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TWO-SIDED ESTIMATIONS OF RESISTANCE TO PENETRATION OF A CONE INTO FROZEN GROUND

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Abstract

This work presents experimental data pertaining to the determination of the ultimate strength of frozen soil under uniaxial compression in the range of strain rates of 400–2700 s-1. Finite expressions are obtained for quadratic approximation coefficients that depend on the impact velocity of a stress normal to the impactor surface and the experimentally determined physical and mechanical parameters of the soil, namely shock adiabat and the dynamic strength in compression. The resulting expressions are verified by comparing them with known experimental data related to the penetration of a steel impactor into frozen sandy soil. It is shown that a difference between the results of two-sided estimates and the experiments does not exceed 15%.

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Authors and Affiliations

  1. Research Institute of Mechanics of the Nizhny Novgorod National Research State University, 603600, Nizhny Novgorod, Russia

    V. L. Kotov, A. M. Bragov, V. V. Balandin, A. Yu. Konstantinov & Vl. Vl. Balandin

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  1. V. L. Kotov
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  2. A. M. Bragov
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  3. V. V. Balandin
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  4. A. Yu. Konstantinov
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  5. Vl. Vl. Balandin
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Correspondence to V. L. Kotov.

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Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fizika, 2021, Vol. 62, No. 1, pp. 125–133.https://doi.org/10.15372/PMTF20210114.

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Kotov, V.L., Bragov, A.M., Balandin, V.V. et al. TWO-SIDED ESTIMATIONS OF RESISTANCE TO PENETRATION OF A CONE INTO FROZEN GROUND. J Appl Mech Tech Phy 62, 110–117 (2021). https://doi.org/10.1134/S0021894421010144

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  • DOI: https://doi.org/10.1134/S0021894421010144

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