Summary
By separating the drift coefficients in the Fokker-Planck equation into two parts, one associated with the vanishing probability flow and another with the circulatory probability flow, a method is devised to obtain the exact stationary-state solutions for nonlinear systems under either external or parametric Gaussian white-noise excitations, or both. The conditions under which the method is applicable are less restrictive than the conditions for detailed balance which was used previously to develope a similar method; therefore, the solvable class is broader. Two schemes are then discussed for obtaining approximate solutions which may be either stationary or transient: (1) cumulant closure, and (2) generalized equivalent linearization.
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© 1988 Springer-Verlag Berlin Heidelberg
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Lin, Y.K., Yong, Y., Cai, G.Q., Brückner, A. (1988). Exact and Approximate Solutions for Response of Nonlinear Systems Under Parametric and External White Noise Excitations. In: Ziegler, F., Schuëller, G.I. (eds) Nonlinear Stochastic Dynamic Engineering Systems. IUTAM Symposium. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-83334-2_23
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DOI: https://doi.org/10.1007/978-3-642-83334-2_23
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