Wave Induced Loads
 
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Wave Induced Loads

      7/19/1999

Advanced Method to Predict Wave Induced Loads for High Speed Ships "WAVELOADS" is an associated project of the thematic network SAFER EURORO that coordinates research activities concerned with the design of safe European ferries. The speed of ships is of considerable importance for the future of waterborne transport. To ensure their competitive position in world markets, European shipyards need to be able to produce modern high speed ships conforming to the highest safety standards. Furthermore, the operation of high speed ships to meet increasing traffic density of European short sea shipping routes can be sustained only if structural strength and safety levels of these ships are adequate. Hull structural damage sustained by modern high speed ships in severe seas indicates a need to improve methods of safe structural design. There is a lack of a practical, yet accurate, method to predict wave induced load effects for modern high speed ships. Classification society rules provide formulas for safe design loads, but these tend to reflect the service experience of existing ships and will not adequately account for future larger scale ship designs. In addition, high speed hull structures need to be optimized for minimum weight. As a result, new design methods that incorporate numerical techniques are needed to ensure hull designs optimized for both weight and safety and to establish guidelines for rule improvement by classification societies. WAVELOADS addresses this need by developing such a method. The research includes strength analyses of representative hull structural configurations of high speed ships and the development of a sufficiently accurate numerical technique to predict wave induced design loads. This technique will be validated by systematic model tests in a towing basin and by comparative computations with an advanced nonlinear two-dimensional (strip theory) method. The research has a time span of three years and will conclude with the establishment of guidelines and recommendations for hull structural improvements and rule developments for high speed ships. More information: Germanischer Lloyd AG


 







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