000004957 001__ 4957
000004957 005__ 20141119144608.0
000004957 04107 $$aeng
000004957 046__ $$k2002-06-02
000004957 100__ $$aBažant, Zdeněk P.
000004957 24500 $$aSCALING OF FAILURE OF FLOATING SEA ICE PLATES

000004957 24630 $$n15.$$pProceedings of the 15th ASCE Engineering Mechanics Division Conference
000004957 260__ $$bColumbia University in the City of New York
000004957 506__ $$arestricted
000004957 520__ $$2eng$$aBecause early laboratory tests showed sea ice to be notch-insensitive, the failure of floating sea ice in the Arctic has until recently been analyzed according to either elasticity with a strength limit or plasticity, which both exhibit no size effect. Fracture mechanics was considered to be inapplicable to sea ice, and if a size effect was suspected, it was regarded as strictly statistical. This state of affairs was radically changed by the epoch-making size effect tests of Dempsey’s team in the Arctic, in which fracture specimens up to 80 m in size were broken. The tests confirmed a strong deterministic size effect and applicability of fracture mechanics on the large scale. Building on this fact, now almost generally accepted, fracture mechanics solutions for several important problems have been obtained. One such problem is fracture caused by a vertical concentrated load. Although this is an important problem, it is impossible to get exact analytical solutions, which causes lack of generality and transparency. The present paper briefly reviews a recent study of a similar problem where the floating ice plate is subjected to a vertical line load, which is a one-dimensional problem. An exact analytical solution can be obtained, with only mild simplifications. Although this problem is of lesser practical relevance, its analytical solution provides a much better insight and understanding of the size effect of the floating sea ice plates. 

000004957 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000004957 653__ $$aSize effect, Fracture mechanics, Strength, Floating ice, Vertical line load

000004957 7112_ $$a15th ASCE Engineering Mechanics Division Conference$$cNew York (US)$$d2002-06-02 / 2002-06-05$$gEM2002
000004957 720__ $$aBažant, Zdeněk P.$$iGuo, Zaoyang
000004957 8560_ $$ffischerc@itam.cas.cz
000004957 8564_ $$s204205$$uhttp://invenio.itam.cas.cz/record/4957/files/615.pdf$$yOriginal version of the author's contribution as presented on CD, .
000004957 962__ $$r4594
000004957 980__ $$aPAPER