Index Catalog // ScholarsArchive@OSU

Chaotic response and stability of offshore equipment

Creator:: Lin, Huan
Abstract:: This investigation deals with the chaotic rocking response and overturning stability of offshore equipment subjected to base excitations due to wave-induced motions of the supporting compliant offshore structural system. The equipment compliant structural system is modelled as a free-standing rigid object subjected to horizontal and vertical base accelerations. Three of...
Resource Type:: Masters Thesis

Nonlinear oscillations, bifurcations and chaos in ocean mooring systems

Creator:: Gottlieb, Oded
Abstract:: Complex nonlinear and chaotic responses have been recently observed in various compliant ocean systems. These systems are characterized by a nonlinear mooring restoring force and a coupled fluid-structure interaction exciting force. A general class of ocean mooring system models is formulated by incorporating a variable mooring configuration and the exact...
Resource Type:: Dissertation

Stochastic analysis of a nonlinear ocean structural system

Creator:: Lin, Huan
Abstract:: Stochastic analysis procedures have been recently applied to analyze nonlinear dynamical systems. In this study, nonlinear responses, stochastic and/or chaotic, are examined and interpreted from a probabilistic perspective. A multi-point-moored ocean structural system under regular and irregular wave excitations is analytically examined via a generalized stochastic Melnikov function and Markov...
Resource Type:: Dissertation

Modelling, validation and simulation of multi-degree-of-freedom nonlinear stochastic barge motions

Creator:: Bartel, Warren A.
Abstract:: Recent developments in estimation of the survivability of a U.S. Navy transport barge in random seas are extended to improve accuracy. The single Degree-of-Freedom (DOF) model of a extreme roll response of a barge used in previous research is replaced by a 3-DOF roll-heave-sway model to include linear and nonlinear...
Resource Type:: Masters Thesis

Deterministic and stochastic behaviors of a piecewise-linear system

Creator:: Mha, Ho-Seong
Abstract:: The (nonlinear) response behavior of a piecewise-linear system is investigated under both deterministic and stochastic excitations in this study. A semi-analytical procedure is developed to predict the system behavior by evaluating the joint probability density functions of the Fokker-Planck equations of the stochastic piecewise-linear system under random excitations via a...
Resource Type:: Dissertation

Coupled dynamics of bouys and mooring tethers

Creator:: Idris, Krisnaldi
Abstract:: Time-domain models were developed to predict the response of a tethered buoy subject to hydrodynamic loadings. A coupled analysis of the interaction of a buoy and its mooring is included and three-dimensional response is assumed. External loadings include hydrodynamic forces, tethers tensions, wind loadings and the weight of both cable...
Resource Type:: Dissertation

Seismic protection of flexible rotating machines using base isolators

Creator:: Su, Wen-Chyi
Abstract:: Base isolation is an alternative seismic design strategy in which the primary structures and their internal components are uncoupled from the potentially damaging horizontal components of an earthquake by base isolators which attenuate the transmission of horizontal acceleration into the system. Rotating machines are among the key internal components of...
Resource Type:: Dissertation

Stochastic analysis of complex nonlinear system response under narrowband excitations

Creator:: Shih, I-Ming
Abstract:: Response behavior of a nonlinear structural system subject to environmental loadings is investigated in this study. The system contains a nonlinear restoring force due to large geometric displacement. The external excitation is modeled as a narrowband stochastic process possessing dynamic characteristics of typical environmental loadings. A semi-analytical method is developed...
Resource Type:: Dissertation

Experimental analysis of a nonlinear moored structure

Creator:: Narayanan, Suchithra
Resource Type:: Dissertation

Stochastic analysis of the nonlinear response transition behavior of an ocean system

Creator:: Yuk, Dongjun
Abstract:: The nonlinear response of an ocean system subjected to random excitations can exhibit very complex dynamic behaviors including jump phenomena and coexistence of attractors. In this study, the stochastic system response behavior of a simple (Duffing) oscillator under narrow-band random excitations is first examined in the subharmonic resonance region. A...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Chaotic response and stability of offshore equipment

Nonlinear oscillations, bifurcations and chaos in ocean mooring systems

Stochastic analysis of a nonlinear ocean structural system

Modelling, validation and simulation of multi-degree-of-freedom nonlinear stochastic barge motions

Deterministic and stochastic behaviors of a piecewise-linear system

Coupled dynamics of bouys and mooring tethers

Seismic protection of flexible rotating machines using base isolators

Stochastic analysis of complex nonlinear system response under narrowband excitations

Experimental analysis of a nonlinear moored structure

Stochastic analysis of the nonlinear response transition behavior of an ocean system

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