Author(s): Andrii Murdza; Erland M. Schulson; Carl E. Renshaw
Linked Author(s):
Keywords: No keywords
Abstract: Flexural experiments were conducted on freshwater columnar-grained S2 ice loaded normal to the columns to determine the hysteretic behavior under reversed cyclic loading at different temperatures, amplitudes and displacement rates. The ice was loaded in four-point bending. Two series of experiments were conducted. In the first, the applied stress amplitude was held constant during the test. For these tests temperature was varied from -3°C to -25°C; the displacement rate was also varied, from 0.001 to 0.5 mm/s. In the second series of tests samples were subjected for cycling at different stress amplitudes, varied from 0.7 MPa to 2.1 MPa, while keeping the displacement rate and temperature constant, 0.1 mm/s and -10°C respectively. These experiments show that energy dissipated during cycling increases with decrease of displacement rate and increase of temperature and stress amplitude. Internal friction increases with an increase of temperature and decrease of displacement rate and is independent of the stress amplitude.
Year: 2018