| 炭黑聚集体在橡胶中的力学性能分析 |
| Mechanical Properties Analysis of Carbon Black Clusters in Rubber Matrix Composites |
| 投稿时间：2016-09-18 修订日期：2016-09-18 |
| DOI： |
| 中文关键词: 炭黑聚集体 橡胶基材料 细观力学 代表体积单元 有限元分析 |
| 英文关键词: carbon black clusters rubber matrix composites mesomechanics representative volume element finite element analysis |
| 基金项目:国家自然科学基金资助(21274072, 51273099),绿色轮胎与橡胶协同创新中心开放基金(2014GTR0005),工业装备结构分析国家重点实验室开放基金(GZ1213)。 |
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| 中文摘要: |
| 利用Digimat多尺度分析软件建立了五种不同体积分数和相同体积分数下五种不同炭黑聚集形态的多颗粒炭黑聚集体随机分布的三维代表体积单元模型,研究了橡胶形变、应力集中和炭黑聚集体形态对橡胶力学性能的影响。结果表明：通过与文献模拟结果和实验数据比较验证了本文模型是合理的；炭黑聚集体的形变很小,应力集中点主要位于炭黑聚集体与炭黑聚集体相接近的区域；发现用三棱柱和二十面体模型描述炭黑聚集体形态更能真实地反映橡胶的力学行为。 |
| 英文摘要: |
| Five different volume fractions and five different shapes in the same volume fraction carbon black of representative volume element models with multi-particles and particles random distribution were established with multiscale analysis software Digimat to analyze the deformation and stress concentration of rubber, along with the effect of shape of carbon black clusters on the mechanical properties of rubber. Results show that the models proposed in this paper are reasonable by comparison with the reference’s simulation and experimental results. The deformations of carbon black clusters are little and the stress concentrations appear in the vicinity of the carbon black clusters. Moreover, we found that the prism and 20 faces polyhedron models to describe the shape of carbon black clusters may reveal the mechanical behavior of rubber much better. |
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