Abstract
Particle fracture can influence material failure and removal mechanisms in high velocity impact progress. In this paper, a coupled finite element method-smooth particle hydrodynamics numerical model of a single irregularly shaped particle erode metal surface was established to investigate the particle fracture and metal surface erosion. The Johnson–Cook model and Johnson–Holmquist-II model were introduced to describe the deformation of ductile materials and the fracture of brittle materials, respectively. Subsequently, the erosion process of a single irregularly shaped particle impacting different material properties of metal was studied. The results showed the following: (1) The JH-2 constitutive model can simulate the fracture of brittle particles accurately, and the results between simulations and experiments were in reasonable agreement. (2) The extent of particle fracture was lower on softer substrates than on the harder ones. (3) The orientation angle was a key factor affecting secondary impacts of brittle particles. (4) The rigid particle made more damage on the substrate than the brittle one under the same condition.
Highlights
The damage caused by solid particles flow in the high-speed fluid stream impact on the surface of the material is called “erosive wear.”1 It is the most common failure form of metallic materials
Keeping the initial incident conditions unchanged, e.g., particle shape, size, incident velocity, impact angle, and orientation angle, the plastic deformation of metal substrate and particle fracture caused by the silicon carbide particles I impacting on different metal materials were studied
Numerical simulation of particle fragmentation and surface erosion due to single brittle particle impact was performed in this paper
Summary
The damage caused by solid particles flow in the high-speed fluid stream (gas or liquid) impact on the surface of the material is called “erosive wear.” It is the most common failure form of metallic materials. If a small angle formed between the cutting edge of the particles and the material substrate, the fracture of the particles will occur in a plane perpendicular to the cutting edge and result in two fragments Under this condition, the crater lips generated by the initial impact is peeled off and removed by the secondary impacts of fragments, so particle fracture can improve erosion wear. Scitation.org/journal/adv substrate with silica abrasives at an incident velocity of 98 m/s and an incident angle of 90○ and found that the erosion rate was slightly increased when using the fractured particle after one cycle, which was consistent with the findings of Shipway and Hutchings who found that silica particles were sharper after impact than before. The SPH models and FE models were coupled together by tie constraint
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
