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Prediction of the inter-fiber mechanical properties of composites: Part I standardization micro-scale modelling method and damage analysis

机译：复合材料纤维机械性能的预测：第一部分标准化微级建模方法和损伤分析

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摘要

In this paper, a standardization modelling method of composites micro-scale simulation is proposed, in which the random distribution of fiber, hydrostatic pressure sensitivity yield behavior of polymer matrix and friction effect in fiber/matrix interface are considered. After the detailed introduction of the constitutive models of polymer matrix and interface, the methods to determine the input data of polymer, fiber and interface are provided. Then the stress-strain curves of composites under uniaxial loads were simulated and compared with experiment, which proving the accuracy of the micro-scale model. Besides, the comparison of failure envelopes under transverse stress and longitudinal shear stress of simulation and experiment further verified the validity of the model. Finally, the influence of the geometry, friction coefficient and interface properties on the mechanical properties of composites were discussed. The proposed modelling method provides a standardization means to establish micro-scale model, thus easy to be reproduced by other researchers.
机译：本文提出了一种复合材料微级模拟的标准化建模方法，其中考虑了聚合物基质纤维的随机分布，纤维/基质界面中的摩擦效应。在详细介绍了聚合物基质和界面的本构模型之后，提供了确定聚合物，光纤和界面的输入数据的方法。然后，模拟单轴载荷下复合材料的应力 - 应变曲线与实验进行比较，从而证明了微尺度模型的准确性。此外，仿真横向应力和纵向剪切应力下的故障信封的比较进一步验证了模型的有效性。最后，讨论了几何形状，摩擦系数和界面性质对复合材料力学性能的影响。所提出的建模方法提供了建立微尺度模型的标准化装置，从而容易被其他研究人员再现。

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