Papers abstract:

Many finite element (FE) models for the impacts of ultrahigh-velocity micro-particles on ductile materials have been developed in the recent years. However, few FE models on brittle materials were found from the literatures. This paper presented an attempt to model the ultrahigh-velocity (417– 528 m/s) impact process for alumina ceramics. The methodology involved the FE method analysis to estimate the volume of material removal based on the Johnson–Holmquist ceramic material (JH-2) model. Subsequently, the depth of penetration (DOP) on various abrasive waterjet (AWJ) turning parameters was predicted by the FE models and derived mathematical equations. The final depths of penetration predicted by the FE models were found to be in good agreement with the experimental results. The average relative error between the predicted and experimental results was lower than 15 %. Furthermore, the preliminary mechanism of ceramic material removal was analyzed from the FE models. Under ultra-high velocity impact, the ceramic material removal stemmed from the initiation and propagation of the cracks. The large-scale ceramic material removal was caused by the crack coalescence. Thus, the DOP on AWJ turning process can be effectively predicted by the FE models. Expectantly, this paper will supply a guidance to select a proper method for predicting the AWJ turning process.

Product Overview:
This tutorial provides a step-by-step Abaqus implementation of a single garnet particle impacting a ceramic target, adapted from the referenced ISI paper. The simulation replicates ultrahigh-velocity erosion in brittle materials, with JH-2 parameters sourced from Abaqus documentation. Key simulation steps include:

• Creation of a ceramic target (1 mm × 400 µm × 400 µm) and hemispherical garnet abrasive (90 µm radius).
• Assignment of JH-2 material properties to the ceramic and elastic properties to the garnet.
• Dynamic explicit analysis with element deletion to model fracture.
• Boundary conditions: Fixed target surfaces, initial garnet velocity (−620 m/s).
• Mesh refinement in the impact zone (30 elements along edges).

In this tutorial, single-particle impacts on brittle ceramics are simulated, according to data from the work of Liu et al.