Abstract
By taking the frozen soil as a particle-reinforced composite material which consists of clay soil (i.e., the matrix) and ice particles, a micromechanical constitutive model is established to describe the dynamic compressive deformation of frozen soil. The proposed model is constructed by referring to the debonding damage theory of composite materials, and addresses the effects of strain rate and temperature on the dynamic compressive deformation of frozen soil. The proposed model is verified through comparison of the predictions with the corresponding dynamic experimental data of frozen soil obtained from the split Hopkinson pressure bar (SHPB) tests at different high strain rates and temperatures. It is shown that the predictions agree well with the experimental results.
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Project supported by the National Natural Science Foundation of China (No. 11172251), the Open Fund of State Key Laboratory of Frozen Soil Engineering (No. SKLFSE201001), the Opening Project of State Key Laboratory of Explosion Science and Technology (Beijing Institute of Technology, No. KFJJ13-10M), and the Project of Sichuan Provincial Youth Science and Technology Innovation Team, China (No. 2013TD0004).
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Xie, Q., Zhu, Z. & Kang, G. A Dynamic Micromechanical Constitutive Model for Frozen Soil under Impact Loading. Acta Mech. Solida Sin. 29, 13–21 (2016). https://doi.org/10.1016/S0894-9166(16)60003-4
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DOI: https://doi.org/10.1016/S0894-9166(16)60003-4