Journal article
Influence of bulk and interfacial properties on shock compression of metal powders. I. Interaction of a pair of particles
Journal of applied physics, Vol.124(13), p.134903
10/07/2018
DOI: 10.1063/1.5030212
Abstract
This paper studies the physics of shock compaction of metallic powder mixtures by focusing on two particles interacting under conditions of high compressive strain rates. Particle-particle interactions are simulated using a sharp interface Eulerian approach. Specifically, the present work seeks to understand how the disparity in bulk material properties such as yield strength and impedance leads to differences in spreading, heating, and contact area of the materials. In addition, the effects of interfacial phenomena such as friction and interfacial melting are examined using the sharp interface framework. The results show that the extent of interfacial contact between the materials is affected by material deformation and jetting. Of the material properties studied, the impedance mismatch exerts the highest influence on the heating of materials. Material yield strength also plays a significant role; the melting of materials is shown to play a minor role in the spreading and evolution of contact of the materials for the shock strengths tested. By focusing on two particles, this work provides insights elucidating the physics of shock compaction of powder mixtures, specifically the influence of bulk and interfacial properties on the extent of interfacial contact between dissimilar materials.
Details
- Title: Subtitle
- Influence of bulk and interfacial properties on shock compression of metal powders. I. Interaction of a pair of particles
- Creators
- Alexia de Brauer - Department of Mechanical and Industrial Engineering, The University of Iowa, Iowa City, Iowa 52242, USAH. S Udaykumar - Department of Mechanical and Industrial Engineering, The University of Iowa, Iowa City, Iowa 52242, USA
- Resource Type
- Journal article
- Publication Details
- Journal of applied physics, Vol.124(13), p.134903
- DOI
- 10.1063/1.5030212
- ISSN
- 0021-8979
- eISSN
- 1089-7550
- Number of pages
- 19
- Grant note
- F15A-T28-0153 / Air Force STTR program
- Language
- English
- Date published
- 10/07/2018
- Academic Unit
- Injury Prevention Research Center; Mechanical Engineering
- Record Identifier
- 9984121870502771
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