UPON THE INFLUENCE OF SOME PARAMETERS,IN NUMERICAL ANALYSIS BY SPH

In some cases SPH method is more suitable than Finite Element Method (FEM) and this is more and more used also in applied mechanics. In structure numerical analysis some parameters essentially influence the results, among these the constants of the material models and some specific parameters of the method have a maximum importance. It is about the most used material models like plastic-kinematic material model, isotropic-elastic-failure material model, Johnson-Cook material model and others, which take into account the strain rate. This paper comes with some results of our experience in using of the material models together with SPH (Smoothed Particle Hydrodynamics) method. The influence of the smoothing length, distance between particles, the number of these are also numerical investigated. Our established conclusions, supported by graphics and quantitative appreciations could be useful for the researchers working in numerical analysis field.