Multibody dynamic modeling and prototype validation of soft yoke mooring system

Abstract

To study the multibody dynamic behavior of the soft yoke mooring system (SYMS) of the floating production storage and the offloading device, the three-dimensional (3D) multibody dynamics modeling is established by splitting the hinge joints and the field prototype monitoring information. The accuracy of the proposed multibody dynamic simulation method for describing the motions of hinges and single bodies is validated through the redundancy information of field monitoring. Compared with the existing two-dimensional model of SYMS, the 3D model proposed in this paper comprehensively considered the influence of the motions of the hull and mooring structure; the mooring restoring force has an obvious wave frequency effect. Furthermore, the modeling can comprehensively describe the real-time service status, such as motions and postures of mooring components and mooring forces of SYMS.