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 9
... expression is similar in form to that obtained by Palmer et at ( 1983 ) for this situation . difference is that in their analysis 0.55π is replaced by 2.59 . the The only constant " I K1 = 1.1 Oa √πTC ( a ) ( b ) 0.5 ( 3 ) 0.4- 0.3 0.2 ...
... expression is similar in form to that obtained by Palmer et at ( 1983 ) for this situation . difference is that in their analysis 0.55π is replaced by 2.59 . the The only constant " I K1 = 1.1 Oa √πTC ( a ) ( b ) 0.5 ( 3 ) 0.4- 0.3 0.2 ...
Page 15
... expression of K ' , we make some assumptions . First , following Smith and Barnby ( 1967 ) , we assume that o is not modified by the crack itself . Second , since odepends on r , we use the approximation Cottrell and Rice ( 1980 ) : we ...
... expression of K ' , we make some assumptions . First , following Smith and Barnby ( 1967 ) , we assume that o is not modified by the crack itself . Second , since odepends on r , we use the approximation Cottrell and Rice ( 1980 ) : we ...
Page 58
... Expression ( 13 ) , the unit normal to the crack surface is q = k1 ( 14 ) Using Equations ( 13 ) and ( 14 ) the single - dot products in Equations ( 11 ) and ( 12 ) can be calculated and the following expression is found 2 21 bq = B1 a ...
... Expression ( 13 ) , the unit normal to the crack surface is q = k1 ( 14 ) Using Equations ( 13 ) and ( 14 ) the single - dot products in Equations ( 11 ) and ( 12 ) can be calculated and the following expression is found 2 21 bq = B1 a ...
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