The fatigue hysteresis behavior of SiC_f/Ti composites at two-stage cyclic loading has been investigated in present analysis. The effect of fiber volume fraction, loading sequence and fiber shape parameters on the fatigue hysteresis loops of composites were analyzed. Based on the law of interface slip during loading and unloading, the hysteresis loop models considering the failure criterion of fibers and interface shear stress degradation have been developed. Then, the validity of the model was confirmed by experiments. The study provides a basis and reference for further study of mechanical properties under multistage or even random cyclic loading.

中文翻译：

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SiC的疲劳磁滞回线模拟F 阶段循环载荷下的/ Ti复合材料

在本分析中，研究了SiC _f / Ti复合材料在两阶段循环载荷下的疲劳磁滞行为。分析了纤维体积分数，加载顺序和纤维形状参数对复合材料疲劳磁滞回线的影响。根据加载和卸载过程中界面滑移的规律，建立了考虑纤维破坏准则和界面剪切应力退化的磁滞回线模型。然后，通过实验证实了该模型的有效性。该研究为进一步研究多阶段甚至随机循环载荷下的力学性能提供了基础和参考。