Results 161 to 170 of about 1,212 (196)

Equivalent Viscous Damping for a Bilinear Hysteretic Oscillator

Journal of Engineering Mechanics, 2000
A bilinear hysteretic model is commonly used to study elastoplastic structures. In this paper, a damped, bilinear hysteretic oscillator is studied under harmonic loading. We show the existence of an equivalent viscous damping for small values of a loading parameter such that the associated linear structure and the hysteretic structure have the same ...
Reddy, CK, Pratap, R
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The Hysteretic Damping Model in Vibration Theory

Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 1991
The characterization of damping elements by differential or integral equations relating physical variables by transfer functions in the frequency domain and by impulse response functions in the time domain is carried out for the ideal viscous damper, the ideal hysteretic damper and the band-limited hysteretic damper.
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The effective period and damping of a class of hysteretic structures

Earthquake Engineering & Structural Dynamics, 1979
AbstractThis paper presents the results of a numerical investigation in which the maximum response of six hysteretic systems is calculated for an ensemble of twelve earthquakes. Inelastic response spectra are constructed for a range of response ductility. An effective linear period and damping are calculated for each system and ductility by determining
Wilfred D. Iwan, Nathan C. Gates
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The Effect of Viscous and Hysteretic Damping on Rotor Stability

Volume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education, 2000
A rotordynamic finite element program has been modified to include internal viscous and hysteretic damping. A numerical study has been done on a rotor system with variable external damping to predict the effect of various amounts of internal viscous and hysteretic damping on rotor stability. Three cases are considered: (1) external viscous damping with
Anthony M. Cerminaro, Frederick C. Nelson   +1 more
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Hysteretic damping in an elastic body with frictional microcracks

International Journal of Mechanical Sciences, 2016
Abstract Material stress strain curves often show dissipation via rate-independent hysteresis. Here we study an elastic plate with several randomly distributed and oriented frictional microcracks, loaded cyclically in plane stress. Computational solutions in ABAQUS show narrow hysteresis loops. Unlike the loops from Rowett׳s classic experiment (1914),
Saurabh Biswas, Prasun Jana, Anindya Chatterjee   +2 more
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The Use of Complex Stiffnesses for Hysteretic Damping

1998
Abstract : This technical treatise has exemplified a response spectrum method that is particularly suited for spring-mass-damping systems excited by one or more base or ground disturbances characterized by displacements. It offers an alternative to the conventional response spectrum method, which is best suited for a single prescribed ground ...
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TIME-DOMAIN ANALYSIS OF LINEAR HYSTERETIC DAMPING

Earthquake Engineering & Structural Dynamics, 1996
Two linear-hysteretic-damping models that provide energy dissipation independent of the deformation frequency, are studied in this paper: a hysteretic Kelvin element and a hysteretic Maxwell element. Both models use the Hilbert transform and yield integro-differential equations for the equations of motion of structures when real-valued signals are ...
J. A. INAUDI, N. MAKRIS
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Elastodynamics with hysteretic damping

2002
A study of elastic wave motion in a dissipative medium, generated by surface forces is carried out in the present thesis. The main characteristic of the medium considered here, is that the dissipation of energy due to dynamic loads is not linearly proportional to the frequency.
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Analysis of Hysteretic Damping Using Analytic Signals

Journal of Engineering Mechanics, 1997
The purpose of this technical note is to present a time-domain formulation for linear hysteretic damping. The integro-differential equations that govern the dynamics of structures with linear hysteretic damping are transformed into ordinary differential equations in analytic signals—that is, complex-valued signals in which the real and imaginary parts ...
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A new hysteretic damping model and application for the combined finite-discrete element method (FDEM)

Engineering Analysis With Boundary Elements, 2021
Penghai Deng, Quansheng Liu, Xing Huang   +2 more
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