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Random vibration and statistical linearization

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TLDR
In this paper, a comprehensive account of statistical linearization with related techniques allowing the solution of a very wide variety of practical non-linear random vibration problems is given, and the principal value of these methods is that they are readily generalized to deal with complex mechanical and structural systems and complex types of excitation such as earthquakes.
Abstract
Interest in the study of random vibration problems using the concepts of stochastic process theory has grown rapidly due to the need to design structures and machinery which can operate reliably when subjected to random loads, for example winds and earthquakes. This is the first comprehensive account of statistical linearization - powerful and versatile methods with related techniques allowing the solution of a very wide variety of practical non-linear random vibration problems. The principal value of these methods is that unlike other analytical methods, they are readily generalized to deal with complex mechanical and structural systems and complex types of excitation such as earthquakes.

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Journal ArticleDOI

Estimation of hysteretic damping of structures by stochastic subspace identification

TL;DR: In this article, an output-only system identification method was proposed for random response of dynamic systems with hysteretic damping, where the restoring force was represented by the Bouc-Wen model, for which an equivalent linear relaxation model was derived.
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Modal identification of weakly non-linear multidimensional dynamical systems using a stochastic linearisation method with random coefficients

TL;DR: In this paper, the authors present an identification procedure based on the use of a stochastic linearisation method with random coefficients. But this method can give an incorrect identification of the matrix-valued spectral density functions.
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Spectral response of asymmetrical random oscillators

TL;DR: In this paper, an analytical procedure to estimate the power spectral density (PSD) response of a weakly damped oscillator with a nonlinear asymmetrical restoring force under external stochastic wide-band excitation is presented.
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Random vibration with inelastic impact: equivalent nonlinearization technique

TL;DR: In this paper, a modified Hertzian contact model with inelastic impact is proposed to analyze the dynamic response of a vibrating system with elastic impact, and the stationary probability density of any element is attainable.
Journal ArticleDOI

Probabilistic evaluation approach for nonlinear vehicle–bridge dynamic performances

TL;DR: In this article, the authors derived a vehicle-bridge coupled dynamic equation using the principle of virtual work utilizing a linearized wheel-rail contact equation to calculate the system random lateral responses through the pseudo-excitation method.