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- W3048133238 endingPage "103578" @default.
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- W3048133238 abstract "Abstract A path integration method is used to discuss the stochastic response of a marine riser excited parametrically and externally by correlated Gaussian white noises. On the basis of the nonlinear vibration equation of a marine riser, the first-order vibration mode is studied and its governing equation is formulated. The response probability density function (PDF) is further developed by a path integration method. During the solution procedure, the Gaussian closure method and the short-time Gaussian approximation method are used to develop the transition probability density function. The results of different time intervals are compared with the results of Monte-Carlo simulation (MCS) to determine the adequate time interval. After that, the path integration method with a Gauss–Legendre scheme is used to obtain the stationary PDF solution of displacement and velocity. The path integration solutions (PIS) are compared with those of the equivalent linearization method (EQL) and MCS. Five demonstrative cases are analyzed to evaluate the effectiveness of the path integration method. The influences of nonlinearity and excitations are considered. It shows that the results of PIS coincide better with the results of MCS than those of EQL. The analysis shows that parametric excitation causes the softening behavior of the PDF distribution compared with those of EQL. The increase of excitation correlation results in the nonsymmetrical PDF distribution of response. The increase of nonlinearity in displacement can lead the PDF of displacement to showing a hardening behavior." @default.
- W3048133238 created "2020-08-13" @default.
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- W3048133238 date "2020-11-01" @default.
- W3048133238 modified "2023-09-24" @default.
- W3048133238 title "Probabilistic analysis on parametric random vibration of a marine riser excited by correlated Gaussian white noises" @default.
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- W3048133238 doi "https://doi.org/10.1016/j.ijnonlinmec.2020.103578" @default.
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