Research on the application of three dimensional FEM and SPH combined algorithm in API penetrating target plate

DOI:	10.11809/bqzbgcxb2024.10.029
Keywords:	12.7 mm API; penetration; numerical simulation; SPH
Abstract:	The simulation algorithm combining 3D FEM and SPH particles plays an important role in the study of bullet penetrating target plate, which can avoid the problem of large deformation of FEM mesh in strong impact calculation. In order to master the advantages and disadvantages of the 3D FEM/SPH algorithm, the numerical simulation of penetrating the Q235 target plate with a 12.7 mm API core is carried out. The 2D FEM algorithm and the 3D FEM algorithm are compared with it. The following conclusions are obtained by analyzing the penetration depth, the influence range of pressure and plastic strain and calculation efficiency. The results show that there is little difference between the three algorithms in calculating penetration depth. Compared with other algorithms, the three dimensional FEM algorithm is more accurate in calculating pressure, while SPH particle method is not good at calculating target pressure. The erosion range of bullet penetrating target plate does not exceed 5 times API core radius. Two dimensional FEM algorithm has the highest computational efficiency and is suitable for adjusting model and material parameters, while the 3D FEM/SPH algorithm is more suitable for outputting computational effect diagrams.
Issue:	Vol. 45 No. 10 (2024)
Published:	2024-10-31
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