GLOBAL AND SLAM LOAD MODEL TESTING TO SUPPORT DEVELOPING HSMV OPERATIONS IN SEVERE SEA CONDITIONS

摘要

To satisfy the development requirements of commercial and military HSMVs in severe sea state conditions, modelrntesting to validate global and slam loadings is required. Given the complexity of HSMV unsteady hydrodynamics, modelrntesting is an essential basis for design. An elastic segmented model of a wave-piercing catamaran has been constructedrnto obtain experimental values of global and slamming loads. Strain gauges are fitted to enable the measurement of thernunsteady vertical bending moments. A wave-piercing catamaran must sustain slamming loads on the wet deck, centrernbow and bow archway and so a separate centre bow segment enables the slamming loads to be directly measured. Thernmodel is found to give good simulation of the slam load impulse and the energy input to the whipping mode. Applicationrnof the results of this work in INCAT 98m and 112m designs has produced vessels which have withstood very severe searnconditions without damage.