui Sun

“…Subsequently, the additional modal damping ratio of the transmission line tower attached with VEDs was obtained analytically. …”
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Vibrations of a Simply Supported Beam with a Fractional Viscoelastic Material Model – Supports Movement Excitation by Jan Freundlich

“…The studies show that the selection of appropriate damping coefficients and fractional derivative order of damping model enables us to fit more accurately dynamic characteristic of the beam in comparison with using integer order derivative damping model.…”
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Numerical Simulation of the Static and Dynamic Aerodynamics of a UAV under Wake Flows by Bai-gang Mi, Hao Zhan

“…The results demonstrate that both the steady and unsteady aerodynamics of the fly wing are affected by wake flows: wingtip vortices increase the lift-to-drag ratio and considerably change the dynamic damping; jet flow reduces both the static and dynamic damping; and propeller slipstream leads to slow variations in the dynamic damping and decreases in the lift-to-drag ratio.…”
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Beat Phenomenon Analysis of Concrete Beam with Piezoelectric Sensors by Xu Li, Linsheng Huo, Hongnan Li

“…As the damping ratios increased, the amplitude of beat signal will die out in an exponential decay. …”
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A Review of Indirect Bridge Monitoring Using Passing Vehicles by Abdollah Malekjafarian, Patrick J. McGetrick, Eugene J. OBrien

“…Most of the proposed methods are based on the identification of dynamic characteristics of the bridge from responses measured on the vehicle, such as natural frequency, mode shapes, and damping. In addition, some of the methods seek to directly detect bridge damage based on the interaction between the vehicle and bridge. …”
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