| About this Abstract |
| Meeting |
Materials Science & Technology 2020
|
| Symposium
|
Micro- and Nano-Mechanical Behavior of Materials
|
| Presentation Title |
Atomistic Simulations of Collisions between SiC Nanoparticles |
| Author(s) |
Kevin Walier Kayang, Alexey N. Volkov |
| On-Site Speaker (Planned) |
Kevin Walier Kayang |
| Abstract Scope |
Interaction of SiC nanoparticles in the head-to-head and oblique collisions is studied in atomistic simulations for various nanoparticle size, geometric collision parameter, and temperature. The simulations are performed for both crystalline and amorphous nanoparticles in a broad range of nanoparticle velocities, from those that result in adhesion of nanoparticles to those that induce partial melting or fragmentation of nanoparticles. The propagation of the shock waves and phase transformations in the nanoparticles induced by high-velocity impact are studied. The impact-induced deformation of nanoparticles is compared with the deformation observed during uniaxial quasi-static compression of the same nanoparticles. The center-of-mass velocities, angular velocities, and temperatures of individual particles are obtained as functions of time and are used to calculate values of normal and tangential accommodation coefficients of the nanoparticle relative velocity. The simulation results are used to obtain maps of collision outcome on the plane of relative velocity and geometric collision parameter. |