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 67
... DAMAGE MECHANICS MODEL FOR UNIAXIAL CREEP AND CYCLIC LOADING. ABSTRACT When ice is crushed during rapid loading , a dense array of microcracks is formed . The progressive degradation of the ice properties due to these cracks can be ...
... DAMAGE MECHANICS MODEL FOR UNIAXIAL CREEP AND CYCLIC LOADING. ABSTRACT When ice is crushed during rapid loading , a dense array of microcracks is formed . The progressive degradation of the ice properties due to these cracks can be ...
Page 75
... damage mechanics . The model employs damage evolution laws for two microcrack systems which are associated with grain boundary and transgranular cracking . The damage model is combined with power law creep and delayed elastic models and ...
... damage mechanics . The model employs damage evolution laws for two microcrack systems which are associated with grain boundary and transgranular cracking . The damage model is combined with power law creep and delayed elastic models and ...
Page 78
... damage growth rate factor which is function of normal strain - rate , where §1 1 assumed to be a B1 = 10gle 1 + n , 105 1 - B1 = -582 + n2 1 1 nn e : nn ⚫d | ≥ ⚫d | < 10-5 nn nn and 71 are constants . In a similar manner the damage ...
... damage growth rate factor which is function of normal strain - rate , where §1 1 assumed to be a B1 = 10gle 1 + n , 105 1 - B1 = -582 + n2 1 1 nn e : nn ⚫d | ≥ ⚫d | < 10-5 nn nn and 71 are constants . In a similar manner the damage ...
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