Results 241 to 250 of about 22,087 (289)

Equivalent damping of bilinear hysteretic SDOF system considering the influence of initial elastic damping

Soil Dynamics and Earthquake Engineering, 2017
Abstract The premise of equivalent linearization method is that the peak response of an inelastic system can be estimated as the peak response of a linear elastic system having reduced stiffness and increased damping. Different approaches have been used to determine the properties of the equivalent linear system, in particular the equivalent damping
Tao Liu, Bruno Briseghella, Qilin Zhang   +2 more
exaly   +4 more sources

Equivalent Viscous Damping of Bilinear Hysteretic Oscillators

Journal of Structural Engineering, 2015
AbstractAn improved formula to determine the equivalent viscous damping ratio of a single-degree-of-freedom (SDOF) bilinear oscillator is proposed in this paper, which simultaneously considers the influence of the initial period, ductility ratio, and strain hardening ratio.
Liu T., Zordan T., Zhang Q., Briseghella B.   +3 more
openaire   +3 more sources

Hysteretic damping in rotordynamics: An equivalent formulation

Journal of Sound and Vibration, 2010
The hysteretic damping model cannot be applied to time domain dynamic simulations: this is a well-known feature that has been discussed in the literature since the time when analog computers were widespread. The constant equivalent damping often introduced to overcome this problem is also discussed, and its limitations are stated, in particular those ...
Giancarlo Genta, Nicola Amati
openaire   +2 more sources

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Jacobsen's equivalent damping concept revisited

Soil Dynamics and Earthquake Engineering, 2018
Abstract The equivalent damping concept originally proposed by Lydik Jacobsen in 1930 is revisited in order to be of use in the seismic analysis of building structures. After briefly recalling that the equivalent damping is obtained by a linearization of a frequency response transfer function and can be deformation-dependent, the paper is then ...
George A Papagiannopoulos
exaly   +2 more sources

An equivalent circuit for Landau damping

Journal of Applied Physics, 1976
An equivalent circuit simulating the effect of Landau damping in a stable plasma-loaded parallel-plate capacitor is presented. The circuit contains a double infinity of LC components. The transition from stable to unstable plasmas is simulated by the introduction of active elements into the circuit.
H. L. Pécseli, Pécseli, Hans
openaire   +2 more sources

The Equivalent Damping Ration in Capacity Spectrum Method

Advanced Materials Research, 2010
Study the calculation method of equivalent damping ratio in Capacity Spectrum Method. Analyzing the feature of several methods for the calculation of equivalent damping ratio in the world, from the numeral example, the numeral results of several calculation methods of equivalent damping ratio are compared to the results of time course method.
Jing Zhang, Duixian Gao, Zhiwei Chen
openaire   +2 more sources

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
openaire   +2 more sources

EQUIVALENT VISCOUS DAMPING FOR NON-STRUCTURAL BUILDING ELEMENTS

, 2020
Earthquakes that have struck densely built regions during the last decades in highly populated regions have demonstrated the need for reliable methodologies to perform the seismic design of non-structural building elements that are damaged due to inertia forces arising from horizontal floor accelerations.
Roberto Javier Merino Vela, Daniele Perrone, Andre Filiatrault   +2 more
openaire   +3 more sources

Equivalent circuit parameter extraction of low‐capacitance high‐damping PTs [PDF]

Electronics Letters, 2020
Existing equivalent circuit extraction techniques are inaccurate for piezoelectric transformers (PTs) with low-input capacitance or high damping. A new method is presented, offering improved accuracy in both damping resistance and resonant frequency ...
Linhao Li, Jonathan N Davidson, M P Foster   +2 more
exaly   +2 more sources

Performance of equivalent frequency-dependent damping

World Haptics 2009 - Third Joint EuroHaptics conference and Symposium on Haptic Interfaces for Virtual Environment and Teleoperator Systems, 2009
An analog input shaper (AIS) was proposed as a means for increasing the virtual impedance range that could be stably displayed by haptic interfaces. The AIS reduces high frequency inputs to haptic interfaces, since high frequency inputs that usually occur during collisions with very stiff virtual objects can induce instabilities. The AIS is composed of
Yo-An Lim, Hyo-Sung Ahn, Jeha Ryu
openaire   +1 more source