Recent Developments of Smoothed Particle Galerkin (SPG) Method for Joint Modeling

This paper presents the most up-to-date status of SPG (Smoothed Particle Galerkin) development with a focus on the establishment of a failure criterion library, a default keyword parameter setting, and its application in joint modeling. In the recent years, SPG bond failure criterion has been extended from effective plastic strain to 1st/3rd principal strain, maximum shear strain, 1st principal stress and several other quantities defined through *MAT_ADD_EROSION (e.g. effective stress/strain and GISSMO damage). Meanwhile, to minimize users’ work in setting up an SPG simulation, default parameters have been provided so that user can set up the SPG material failure analysis easily with as few as one prescribed parameter for the failure criterion. To demonstrate the effectiveness of SPG method with the new features, the failure modeling of FDS (flow drill screwing) and spot welding is studied.