Coupled SPH-FEM Method for Analyzing Hemispherical Shell Impact on Soil

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Journal of Vibration and Shock ›› 2017, Vol. 36 ›› Issue (17) : 195-199.

LUO Jie1 XIAO Jian-chun1 MA Ke-jian1 MAO Jia-yi2

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Abstract

SPH method, a Lagrangian, meshless hydrodynamics method, had been widely applied in the impact dynamics research. In order to validate the applicability of the SPH-FEM method in the problem of impact on soil, the SPH-FEM coupling analysis and eight tests were adopted. The acceleration-time history curve and local deformation from SPH-FEM models and tests were compared. The energy dissipation mechanism of the soil was summarized by the energy and impact force-time history curves were obtained by the SPH-FEM method. The study showed the SPH-FEM method can greatly simulate the whole process of the hemispherical shell impact soil in which the numerical simulation results are in good agreement with the experimental results. The soil is a good cushion material.

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/ SPH-FEM, impact, soil, hemisphere shell, acceleration

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LUO Jie1 XIAO Jian-chun1 MA Ke-jian1 MAO Jia-yi2. Coupled SPH-FEM Method for Analyzing Hemispherical Shell Impact on Soil[J]. Journal of Vibration and Shock, 2017, 36(17): 195-199

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