Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 4; Volume 8, Part 4American Society of Mechanical Engineers, 1989 - Arctic regions |
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Page 171
... thicknesses exist at a ridge : ice block thickness hь , level ice thickness hi , and the thickness of the frozen nucleus hf . They are obtained from eqs . ( 1 ) - ( 2 ) as hb = as , 1/2 ası1 / 2 , hi = a ( S1 + S2 ) 1 / 2 , hf = a ( S2 ...
... thicknesses exist at a ridge : ice block thickness hь , level ice thickness hi , and the thickness of the frozen nucleus hf . They are obtained from eqs . ( 1 ) - ( 2 ) as hb = as , 1/2 ası1 / 2 , hi = a ( S1 + S2 ) 1 / 2 , hf = a ( S2 ...
Page 467
... Thickness 30 mm Strength = 25 kPa 0 0.00 0.05 0.10 0.15 I Surge Force SF plus 2 SD 0.20 0.25 Ice Impact Velocity ( m / s ) Moored Platform Heave vs. Ice Velocity Thickness 30 mm Strength = 25 kPa 0+ 0.00 0.05 0.10 0.15 0.20 0.25 0.8 Ice ...
... Thickness 30 mm Strength = 25 kPa 0 0.00 0.05 0.10 0.15 I Surge Force SF plus 2 SD 0.20 0.25 Ice Impact Velocity ( m / s ) Moored Platform Heave vs. Ice Velocity Thickness 30 mm Strength = 25 kPa 0+ 0.00 0.05 0.10 0.15 0.20 0.25 0.8 Ice ...
Page 468
... Thickness 6 Velocity = 0.10 m / s 5 Strength = 25 kPa 0 10 20 30 Ice Thickness ( mm ) 40 50 Moored Platform Pitch Angle vs Ice Thickness 2 Velocity = 0.10 m / s Strength = 25 kPa A -00 D Surge Force SF plus 2 SD G Heave ( mm ) H plus 2 ...
... Thickness 6 Velocity = 0.10 m / s 5 Strength = 25 kPa 0 10 20 30 Ice Thickness ( mm ) 40 50 Moored Platform Pitch Angle vs Ice Thickness 2 Velocity = 0.10 m / s Strength = 25 kPa A -00 D Surge Force SF plus 2 SD G Heave ( mm ) H plus 2 ...
Contents
OFFSHORE MECHANICS | 1 |
The Growth of Radial Cracks in Ice Sheets | 7 |
ICE FORCES | 11 |
Copyright | |
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analysis angle Arctic Engineering assumed Barents Sea Beaufort Sea behaviour berm Bjørnøya calculated coefficient Cole components computed Conference on Offshore constant constitutive equation damage evolution damage model deformation density depth determined diameter distribution dynamic effect energy equation experimental factor failure force fracture mechanics fracture toughness frequency friction function Geogrid grain horizontal ice floe ice load ice sheet ice thickness iceberg icebreaking impact increase indentor initial interaction keel material maximum measured Mechanics and Arctic Mellor microcracks modulus motion notch nucleation observed obtained ocean Offshore Mechanics parameters peak stress plane polycrystalline ice predicted pressure probability Proc radar ratio resistance ridge samples sea ice seabed shear shear stress ship shown in Figure simulation specimen spray ice strain rate strain tensor strength structure surface temperature tensile tensile stress tensor tests uniaxial compression variable vector velocity vertical wave Young's modulus