By Ronald Greeley (auth.), J. P. Dempsey, H. H. Shen (eds.)
ISBN-10: 9048158907
ISBN-13: 9789048158904
ISBN-10: 9401597359
ISBN-13: 9789401597357
This quantity constitutes the lawsuits of the IUTAM Symposium on 'Scaling legislation in Ice Mechanics and Ice Dynamics', held in Fairbanks, Alaska from thirteenth to sixteenth of June 2000. Ice mechanics bargains with basically intact ice: during this self-discipline, descriptions of the movement and deformation of Arctic/ Antarctic and river/lake ice demand the advance of bodily dependent constitutive and fracture versions over a major diversity in scale: 0.01 m - 10 km. Ice dynamics, however, bargains with the circulation of damaged ice: descriptions of an mixture of ice floes demand exact modeling of momentum move in the course of the sea/ice method, back over a big variety in scale: 1 km (floe scale) - 500 km (basin scale). For ice mechanics, the emphasis on lab-scale (0.01 - half m) learn con trasts with purposes on the scale of order 1 km (ice-structure interplay, icebreaking); many vital upscaling questions stay to be explored.
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Extra resources for IUTAM Symposium on Scaling Laws in Ice Mechanics and Ice Dynamics: Proceedings of the IUTAM Symposium held in Fairbanks, Alaska, U.S.A., 13–16 June 2000
Sample text
Again a "jump" in the pressure/area curve occurs. 15 times less than the value of a fully LOCAL ICE PRESSURE AREA CURVES 23 confined area for the same area. The design values for our examples are given in Table 4. Table 4. 3 64 This process continues until the full pressure/area or load per width curves are determined for the entire full width of the structure. The results of this exercise for the SSDC/MAT are presented in Figure 10 and Figure 11. Figure 10 also includes local ice pressures derived for a wide structure located in the Chuckchi Sea in 30 m of water.
The lognormal distributions provided a conservative bound on data from the Eagle Lake and cold room tests. 001 was used to estimate the to-year event, based on ice movement statistics. (l986) used a similar analysis, based on a binomial distribution of the number of contact points. 1m) and the fragment size itself (~ Sm), and the number (n) of possible contact points by the ratio of the structure width (100m) to the fragment size. ;nP for small p). This gives a size effect, since the coefficient of variation decreases with n = widthl(fragment size).
These tests were done under more controlled conditions than those aforementioned. They are as valid as those obtained with smaller ships. Structure data may be lower at small areas due to bridging of the ice, the effect of the stiffness of the structure or simply different loading conditions. • • • Icc Indentation Wide Structures Figure 12. Indentation vs. Wide Structure/Ice Interaction: Same Ice Pressure? 4. Aspect Ratio and Full Thickness Conditions As discussed in the design procedure section above, the aspect ratio, w/h, plays an important role in modifying the ice pressure for the same contact area (Sodhi 2000, Masterson and Spencer 2000).
IUTAM Symposium on Scaling Laws in Ice Mechanics and Ice Dynamics: Proceedings of the IUTAM Symposium held in Fairbanks, Alaska, U.S.A., 13–16 June 2000 by Ronald Greeley (auth.), J. P. Dempsey, H. H. Shen (eds.)
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