SPH algorithm fragment identification method based on LS-DYNA

The invention discloses an SPH algorithm fragment identification method based on LS-DYNA, and the method comprises the steps: firstly, outputting the main data information of particles based on an LS-DYNA calculation result, building an all-SPH particle data information matrix, carrying out the mirroring of the all-SPH particle data information matrix according to an actual condition, and carrying out the recognition of the fragment of the SPH algorithm. Then, a non-independent matrix representing interaction between particles is constructed through an all-SPH particle data information matrix, all fragments are screened through the non-independent matrix, and finally, physical quantities such as the mass, the volume, the velocity component and the center-of-mass coordinate of each fragment are sorted out and output as a text file. According to the SPH algorithm fragment identification and information statistics method based on the LS-DYNA, fragments of any size, material and type of an SPH algorithm calculati