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O. Univ, G Schuëller, At, C. Proppe, H. Pradlwarter, G. Schuëller, Equivalent
Chair of Engineering Mechanics Ifm-publication 2-353 Equivalent Linearization and Monte Carlo Simulation in Stochastic Dynamics
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AbstractThis paper applied the idea of block pulse (BP) transform in the equivalent linearization of a nonlinear system. The BP transform gives effective tools to approximate complex problems. The main goal of this work is on using BP transform properties in process of linearization. The accuracy of the proposed method compared with the other equivalent linearization including the stochastic equivalent linearization and the regulation linearization methods. Numerical simulations are applied to the nonlinear Van der Pol oscillator system under Gaussian white noise excitation to demonstrate the feasibility of the present method. Different values of nonlinearity are considered to show the effectiveness of the present method. Besides, by comparing the mean-square responses for divers values of nonlinearity and excitation intensity depicted the present method is able to approximate the behavior of nonlinear system and is in agreement with other methods.
Nonlinear Engineering – de Gruyter
Published: Jun 1, 2016
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