Program Development to Study Faired Towlines

摘要

Various computational algorithms have been developed for use in the design and analysis of integrated faired towlines. In the first phase of this development a computer program (HYDROSAP) was constructed. This system determined the two-dimensional response of a flexible streamlined profile section, to its hydrodynamic loading, under simulated towing conditions. The second phase of the development has provided algorithms which, first, determine the section's mechnical characteristics (areas, torsion and shear centers, inertia coefficients, etc.) and second, examines the dynamic behavior of a faired towline under quasi study towing conditions. Since these cables have varied and discontinuous elastic properties, all of the structural programs are constructed using the finite element technique. This provides a convenient means to accomodate the variety of conditions which are present in a problem situation. The presently developed three-dimensional cable program does not have the full capability intended for this analysis tool. A full elastic response of the system has not been modelled in the existing system. The two-dimensional program, however, is a complete and operating system as is the several supporting algorithms used defining the sectional mechanical properties for an integrated, faired cable system. (Author)