Results 11 to 20 of about 44,670 (307)

Parameters Influence of New Particle Damper-based Fastener on its Damping Ratio

open access: yesChengshi guidao jiaotong yanjiu
[Objective] Fastener stiffness and damping are important factors affecting rail system vibration and wheel-rail noise, especially the fastener damping can directly affects the high frequency attenuation rate of the rail structure (rail noise) and the ...
YAO Yuyang   +3 more
doaj   +2 more sources

Evolution of the Damping Ratio Considering Cyclic Confining Pressure Under Intermittent Cyclic Loading

open access: yesBuildings
The damping ratio is essential to conducting dynamic analysis for underground engineering under traffic loading. Variations in the damping ratio are usually studied using cyclic triaxial tests with continuous cyclic loading; however, intermittent loading
Juehao Huang   +5 more
doaj   +2 more sources

Calculation of Damping Ratio and Analysis of Damping Effect of Turbine Blade Dry Friction Damper in Rotating State

open access: yesAerospace
The vibration of turbine blades during the operation of jet engines is a serious and complex issue that has garnered significant attention. In practical jet engines, dry friction damping is commonly used to suppress blade vibrations due to its ...
Di Li   +5 more
doaj   +2 more sources

On the robustness of the average power ratios in damping estimation: application in the structural health monitoring of composites beams [PDF]

open access: yes, 2010
In composites structures, cracking, delamination will cause changes in the measured dynamic response of structure and so on experimentally modal parameters.
J. Morlier   +4 more
core   +1 more source

Effects of Damping and Reynolds Number on Vortex-Induced Vibrations [PDF]

open access: yes, 2007
Vortex-induced vibrations have been studied experimentally with emphasis on damping and Reynolds number effects. Our system was an elastically-mounted rigid circular cylinder, free to oscillate only transverse to the flow direction, with very low ...
Klamo, Joseph Thomas
core   +1 more source

Experimental Study on the Dynamic Modulus and Damping Ratio of Compacted Loess under Circular Dynamic Stress Paths

open access: yesAdvances in Civil Engineering, 2021
Dynamic loads such as earthquakes and traffic will simultaneously generate vertical dynamic stress and horizontal shear stress in the foundation soil. When the vertical dynamic stress amplitude is twice the horizontal shear dynamic stress amplitude, and ...
Liguo Yang, Shengjun Shao, Zhi Wang
doaj   +1 more source

Modal damping ratio of symmetric laminate composite under the effect of attached mass using experimental design [PDF]

open access: yesFME Transactions, 2021
Nowadays, the use of composite materials has taken a large place in civilian industries as well as in military and aerospace industries. Therefore, significant investigations about their mechanical and physical properties are needed.
Abdelhafid Rahmane
doaj   +1 more source

Decomposition of process damping ratios and verification of process damping model for chatter vibration [PDF]

open access: yesMeasurement, 2012
In the previous study, by the same authors, titled ‘‘A new process damping model (PDM) for chatter vibration (Measurement, 44 (8) (2011) 1342–1348)’’, a new approach has been presented for obtaining process damping ratios (PDRs). This PDM has been constituted on the basis of the shear angle ðuÞ oscillations of the cutting tool and the alteration of the
Türkeş, Erol   +3 more
openaire   +4 more sources

Experimental Study of Awash Soil under Static and Cyclic Shear Loading

open access: yesAdvances in Civil Engineering, 2023
The dynamic soil properties (shear modulus and damping ratio) are of great importance for the analysis and design of geotechnical structures subjected to dynamic loads such as earthquake. Cyclic simple shear tests were conducted to study the variation of
Tigistu Abu Arficho, Argaw Asha Ashango
doaj   +1 more source

Comparative Analysis of Viscous Damping Model and Hysteretic Damping Model

open access: yesApplied Sciences, 2022
A damping model is one of the key factors in dynamic analysis. Viscous damping and hysteretic damping models are commonly used in structural damping models.
Qinglin Liu   +3 more
doaj   +1 more source

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