Review on State of Art of Smoothed Particle Hydrodynamics Method and its Advances in Solid Dynamics

Abstract

The world is witnessing continued collapse of both buildings and other structures during earthquakes, which is an example of a dynamic effect. One cause of such disasters may be inadequacies of techniques for modeling of these structures during analysis and design as compared to their actual responses during dynamic events. Also, techniques for numerical modeling and analysis of structures in place are meshed methods which do not accurately capture the actual behavior of structural elements especially under high dynamic actions due to the assumption that mesh geometry is unchanged geometry tend to change with respect to time step of such an action. In view of this, meshless techniques such as Smoothed Particles Hydrodynamics (SPH) prove to be promising. However, the application of SPH method especially in solid dynamics, still poses some challenges that reduce its efficiency and need respective improvements. This paper reviews advances so far done in SPH method and its application in solid dynamics with the key
focus on weaknesses of the method and soundness of the recommended solutions through reviews from recent research, from which
recommendations for further improvements have been presented as well. Findings from reviewed papers show that efforts towards
improving various challenges on the classical SPH specifically on dynamics of solids have been done and are hereby acknowledged.
However, critical areas that still pose attention and require further research include criticality on choice of most suitable kernel function that best fulfills all interpolant requirements, criteria for setting of smoothing length and general SPH formulation that appropriately represents dynamic problem of solids other than those which have been covered so far. Special attention on clear way of setting the initial and boundary conditions of the kernel domain is also needed