NUMERICAL SIMULATION OF SLIPPAGE DETONATION BY MATERIAL POINT METHOD——MPM
滑移爆轰问题无网格MPM法数值模拟

MPM is one of meshless method,with many advantages in numerical simulations of explosion shock and large deformation problems as compared with other methods in the literature.The essential idea of MPM is to take advantages of both the Eurlerian and Lagrangian methods,and to represent any continuum body by a finite collection of material points with lumped mass.Because MPM does not invoke master/slave nodes and remeshing,some difficulties in the finite element method can be avoided.MPM algorithm is briefly introduced in this paper.As an instance of slippage detonation,the explosive welding,including explosion and large deformation between the flyer plate and base plate under blast load,can be simulated with MPM.A problem involving elastic-plastic deformation and detonation is calculated using MPM and results are compared with analytical ones,which shows the reliability of MPM.The validity and high efficiency of MPM are proved in problems of explosion and shock.