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 13
CRACK NUCLEATION IN POLYCRYSTALLINE ICE UNDER COMPRESSIVE STRESS STATES P. Kalifa , P. Duval , and M. Ricard Laboratoire de Glaciologie et Geophysique de l'Environnement Grenoble , France The local tensile stress field is given by eq ...
CRACK NUCLEATION IN POLYCRYSTALLINE ICE UNDER COMPRESSIVE STRESS STATES P. Kalifa , P. Duval , and M. Ricard Laboratoire de Glaciologie et Geophysique de l'Environnement Grenoble , France The local tensile stress field is given by eq ...
Page 19
... stress intensity factor due to the component of the applied stresses normal to the crack ( Om ) is minimum . Experi- ments indicate that the standard deviation of the dis- tribution of cracks around the most compressive stress axis ...
... stress intensity factor due to the component of the applied stresses normal to the crack ( Om ) is minimum . Experi- ments indicate that the standard deviation of the dis- tribution of cracks around the most compressive stress axis ...
Page 40
Stress ( MPa ) -1 -2 Stress ( MPa ) Stress ( MPa ) a ) f = 0.01 Hz max = 1.0 MPa -1 -2 -1 0 Strain O f = 0.1 Hz mex - 1.0 MPa b ) -1 -2 -1 Strain f = 1.0 Hz mex - 1.0 MPa c ) 2 × 10-4 2 × 10-4 specimen . Tensile and compressive ...
Stress ( MPa ) -1 -2 Stress ( MPa ) Stress ( MPa ) a ) f = 0.01 Hz max = 1.0 MPa -1 -2 -1 0 Strain O f = 0.1 Hz mex - 1.0 MPa b ) -1 -2 -1 Strain f = 1.0 Hz mex - 1.0 MPa c ) 2 × 10-4 2 × 10-4 specimen . Tensile and compressive ...
Contents
OFFSHORE MECHANICS | 1 |
The Growth of Radial Cracks in Ice Sheets | 7 |
ICE FORCES | 11 |
Copyright | |
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analysis applied approach Arctic assumed average body calculated coefficient components compression compressive stress computed considered constant crack creep damage deformation dependent depth described determined developed diameter direction distribution effect elastic energy Engineering equation estimate experiments expression factor failure field Figure floe force fracture frequency function given grain grain boundary horizontal ice sheet iceberg impact increase initial International length limit load mass material maximum mean measured Mechanics method microcracks motion normal nucleation observed obtained Offshore operation parameters peak performed plane position predicted present pressure probability range ratio Regions relation relative Research resistance ridge samples sea ice shear ship shown shows simulation specimen strain rate strength stress structure surface Table temperature tensile tensor tests thickness toughness uniaxial vertical wave