Abstract
A hybrid method, consisting of spectral and probabilistic analysis techniques, is proposed to evaluate the dynamic response characteristics of offshore platforms considering nonlinear wave kinematics and free surface fluctuation effects. The effect of nonlinear wave kinematics and intermittent loading is that the wave loading is non Gaussian. The response of platforms to such non Gaussian loading will be non Gaussian. A combination of spectral and probabilistic analyses is developed to estimate the response up to the fourth moment. The probability distribution of the response is estimated as a mixture of Gaussian distribution and shifted exponential distribution. With the help of an example, it is shown that the free surface fluctuations have a significant effect on the response. The skewness and kurtosis are shown to increase with an increase in significant wave height. The probability distribution is shown to deviate from the normally assumed Gaussian distribution, particularly at the tails commonly found in full scale measurements.
| Original language | English (US) |
|---|---|
| Journal | Journal of Structural Engineering (United States) |
| Volume | 113 |
| Issue number | 9 , Sep. 1987, p.1882-1898. |
| State | Published - 1987 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Civil and Structural Engineering
- Building and Construction
Cite this
Non-Gaussian response of offshore platforms : dynamic. / Kanegaonkar, H. B.; Haldar, Achintya.
In: Journal of Structural Engineering (United States), Vol. 113, No. 9 , Sep. 1987, p.1882-1898., 1987.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Non-Gaussian response of offshore platforms
T2 - dynamic.
AU - Kanegaonkar, H. B.
AU - Haldar, Achintya
PY - 1987
Y1 - 1987
N2 - A hybrid method, consisting of spectral and probabilistic analysis techniques, is proposed to evaluate the dynamic response characteristics of offshore platforms considering nonlinear wave kinematics and free surface fluctuation effects. The effect of nonlinear wave kinematics and intermittent loading is that the wave loading is non Gaussian. The response of platforms to such non Gaussian loading will be non Gaussian. A combination of spectral and probabilistic analyses is developed to estimate the response up to the fourth moment. The probability distribution of the response is estimated as a mixture of Gaussian distribution and shifted exponential distribution. With the help of an example, it is shown that the free surface fluctuations have a significant effect on the response. The skewness and kurtosis are shown to increase with an increase in significant wave height. The probability distribution is shown to deviate from the normally assumed Gaussian distribution, particularly at the tails commonly found in full scale measurements.
AB - A hybrid method, consisting of spectral and probabilistic analysis techniques, is proposed to evaluate the dynamic response characteristics of offshore platforms considering nonlinear wave kinematics and free surface fluctuation effects. The effect of nonlinear wave kinematics and intermittent loading is that the wave loading is non Gaussian. The response of platforms to such non Gaussian loading will be non Gaussian. A combination of spectral and probabilistic analyses is developed to estimate the response up to the fourth moment. The probability distribution of the response is estimated as a mixture of Gaussian distribution and shifted exponential distribution. With the help of an example, it is shown that the free surface fluctuations have a significant effect on the response. The skewness and kurtosis are shown to increase with an increase in significant wave height. The probability distribution is shown to deviate from the normally assumed Gaussian distribution, particularly at the tails commonly found in full scale measurements.
UR - http://www.scopus.com/inward/record.url?scp=0023115318&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0023115318&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0023115318
VL - 113
JO - Journal of Structural Engineering
JF - Journal of Structural Engineering
SN - 0733-9445
IS - 9 , Sep. 1987, p.1882-1898.
ER -