contributor author | D. G. Karr | |
contributor author | J. C. Watson | |
contributor author | M. HooFatt | |
date accessioned | 2017-05-08T23:30:45Z | |
date available | 2017-05-08T23:30:45Z | |
date copyright | February, 1989 | |
date issued | 1989 | |
identifier issn | 0892-7219 | |
identifier other | JMOEEX-28056#63_1.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/105832 | |
description abstract | A method is presented for determining the collapse pressures of an ice sheet subjected to a uniformly distributed edge load by applying the upper-bound theorem of limit analysis. The ice sheet is idealized as a semi-infinite layer of elastic-perfectly plastic material. A quadratic anisotropic yield criterion is used to calculate the indentation pressures. The ice sheet consists of columnar ice and is assumed isotropic in the plane of the ice sheet. Upper-bound solutions are found by optimizing a three-dimensional discontinuous velocity field representing an assumed collapse pattern of the ice sheet. Solutions are based on various ratios of indentor width to ice thickness, thereby providing an envelope of indentation pressures over a range of aspect ratios, from conditions of plane strain to plane stress. Solutions are then compared with corresponding two and three-dimensional lower-bound analyses. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Three-Dimensional Analysis of Ice Sheet Indentation: Limit Analysis Solutions | |
type | Journal Paper | |
journal volume | 111 | |
journal issue | 1 | |
journal title | Journal of Offshore Mechanics and Arctic Engineering | |
identifier doi | 10.1115/1.3257141 | |
journal fristpage | 63 | |
journal lastpage | 69 | |
identifier eissn | 1528-896X | |
keywords | Ice | |
keywords | Collapse | |
keywords | Stress | |
keywords | Theorems (Mathematics) | |
keywords | Plane strain | |
keywords | Thickness AND Plastics | |
tree | Journal of Offshore Mechanics and Arctic Engineering:;1989:;volume( 111 ):;issue: 001 | |
contenttype | Fulltext | |