Abstract
A new method for analyzing elastic-plastic behavior of solid material was developed based on Moving Particle Semi-implicit Method (MPS). The acceleration of the particle is divided into elastic and plastic components. While the previous MPS model is applied to the elastic component, new tensor model is developed and applied to the plastic component. For plastic analysis, Prandtl-Reuss equation was adopted. A finite thickness plate with compressive displacement is simulated as a test and the result showed good validity.