Simulation and experimental study on the surface morphology and energy lost of the target material under non-overlapping impact of angular particles

In order to further understand the effect of solid impurities on pipelinewall during erosion, the particle impact process without fluid was extracted for specific study. The effect of multi-impact particles on the wall of pipeline was studied experimentally and simulated. In this experiment, an improved ejection apparatus was implemented to carry out multi-impacts non-overlapping impingement by rhombic particles made of high speed steel(W18Cr4V) on the AA6061 aluminum alloy plate through changing particle angle, incident angle, orientation angle and impact velocity. As a result, each particle's penetration depth was investigated and particles' rebound trajectory can be described through this experiment as well as surfacemorphology of the target material after impingement. The ductile damage criterion, shear damage criterion and MSFLD damage criterion were jointly implemented in ABAQUS/CAE software to simulate the whole process of collision which proved to be effective by getting consistent result compared-with experimental data. It is found that under the condition of continuous non-overlapping impact, the target material produces a small work hardening effect in the impact area by converting kinetic energy ofmoving particles into internal energy of plate so as to reduce the penetration depth of each impact particle. (C) 2020 The Chemical Industry and Engineering Society of China, and Chemical Industry Press Co., Ltd. All rights reserved.

Automated summary

The effect of multi-impact particles on the wall of the pipeline was studied using experimental and simulation methods. It was found that under continuous non-overlapping impact conditions, the target material experienced a small work hardening effect, reducing the penetration depth of each impact particle.