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首页> 外文期刊>Proceedings of the institution of mechanical engineers >Analysis and determination for the parameters of 'cohesive element' in numerical model of single fiber composites, II: The strength parameters
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Analysis and determination for the parameters of 'cohesive element' in numerical model of single fiber composites, II: The strength parameters

机译：单纤维复合材料数值模型中“黏性元素”参数的分析与确定，Ⅱ：强度参数

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摘要

In this study, the micro-droplet debonding test for three kinds of different single fiber composites (CCF/epoxy resin-128, CCF/epoxy resin-5228, and CCF/ bismaleimide resin-5428) is carried out. Then the corresponding numerical model for the test is established in the general finite element software ABAQUS and the process of the elastic load transferring in the test is simulated. Based on the numerical results, the reasonable critical debonding load F in the test is analyzed and is extracted from the scattered experimental datum. And it is used to combine with the numerical simulation for the interphase debonding process in the test. So the strength parameters of the cohesive element in the numerical are analyzed and determined. It turned out that in the numerical model for the CCF/Bismaleimide5428 single fiber composite, the strength parameter of the cohesive element is much higher (they are 130MPa). It is demonstrated that the strength of the interphase in this single fiber composite is much stronger than that in the other two single fiber composites. These parameters can also be used to characterize the properties of interphase in composites.
机译：在这项研究中，对三种不同的单纤维复合材料（CCF /环氧树脂-128，CCF /环氧树脂-5228和CCF /双马来酰亚胺树脂-5428）进行微滴剥离测试。然后在通用有限元软件ABAQUS中建立了相应的试验数值模型，并模拟了试验中的弹性载荷传递过程。根据数值结果，分析测试中合理的临界剥离力F，并从分散的实验数据中提取。并与数值模拟相结合进行了测试中的相分离。因此，分析并确定了数值中粘性元件的强度参数。结果表明，在CCF / Bismaleimide5428单纤维复合材料的数值模型中，内聚元素的强度参数要高得多（它们为130MPa）。结果表明，这种单纤维复合材料的相间强度远强于其他两种单纤维复合材料。这些参数也可用于表征复合材料的相间特性。

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