.... The dynamics of float-over installations may exhibit subharmonic motion and chaotic motion, under environmental loads. This paper establishes a time domain model for the float-over installation based on a linear potential flow approach. A combination of hydrodynamic analysis of the wave-induced dynamics...

.... a system characterized by nonlinear excitation and restoring forces) is a mass moored in a fluid medium subject to wave excitations. yim upo unstable cycle orbit dynamical system controller excitation gottlieb nonlinear chaotic motion linear map trajectory artificial intelligence...

... the vessel and a stiff fender. It is well established that these types of systems exhibit subharmonic and chaotic motions depending upon the various governing system parameters. Of particular interest is the chaotic motion for which Poincar6 maps exhibit distinctly fractal character. It is shown...

... this numerical wave tank, chaotic motions of a two dimensional unstable floating body with small negative GM are simulated in time domain taking fully nonlinear fluid-body interaction into account. Simulated time history, phase plot and Poincare section of roll motions are presented and the dependency...

... amplitude chaotic motion inertia numerical prediction non-linear tower motion multiple solution prediction equation wave-induced torque stiffuess stiftbess mooring system tower motion frequency ratio subsea system experimentally Proceedings of the Sixth (1996) -International Offshore...

... ABSTRACT The present paper describes an experimental study of wave-induced chaotic motions of a floating structure with nonlinear moorings. The structure is modeled as a rectangular box, and the moorings are represented by a nonlinear restoring force-displacement relationship corresponding...

...) is plotted as a function of displacement x(t). For a periodic motion the corresponding locus forms a unique clos~d curve whereas for a chaotic motion it does not, but rather tends to fill up a portion of phase space. In order to examine the characteri~tic~ of the phase portrait, a Poincare section may...

... at the displaced structure position. This wave-structure system is nonlinear in nature. Based on numerical results, it is concluded that subharmonic motions of various orders, quasi-periodic motion, chaotic motion, and coexistence are all possible in certain frequency regions. INTRODUCTION At present...

... ABSTRACT: A semi-analytical method is employed to investigate stability of the nonlinear response of an articulated tower. Local and global bifurcations determine the possible existence of complex nonlinear and chaotic motions which cannot be obtained through evaluation of an equivalent...