Results 31 to 40 of about 191,827 (344)

Identification and modelling of dynamic parameters for round link chains subject to axial loads

open access: yesScientific Reports, 2022
A round link chain subject to axial dynamic loads composes a nonlinear viscoelastic system. Unlike the classical pounding problems, the round link chain will not only suffer linear elastic deformation, but also nonlinear plastic or impacting deformation.
Kun Zhang   +5 more
doaj   +1 more source

Excitation of nonlinear ion acoustic waves in CH plasmas

open access: yes, 2016
Excitation of nonlinear ion acoustic wave (IAW) by an external electric field is demonstrated by Vlasov simulation. The frequency calculated by the dispersion relation with no damping is verified much closer to the resonance frequency of the small ...
Feng, Q. S.   +5 more
core   +2 more sources

Global attractors for the one dimensional wave equation with displacement dependent damping

open access: yes, 2010
We study the long-time behavior of solutions of the one dimensional wave equation with nonlinear damping coefficient. We prove that if the damping coefficient function is strictly positive near the origin then this equation possesses a global ...
Arrietta   +10 more
core   +1 more source

An overview of modern seismic analyses with different ways of damping introduction [PDF]

open access: yesGrađevinski Materijali i Konstrukcije, 2017
The authors of the paper, on the basis of the analysis of a large number of scientific papers, presented their original systematization of seismic analyses of structures, where a large number of them were developed during the last twenty years.
Ćosić Mladen   +2 more
doaj   +1 more source

Hopfield Neural Networks for Online Constrained Parameter Estimation With Time‐Varying Dynamics and Disturbances

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView.
This paper proposes two projector‐based Hopfield neural network (HNN) estimators for online, constrained parameter estimation under time‐varying data, additive disturbances, and slowly drifting physical parameters. The first is a constraint‐aware HNN that enforces linear equalities and inequalities (via slack neurons) and continuously tracks the ...
Miguel Pedro Silva
wiley   +1 more source

A novel nonlinear approach to suppress resonant vibrations [PDF]

open access: yes, 2007
A novel approach to suppress resonant vibration is presented by employing a single degree of freedom transmissibility system which utilizes a nonlinear damping element. Studies have shown that the nonlinear damping element can reduce the output energy at
Billings, S.A.   +3 more
core   +1 more source

On damping created by heterogeneous yielding in the numerical analysis of nonlinear reinforced concrete frame elements

open access: yes, 2015
In the dynamic analysis of structural engineering systems, it is common practice to introduce damping models to reproduce experimentally observed features.
Cottereau, Régis, Jehel, Pierre
core   +3 more sources

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

open access: yesShock 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   +1 more source

Modeling the Dynamics of a Passenger Car Using Experimental Data on Nonlinear Passive Shock Absorbers

open access: yesAutomotive Experiences
This study explores the dynamic response of passenger cars equipped with nonlinear passive shock absorbers, emphasizing the nonlinear damping characteristics over traditional linear models in simulating real-world driving conditions.
Avicenna An-Nizhami   +7 more
doaj   +1 more source

Multi-level residue harmonic balance method for nonlinear vibration of the beam

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2022
This study presents the nonlinear vibration and chaotic response of a beam subjected to harmonic excitation. The multi-level residue harmonic balance method is applied to solve the geometrically cubic nonlinear vibration of the simply supported beam. The
Abu SMZ Hasan, M S Rahman
doaj   +1 more source

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