Author(s): Mark Fuglem; Ian Lordaan
Linked Author(s):
Keywords: No Keywords
Abstract: In developing Canada's Equivalent Standards for the Construction of Arctic Class Vessels, the design ice loads for determining hull girder, plating, and stiffener strengths were related to the maximum bow force, denoted as FMAX' In 1995, a study was carried out to define FMAX better and verify the safety and efficiency of the resulting design procedures. This paper summaries the overall approach and gives details of two study components. The first is the development of a deterministic ramming model which can explain observed load time traces and can estimate loads for larger vessels. The second is application of the model within a probabilistic framework to calibrate a parametric curve giving FMAX in terms of vessel ice class, displacement, and power. A better understanding was gained of the main factors determining the shapes of the load time traces for different size vessels and of the scatter in observed loads.
Year: 1998