Results 11 to 20 of about 22,087 (289)

Equivalent Modal Damping Ratios of a Composite Tube-Type Tall Building to Dynamic Wind Loading [PDF]

Shock and Vibration, 1996
This article discusses computing methods of the equivalent modal damping ratio for a composite tube-type tall building. The equivalent damping ratio of a composite structure under wind-induced vibrations encompasses the combined effects from the ...
B.C. Huang, K.M. Lam, A.Y.T. Leung, Y.K. Cheung   +3 more
doaj   +2 more sources

A time-domain integration method with equivalent complex damping model based on viscoelastic material constitutive relation

Journal of Low Frequency Noise, Vibration and Active Control
The complex damping model is only applied in frequency-domain. Based on the constitutive relation of viscoelastic materials, a vibration equation is equivalent to the constitutive relation of complex damping theory and the frequency response function ...
Jia Fan, Shuxia Wang, Panxu Sun
doaj   +2 more sources

Equivalent Nonlinearization Technique for Random Analysis of Nonlinear System With Fractional Derivative Damping

Shock and Vibration
Solving nonlinear systems with fractional derivative damping is often challenging, particularly in cases of strong damping and excitation. To derive solutions for such strong nonlinear systems more concisely, this manuscript presents an approximate ...
Ming Xu
doaj   +2 more sources

Equivalent Representation Form of Oscillators with Elastic and Damping Nonlinear Terms [PDF]

Mathematical Problems in Engineering, 2013
In this work we consider the nonlinear equivalent representation form of oscillators that exhibit nonlinearities in both the elastic and the damping terms. The nonlinear damping effects are considered to be described by fractional power velocity terms which provide better predictions of the dissipative effects observed in some physical systems.
ALEX ELIAS ZUÑIGA;19150, DANIEL OLVERA TREJO;269684, OSCAR MARTINEZ ROMERO;278430, ALEX ELIAS ZUÑIGA;19150, DANIEL OLVERA TREJO;269684, OSCAR MARTINEZ ROMERO;278430   +5 more
core   +6 more sources

Validation of equivalent viscous damping methodologies [PDF]

CEAS Space Journal, 2013
An important step in the design and verification process of spacecraft structures is the coupled dynamic analysis with the launch vehicle in the low-frequency domain. To obtain accurate predictions of the satellite’s dynamic environment, it is essential that the damping of the system is correctly defined and taken into account within the resolution ...
Xavier Vaquer Araujo, Sebastiaan H. J. A. Fransen, Sylvain Germès, Nicolas Thiry   +3 more
openaire   +1 more source

AN EQUIVALENT VISCOUS DAMPING PROPOSAL FOR BLOCK-BASED ROCKING MODELS [PDF]

Proceedings of the 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COMPDYN 2015), 2021
Masonry structures have been observed to display a high vulnerability to failure under seismic action. This stems from the fact that their structural configurations usually lack adequate connections among the distinct elements, resulting in the formation of local mechanisms experiencing Out-Of-Plane (OOP) collapse. In this context, rocking dynamics has
Vlachakis, Georgios, Colombo, Carla, Giouvanidis, Anastasios, Mehrotra, Anjali, Savalle, Nathanael, Lourenço, Paulo B.   +5 more
openaire   +2 more sources

An analytical frequency‐domain model of aerodynamic mass and damping of floating wind turbines

Wind Energy, 2023
The fore‐aft motion of the rotor‐nacelle assembly (RNA) of a rotating floating wind turbine (FWT) can cause an oscillation in aerodynamic thrust, which may be equivalently treated as frequency‐dependent aerodynamic mass and damping effects. In this study,
Can Yang, Longfei Xiao, Peng Chen, Zhengshun Cheng, Mingyue Liu, Lei Liu   +5 more
doaj   +1 more source

A study of joint damping in metal plates [PDF]

, 2009
For satellite applications the determination of the correct dynamic behaviour and in particular the structural damping is important to assess the vibration environment for the spacecraft subsystems and ultimately their capability to withstand the launch ...
Cunningham, Paul, Aglietti, GS, Walker, SJI, Cunningham, P, Aglietti, Guglielmo S., Walker, Scott J.I.   +5 more
core   +1 more source

Effect of Adding a Styrene-Butadiene Rubber Damper to A Sled Sample and Extraction of Its Equivalent Stiffness and Damping [PDF]

International Journal of Advanced Design and Manufacturing Technology, 2023
Protection of sled systems from destructive vibrations is inevitably under attraction due to the importance of sled testing in the aerospace industry. A pair of SBR dampers were used between the slipper and the sled body to reduce vertical vibrations, so
Mohammad Reza Najafi, Saied Mahjoub Moghadas   +1 more
doaj   +1 more source

Evaluating Equivalent Damping and Response Modification Factors of Frames Equipped by Pall Friction Dampers [PDF]

Journal of Rehabilitation in Civil Engineering, 2013
A study on the evaluating equivalent damping and response modification factors of frames equipped by Pall Friction Dampers is presented. To do so, buildings with various stories were considered. Nonlinear and linear dynamic time history analysis has been
M. Mahmoudi, A. Mirzaei, S. Vosough
doaj   +1 more source