Application of the Generalized Interpolation Material Point Method Coupled With the Finite Element Method for Rigid-Flexible Contact

The paper shows the numerical simulation of the Generalized Interpolation Material Point Method (GIMP) coupled with the Finite Element Method (FEM) in rigid-flexible contact. The GIMP can overcome certain numerical noise existing in the original MPM and is used to simulate the great deformation of soft materials. A rigid material with a higher hardness can be described by the finite element method for limited deformation in rigid-flexible contact. First, the feasibility of GIMP was verified by the high-speed gelatin impact rigid wall. After that, this article shows the collision simulation of an iron bar and a gelatin bar. By comparing the material deformation, internal pressure distribution and the form of shock-wave obtained by GIMP with the calculation results of ls-dyna, it is shown that couple the GIMP and finite element method to deal with rigid-flexible contact is feasible.