论文部分内容阅读
提出了纤维增强复合材料断裂有限元模型,该模型既用弹簧单元考虑了基体与纤维之间的分离,又用接触单元考虑了基体与纤维之间的摩擦,较真实地模拟了纤维增强复合材料的断裂过程。通过有限元计算,预测了基体与纤维之间的界面结合强度对整个复合材料断裂模式的影响。还对强弱两种不同基体弹性模量的材料进行进一步的探讨。对比其他文献,本文中预测结果与真实情况较为吻合。结果表明,对于纤维增强复合材料,不论是强基体还是弱基体,适中的界面结合强度有助于提高其韧性及整体抗拉强度。
The finite element model of the fracture of fiber reinforced composites was proposed. The model not only considered the separation between the matrix and the fiber by the spring element, but also considered the friction between the matrix and the fiber by the contact element, which more accurately simulated the fiber reinforced composite material The rupture process. Through the finite element calculation, the influence of interface bonding strength between matrix and fiber on the fracture mode of the whole composite was predicted. The strength and weakness of two different matrix elastic modulus of the material for further discussion. Compared with other documents, the prediction results in this paper are in good agreement with the real situation. The results show that, for fiber reinforced composites, both the strong matrix and the weak matrix, the moderate interfacial bonding strength helps to improve its toughness and overall tensile strength.