Computer simulation of solid-particle erosion and related phenomena using a micro-scale dynamic model

In this work, a micro-scale dynamic computational model (MSDM) was proposed to simulate the erosion process. It was developed based on Newton's law of motion. This model was applied to single-phase and composite materials. Influences of the shape, size, velocity and impact angle of solid particles on erosion were studied. In addition, erects of the reinforcing phase, the bonding strength of the reinforcing phase/matrix interface, the impact velocity, the solid-particle size and the size ratio of the solid-particle to the reinforcing phase on erosion of the composite were also investigated. The mechanisms responsible for the erosion behavior of both brittle and ductile materials are discussed. The model was also applied to simulate the indention process to investigate the interfacial bond strength and process of crack propagation in composite materials. Sliding wear was also modeled to investigate the influence of volume fraction of nano particles on sliding wear of a TiNi/TiC pseudoelastic composite.