| A static analysis of the rigging structure for Matador, an 80-ton ocean racing yacht, is performed, and the results are compared to load cell data taken during close haul sailing. The purpose of the analysis is to examine the nature of the loading of the shrouds when heeling, backstay cylinder adjustment and runner tensions are considered. Also, the relative rotation between the shrouds and their joints and possibilities of bending stresses developed by friction are discussed. The sail forces acting on the mast are calculated with simple foil theory to estimate sail lift coefficients and drag angles. The heeling angle is considered so that weight of mast and rigging is accounted for. The adjustment of the backstay cylinder is simulated by displacement of the lower end of the backstay, and the runner tensions are modeled as point loads on the mast. |
