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Please use this identifier to cite or link to this item: http://eprint.iitd.ac.in/handle/2074/124

Title: Second-Order Drift Force Responce of Offshore Guyed Towers
Authors: Bisht, R S
Jain, A K
Keywords: domain method of analysis
Guyed Offshore Towers
to low-frequency,
random sea environment
non-linear spring
Issue Date: 1995
Citation: Ocean Engng ( 22 ) 3, 251-270
Abstract: An iterative frequency domain method of analysis is presented for determining the response behaviour of Guyed Offshore Towers to low-frequency, second-order wave drift forces generated in a random sea environment. For the response analysis, the tower is idealized as a shear beam with a rotational spring at the bottom support. The guylines are replaced by a non-linear spring. The second-order drift force is considered to be proportional to the square of the wave elevation and is simulated using a drift force coefficient and the time history of a slowly varying wave envelope in random sea. The responses due to drift forces are obtained in frequency domain by incorporating the non-linearities produced due to non-linear guy lines. An example problem is solved under different random sea states to compare the response behaviour of the tower obtained by the second-order wave force, the first-order wave force and a combination of the two.
URI: http://eprint.iitd.ac.in/dspace/handle/2074/124
Appears in Collections:Civil Engineering

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