Organized and Chaired by J.P. Dempsey, H.H. Shen and L.H. Shapiro SCALING LAWS FOR BRITTLE FAILURE

• Main Authors: Ice Dynamics, Of Sea Ice, Zdenek P. Bazant
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Sea ice
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.694.3757; http://www.civil.northwestern.edu/people/bazant/PDFs/Papers/P155.pdf

Abstract. Based on the premise that large-scale failure of sea ice is governed by fracture mechanics, recently validated by Dempsey's in-situ tests, the paper1 presents simplified analytical solutions for (1) the load capacity of floating ice plate subjected to vertical load and (2) the horizontal force exerted by an ice plated mov-ing against a fixed structure. The solutions reveal size effects of ice thickness, structure diamete.r and, in the case of a finite floe, the floe size. For vertical load-ing, the results agree with previous sophisticated numerical fracture simulations. The results contrast with the predictions of material strength or plasticity theo-ries, which exhibit no size effect on the nominal strength of structure. The results on size effect are supported "oy recent numerical simulations and comparisons with field observations. 1