Abstract
In this paper, a displacement–pressure (u–p) semi-Lagrangian reproducing kernel (RK) is introduced to study the penetration depth of various projectile types into dry and fully saturated geo-materials. To describe the poromechanics of saturated materials, Biot theory is incorporated into the semi-Lagrangian formulation and a damage model is embedded into Drucker–Prager constitutive model to simulate the soil behavior and separation during the impact and penetration process. The stabilized nodal domain integration is developed in the two-field semi-Lagrangian RK formulation to ensure numerical stability, and the kernel contact algorithm is implemented to model the interaction between soil and projectile bodies. Several examples are studied to validate and assess the proposed method’s performance in predicting the final penetration depth, and the results are compared to those reported in the literature.
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The support from the U.S. Strategic Environmental Research and Development Program (SERDP) under contract number W912HQ18C0099 is gratefully acknowledged.
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Mahdavi, A., Chi, SW. & Atif, M.M. A two-field semi-Lagrangian reproducing kernel model for impact and penetration simulation into geo-materials. Comp. Part. Mech. 7, 351–364 (2020). https://doi.org/10.1007/s40571-019-00253-0
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DOI: https://doi.org/10.1007/s40571-019-00253-0