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Budgor A.B., Lindenberg K., Shuler K.E. — Studies in nonlinear stochastic processes. II. The duffing oscillator revisited
Budgor A.B., Lindenberg K., Shuler K.E. — Studies in nonlinear stochastic processes. II. The duffing oscillator revisited



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Название: Studies in nonlinear stochastic processes. II. The duffing oscillator revisited

Авторы: Budgor A.B., Lindenberg K., Shuler K.E.

Аннотация:

We have applied the approximation method of statistical linearization and various higher order corrections thereto to the study of a nonlinear oscillator perturbed by Gaussian, delta-correlated noise. We compute the second-order statistics of the response, i.e., the variances, autocorrelation functions, and spectral densities for various forms of the nonlinearity and compare our results with the few more exact calculations which are available in the literature. We show that a very simple modification of statistical linearization, based upon the use of the variance as obtained from the appropriate Fokker-Planck equation, yields results which are in better agreement with the exact literature results than either statistical linearization or first-order corrections thereto. This modified method of statistical linearization has the significant advantage of great computational simplicity as compared to other attempts of accurate calculations of second-order statistics of nonlinear stochastic equations now in the literature.


Язык: en

Рубрика: Математика/

Тип: Статья

Статус предметного указателя: Неизвестно

ed2k: ed2k stats

Год издания: 1976

Количество страниц: 17

Добавлена в каталог: 11.03.2012

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