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| Main Authors: | , , , , , , |
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| Format: | Artículo Open Access |
| Published: |
Wiley
2025
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| Subjects: | |
| Online Access: | https://onlinelibrary.wiley.com/doi/10.1002/prep.12049 |
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Table of Contents:
- Compaction Analysis of Highly Filled Crystal‐Polymer Composites Using a Combined Finite‐Discrete Element Concept Yin Zhou Tong Wen Xu Wang Dongpo He Zimeng Yang Jiaxun Xue Guoqiang You Propellants, Explosives, Pyrotechnics ABSTRACTMany energetic materials have a mesoscale structure of highly filled crystal‐polymer composites, in which the crystals’ surface is surrounded by a thin‐layer polymer binder. The special discontinuities pose challenges to analyzing the compaction process involving a tremendous amount of discrete particles for forming functional parts. In this study, a heterogeneous two‐dimensional model using the concept of combined finite‐discrete element method that can reflect the original composite structure of polymeric binder‐coated crystals is developed. The simulation results of the die compaction process are compared with physical experiments. The results show that the theoretical analysis can capture the densification process, mechanical evolution characteristics, and failure behavior, which include the crushing behavior inside the crystals and the debonding behavior at the interface between the crystals and the polymeric binder. In addition, the effects of compaction speed, temperature, and microstructure on the compaction results are systematically investigated. 10.1002/prep.12049 http://onlinelibrary.wiley.com/termsAndConditions#vor