Physical and Mechanical Behavior of Ice Under Dynamic Loading

The physical and mechanical behavior of ice is studied by the example of the Ih ice phase using the method of numerical simulation in a computational model of damaged medium in order to describe the common factors of deformation and fracture of ice under dynamic loading. The development of inelastic strains and the evolution of damage accumulation under high-rate loading are described by the Johnson-Holmquist (JH2) damage model. The computations are performed in a 3D formulation using an explicit second-order accuracy difference scheme. The computational model is calibrated with respect to the experimental data obtained in a wide range of strain rates using the Kolsky method and in the experiments on ice loading with plane shock waves. It is shown that the proposed physical-mechanical concepts and the model of ice behavior under dynamic loading proposed in this study provide both qualitative and quantitative agreement of the results of mechanical behavior of Ih ice with the available experimental data in a range of pressures from 0 to 150 MPa, at the temperatures from 193 to 273 K, and a range of strain rates from 0 to 2000 1/s. This evidences of the validity of the concepts used and allows predicting the ice behavior under dynamic loads.

Automated summary

This study investigates the physical and mechanical behavior of ice using numerical simulation and a damaged medium computational model, focusing on deformation and fracture under dynamic loading. By utilizing the Johnson-Holmquist (JH2) damage model and calibrating with experimental data, the model shows both qualitative and quantitative agreement with the behavior of Ih ice under dynamic loads, allowing for predictions of ice behavior under different conditions.