Interfacial kinematics and governing mechanisms under the influence of high strain rate impact conditions: Numerical computations of experimental observations

Inverse prediction of local interface temperature during electromagnetic pulse welding via precipitate kinetics

“…The grains are flattened due to the high strain rate shearing. Macroscopic elongations within a highly confined shearing have also been clearly evidenced in previous studies [12]. The elongated fine grains are dominant for Sample 2 (Fig.…”

A new nature of microporous architecture with hierarchical porosity and membrane template via high strain rate collision

“…The progression of the impact between the two parts of the weld involves strong shearing at high strain rate. Several macroscopic examinations evidence shear instability phenomena such as wave formation, wake and vortex formation and jetting and emission of particles from the interface [19,[22][23][24]. It was also observed that the grains adjacent to the bonded interface are highly elongated and flattened to form a shear affected zone (SAZ), at the vicinity of the interface [19,23].…”

A semi-Lagrangian reproducing kernel particle method with particle-based shock algorithm for explosive welding simulation

“…The upper limit of the color range is the melting temperature Fig. 24 Jet formation at approximately t = 0.9 μs with different discretizations: the initial nodal distance at the interface, h x , h y , is a (12,6), b (8,4), and c (6, 3) in micrometer of the mild steel, 1811 K. The material points with white color indicate the potential molten area. The tail and head regions contain a large amount of molten material points, which is consistent with the experimental observation (Fig.…”

“…The ability to capture jetting was shown, but the interfacial waves observed in experiments was not. In more recent studies, both jetting and interfacial waves in magnetic pulse welding were captured by Eulerian FEM [6,7]. However, in the Eulerian description, the interface is smeared, and an interfacial tracking technique is required, which is non-trivial.…”