This article deals with time-domain hydroelastic analysis of a marine structure. The convolution terms associated with fluid memory effects are replaced by an alternative state-space representation, the parameters of which are obtained by using realization theory. The mathematical model established is validated by comparison to experimental results of a very flexible barge. Two types of time-domain simulations are performed: dynamic response of the initially inert structure to incident regular waves and transient response of the structure after it is released from a displaced condition in still water. The accuracy and the efficiency of the simulations based on the state-space model representations are compared to those that integrate the convolutions.
Time-Domain Hydroelastic Analysis of a Flexible Marine Structure Using State-Space Models
Taghipour, R., Perez, T., and Moan, T. (December 11, 2008). "Time-Domain Hydroelastic Analysis of a Flexible Marine Structure Using State-Space Models." ASME. J. Offshore Mech. Arct. Eng. February 2009; 131(1): 011603. https://doi.org/10.1115/1.2979800
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