A study of compaction of composite particles by multi-particle finite element method |
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Authors: | Jing Zhang |
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Affiliation: | aDepartment of Mechanical Engineering, University of Alaska Fairbanks, 306 Tanana Loop, Fairbanks, AK 99775, USA |
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Abstract: | We study the compaction of composite mixture of soft and hard micro-/nano-size particles using multi-particle finite element method. In this method, each particle is fully discretized into finite element mesh. Local non-uniform contact deformation and non-uniformity stress chains transmitted through the composite are well illustrated. In this work, we focus on the effect of inter-particle friction and volume fraction of hard particles on compaction pressure. Results of closed die compaction of 400 two-dimensional monosize spherical particles of zero and 40% volume fraction hard particles are presented. The results show that compaction pressure increases with inter-particle friction and volume fraction of hard particles. The predicted compaction pressure curves are in good agreement with experimental data and other models. |
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Keywords: | B Powder consolidation B Compaction C Multi-particle finite element method A Micro-/nano-composites |
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