Author(s): Ian J. Jordaan

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Keywords: No Keywords

Abstract: A better understanding of the mechanics of ice has led to increased demands for improved computational methods. To put this into perspective, current trends in ice mechanics are reviewed. These relate principally to creep, global (tensile) fracture as well as compression fracture (crushing). The need for numerical methods (finite element, discrete element, finite difference) is discussed in light of the review of the mechanics of ice, as well as the boundary conditions for the ice feature. Analyses carried out in past studies and current work at various institutions are reviewed. These include applications of elasticity, plasticity, creep (reference stress), fracture and damage mechanics. Future research needs are reviewed. These include studies of fracture, as related to splitting of ice features, spalling and flexural failure, as well as crushing. The latter can be studied by means of damage mechanics as well as viscoplastic analyses, which are reviewed and discussed. Viscoplastic analysis of crushed ice cannot be carried out using failure surfaces for the virgin ice: new techniques are required, requiring flow formulations and Eulerian coordinates. There is a need for integration of the various aspects with mechanical models based on the actual processes involved in large and small-scale experiments.

DOI:

Year: 1986