锻压技术

短碳纤维增强铝基复合材料拉伸性能数值模拟分析

英文标题：Numerical simulation analysis of tensile properties for short carbon fiber reinforced aluminum matrix composites

单位：上海工程技术大学

分类号：TG146

出版年,卷(期):页码：2019,44(12):167-173

摘要：

为了探究碳纤维对复合材料拉伸性能的影响，使用真空吸铸法制备了碳纤维增强铝基复合材料铸件并测试其拉伸性能，将实验所得数据结合Geodict软件分析了碳纤维含量和碳纤维长度对碳纤维增强铝基复合材料的应力、应变分布的影响规律，得到的模拟结果与实验数据吻合良好，为使用真空吸铸法制备碳纤维增强铝基复合材料的后续工作展开和性能提升提供了理论基础。结果表明，随着碳纤维含量的增加，纤维对材料拉伸性能的增强效果越好；随着碳纤维长度的增加，纤维对材料拉伸性能的增强效果逐渐减小，并在5 mm后达到平稳的趋势，当纤维长度为1 mm时，复合材料的拉伸性能较优。

In order to explore the influence of carbon fiber on the tensile properties of composites, the carbon fiber reinforced aluminum matrix composite castings were prepared by vacuum suction casting method and their tensile properties were tested. The influence of carbon fiber content and carbon fiber length on the stress and strain distributions of carbon fiber reinforced aluminum matrix composite was analyzed by combining the experimental data with the Geodict software. The simulation results are in good agreement with the experimental data, which provides research basis for the follow-up work and performance improvement of carbon fiber reinforced aluminum matrix composite prepared by vacuum casting method. The results show that with the increasing of carbon fiber content, the reinforcing effect of fiber on the tensile properties of material is better. Furthermore, with the increasing of carbon fiber length, the reinforcing effect of fiber on the tensile properties of material gradually decreases and becomes stable after 5 mm. When the fiber length is 1 mm, the tensile properties of composites are superior.

基金项目：

国家重点研发项目（2018YFB1307900）；国家自然科学基金资助项目（51805314）；上海市科委重点攻关项目（16030501200）

东星倩（1995-），女，硕士研究生 E-mail：1315434385@qq.com 通讯作者：何涛（1979-），男，博士，副教授 E-mail：hetao@sues.edu.cn

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