Progressive damage and elastic-plastic behavior of CF/Al composites during transverse tensile process CF/Al复合材料横向拉伸渐进损伤与弹塑性力学行为

Q3 Materials Science
Zhenjun Wang, L. Tian, C. Cai, H. Yu, Zhifeng Xu, Gui Wang, M. Dargusch
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引用次数: 1

摘要

采用真空辅助压力渗透技术制备了单向石墨纤维M40J增强铝合金复合材料(CF/Al复合材料)。采用细观力学有限元法和拉伸试验方法对复合材料的弹塑性力学行为和损伤演化行为进行了评价。根据数值模拟和实验结果,分析了横向拉伸过程中界面性能对营地力学性能的影响。结果表明,所建立的微力学代表性体积元(RVE)模型能够较好地评价复合材料在横向拉伸过程中的应力-应变行为。界面和基体合金的初始损伤、损伤累积和破坏导致复合材料断裂。界面性能对基体合金的韧性损伤演化和破坏有重要影响,最终决定了CF/Al复合材料的横向断裂力学性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Progressive damage and elastic-plastic behavior of CF/Al composites during transverse tensile process CF/Al复合材料横向拉伸渐进损伤与弹塑性力学行为
The unidirectional graphite fiber M40J reinforced aluminum alloy composites (CF/Al composites) was fabricated by vacuum assisted pressure infiltration technology. The elastic-plastic mechanical behavior and the damage evolution behavior of composites was evaluated using micromechanics FEM and tensile testing method. According to the numerical simulation and experimental results, the influence of interface property on the mechanical properties of the campsites during transverse tensile process was also analyzed. The results show that the micromechanical representative volume element (RVE) model established can evaluate the stress-strain behavior of the composites in transverse tensile process. The occurrences of initial damage, damage accumulation and failure in the interface and matrix alloy lead to the fracture of the composites. There is an important influence of interface property on the ductile damage evolution and failure of matrix alloy, which eventually determined the transverse fracture mechanical properties of the CF/Al composites.
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CiteScore
1.70
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