Application of Phase Plots for Dynamic Stability Analysis of Compliant Offshore Structures
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چکیده
Compliant offshore structures, by yielding to wave and current actions, avoid unacceptably high hydrodynamic loads leading to economic designs and thus have always been favored for deep sea water operations. As these structures have large displacements with inherent non-linearities, so prediction of behavior of these structures in oceanic environment along with earthquake loads is difficult and is always met with many challenges. Oceanic waves are better modeled as stochastic process, so there is a need to investigate the stochastic stability of flexible offshore structures as well. The presence of strong geometric non-linearity and non-linearity arising due to fluid structure interaction leads to the possibility of dynamic instability of the systems. Efforts have been made to use simplified realistic mathematical models to determine dynamic stability and chaotic behavior of compliant offshore structures. A comprehensive review of literature available on the subject matter was made and relevant portions have been presented in the paper along with a case study of Dynamic Stability analysis of Single Hinged Articulated Tower [SHAT] using two dimensional Phase Plots.
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تاریخ انتشار 2013