Author(s): Junji Sawamura; Takashi Tachibana; Hiroyuki Tsuchiya; Naoki Osawa
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Keywords: No Keywords
Abstract: This paper investigates the criteria for ice bending failure of the wedge-shaped floating ice by the numerical simulation for the bending behavior of wedge-shaped ice to estimate the ice load and the breaking channel when ship is maneuvering in the plate ice. An explicit Finite Element (FE) approach is applied to simulate the bending behavior of the floating ice in the various ice conditions e. g. ice thickness, ice wedged angle, the speed and ship hull angle contacted with the ice edges. The bending behavior of the 3-dimensional floating ice subjected to the rapid force is calculated. And, the bending failure is investigated by the stress distribution resulted from the FE simulations. The criteria of the bending failure, which is the breaking force, time and the length of the broken cusp are proposed. The proposed criteria are applied to the authors developed program to calculate the repetitive ice force and the ice breaking channel of the ship maneuvering in the level ice. The ice load and the breaking channel in the different bending failure criteria are compared. The ice load and resistance are significantly affected by the criteria of the bending failure.
Year: 2010