Results 151 to 160 of about 2,512 (192)

Topological hysteresis as a model for Rayleigh damping

Materials Science and Engineering: A, 2006
Abstract To account for the large magnetomechanical damping of demagnetized specimens, we propose as a model Landau's arrangement of magnetic domains with no overall magnetic moment. To analyze the model, we use the nature of magnetostriction to transform the data from internal friction, Q −1 , and strain amplitude, ɛ , into energy loss and volume
D.N. Beshers, G.B. Vunni
openaire   +1 more source

The damping Helmholtz–Rayleigh–Duffing oscillator with the non-perturbative approach

Mathematics and Computers in Simulation, 2022
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

The material damping as Rayleigh damping in the vibrations of square and rectangular metalic plates

2018 Advances in Science and Engineering Technology International Conferences (ASET), 2018
In this paper, an experimental investigation is carried out on square and rectangular plates of different materials with various edge conditions to estimate the Rayleigh damping coefficients. The determination of Rayleigh damping coefficients has become an important aspect of the dynamical analysis of delicate mechanical structural elements such as ...
Najeeb U. Khan, P. Bangaru Babu
openaire   +1 more source

Suboptimal Rayleigh damping coefficients in seismic analysis of viscously-damped structures

Earthquake Engineering and Engineering Vibration, 2014
An optimization method for the consistent evaluation of two Rayleigh damping coefficients is proposed. By minimizing an objective function such as an error term of the peak displacement of a structure, the two coefficients can be determined with response spectral analysis. The optimization method degenerates into the conventional method used in current
Danguang Pan, Genda Chen, Zuocai Wang
openaire   +1 more source

Magnetoelastic coupling and Rayleigh damping

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, 2004
This paper presents a magnetoelastic dynamic FE model. As first approach, the effect of magnetostriction and strong coupling is not considered. The effect of Rayleigh damping factors on the vibrational behaviour of the stator core of a synchronous generator is studied using the presented model.
openaire   +2 more sources

Analysis of proportional damping or Rayleigh damping on damped and undamped systems

2017 Fifth International Conference on Aerospace Science & Engineering (ICASE), 2017
Damping mechanisms have been active areas of research for a long time in history, despite this its understanding is still rudimentary as compared to the other traits of modeling. The actual problem is that even now it is not clear, which state variables are relevant for the computation of damping forces, which makes it very difficult to model in Finite
openaire   +1 more source

Viscosity Tensor Approach to the Damping of Rayleigh Waves

Journal of Applied Physics, 1969
An expression for the attenuation of a generalized Rayleigh wave has been obtained in terms of a viscosity tensor. The values of the viscosity components for Quartz obtained from measurements on bulk waves have been used to calculate the attenuation of several surface waves on that material.
P. J. King, F. W. Sheard
openaire   +1 more source

Effects of Rayleigh Damping on the Subgrade’s Apparent Nonlinearity

Journal of Transportation Engineering, Part B: Pavements, 2020
AbstractThe effect of the subgrade’s apparent (superficial) nonlinearity captured during falling weight deflectometer (FWD) testing has been a major challenge for pavement engineers in trying to ba...
Gabriel Bazi, Jeffrey Gagnon, Peter Sebaaly, Per Ullidtz   +3 more
openaire   +1 more source

On the use of Rayleigh damping for seismic analysis

Proceedings of the Institution of Civil Engineers - Engineering and Computational Mechanics, 2009
Rayleigh damping is widely used for dynamic analysis of structures. Although it is based on a simple formula, the use of Rayleigh damping for seismic analysis involves a hidden complication, which is commonly overlooked both in theory and in practice. The complication arises because mass-proportional damping introduces an extra term into the equations ...
openaire   +1 more source

Problems with Rayleigh Damping in Base-Isolated Buildings

Journal of Structural Engineering, 2008
In dynamic analysis, the energy dissipation in a base-isolated building is typically accounted for by allocating damping properties independently to the superstructure and to the isolation system. Rayleigh damping applied to the superstructure component alone is often used to represent the superstructure energy dissipation.
Keri L. Ryan, Jose Polanco
openaire   +1 more source