Papers Published

1. Wilson, James F., DIRECT ESTIMATES OF MOORED SHIP STOCHASTIC RESPONSES., AGARD Lecture Series (1977), pp. 192 - 195 .
   (last updated on 2007/04/09)

   Abstract:
   A ship moored parallel to a quay or left double quote spread right double quote moored in the open sea by symmetrically placed mooring chains, may undergo troublesome motion in even relatively mild waters, and under certain critical conditions may break adrift from its moorings. To understand this phenomenon, analytical studies based on deterministic solutions of both linear and nonlinear dynamic ship models, mainly harmonically excited, single-degree-of freedom systems, were begun in the 1950's. This paper discusses an approach that involves direct estimates of a ship's response statistics using continuous, experimentally based wave force spectra as input excitation. Results can be used to efficiently estimate mooring line loads for coupled motion involving several degrees-of-freedom, where wave spectra are directional.

   Keywords:
   STRUCTURAL ANALYSIS - Dynamic Response;WATER WAVES;STATISTICAL METHODS;