determination of global ice loads on the ship using the measured full-scale motion data
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ID: 238417
2016
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Abstract
This paper describes the whole procedures to determine ice-induced global loads on the ship using measured full-scale data in accordance with the method proposed by the Canadian Hydraulics Centre of the National Research Council of Canada. Ship motions of 6 degrees of freedom (dof) are found by processing the commercial sensor signals named Motion Pak II under the assumption of rigid body motion. Linear accelerations as well as angular rates were measured by Motion Pak II data. To eliminate the noise of the measured data and the staircase signals due to the resolution of the sensor, a band pass filter that passes frequencies between 0.001 and 0.6 Hz and cubic spline interpolation resampling had been applied. 6 dof motions were computed by the integrating and/or differentiating the filtered signals. Added mass and damping force of the ship had been computed by the 3-dimensional panel method under the assumption of zero frequency. Once the coefficients of hydrodynamic and hydrostatic data as well as all the 6 dof motion data had been obtained, global ice loads can be computed by solving the fully coupled 6 dof equations of motion.
Full-scale data were acquired while the ARAON rammed old ice floes in the high Arctic. Estimated ice impact forces for two representative events showed 7–15 MN when ship operated in heavy ice conditions.
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lee2016internationaldetermination
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| Authors | ;Jae-Man Lee;Chun-Ju Lee;Young-Shik Kim;Gul-Gi Choi;Jae-Moon Lew |
| Journal | current developments in nutrition |
| Year | 2016 |
| DOI |
10.1016/j.ijnaoe.2016.03.006
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