Volume 29 Issue 6
Jan 2016
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YUAN Hong, ZHAO Shi-Cao, SONG Zhen-Fei, MO Jian-Jun, TAN Fu-Li, TAO Yan-Hui. Influence of Surface Roughness on Shock Melted Tin[J]. Chinese Journal of High Pressure Physics, 2015, 29(6): 443-448. doi: 10.11858/gywlxb.2015.06.006
Citation: YUAN Hong, ZHAO Shi-Cao, SONG Zhen-Fei, MO Jian-Jun, TAN Fu-Li, TAO Yan-Hui. Influence of Surface Roughness on Shock Melted Tin[J]. Chinese Journal of High Pressure Physics, 2015, 29(6): 443-448. doi: 10.11858/gywlxb.2015.06.006

Influence of Surface Roughness on Shock Melted Tin

doi: 10.11858/gywlxb.2015.06.006
  • Received Date: 05 Jan 2015
  • One dimensional plate micro-spall impact experiments were performed on two samples of melted tin with different surface roughness using our own newly developed momentum device to measure the momentum of the ejecta at different positions and moments.Using the Autodyn Smooth Particle Hydrodynamics (SPH) solver, we simulated the microscopic process of the shock-induced micro-spall underneath the sample surface and investigated the evolution of the interfacial instability along with the transmission of the reflective wave in the unloading process.The study shows that the surface roughness of several micro-meters can lead to significant growth of disturbance during the wave reflection, and that the fully fragmented particles of the melted metal bearing both longitudinal and radial transversal speed components are in agreement with those of the experimental results.

     

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