Abstract
The effect of temperature cycles on the granular particles surrounding energy-related structures has received more and more attention. In this paper, thermal consolidation tests with granular materials were simulated by the discrete element method, and different densities and magnitudes of temperature change were considered. The features of densification of the granular materials are effectively reflected in the simulation process. It demonstrates that thermal cycling induces a rising of the stress level and accumulation of volumetric strain within granular materials. The evolution of coordination number and anisotropy was investigated. It demonstrates that temperature cycling induces a significant stress dilation and strain contraction within granular materials, while the corresponding granular anisotropy paraments such as contact number, normal contact force, and tangential contact force has also a small change. Moreover, the relative density and the magnitude of temperature change have a significant effect on the micro-anisotropy of the material.
Published Version
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