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Experimental and DEM simulations of the mechanical properties of rock under freeze–thaw cycles by Jun Yu; Qiang Zhang; Chaojun Jia; Mingfeng Lei; Chenyang Zhao; Ruifeng Pang; Zong Li; Tao Zeng is a Earth and Planetary Sciences article available to read on EtoBox.

What is Experimental and DEM simulations of the mechanical properties of rock under freeze–thaw cycles about?

The investigation of the physical-mechanical properties of rock after freeze–thaw (F-T) cycles has important theoretical significance for understanding freeze–thaw disaster mechanisms, disaster prediction, and tunnel protection system design in cold regions. Physical-mechanical tests are carried out to quantify the deterioration of the physical-mechanical properties of sandstone subjected to long-term F-T cycles. The damage mechanism of sandstone subject to F-T cycles is discussed based on scanning electron microscopy (SEM) results. A new three-dimensional discrete element method (DEM) model for simulating freeze–thaw damage of water-saturated rocks is established based on the volume expansion theory. In the new method, a one-dimensional thermal conduction equation is introduced to realistically simulate the distribution of the temperature field in a cylindrical sample during thermal conduction, and the evolution equation of ice volume expansion is introduced to control the volume expansion of ice particles in the sample as the freeze point. The crack development mechanism during the F-T cycle and the correlation between the cracks generated by the F-T cycle and subsequent loading

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Author

Jun Yu; Qiang Zhang; Chaojun Jia; Mingfeng Lei; Chenyang Zhao; Ruifeng Pang; Zong Li; Tao Zeng

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Earth and Planetary Sciences (Physical Sciences)