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Hygrothermal degradation of elastic properties of fiber reinforced composites: A micro-scale finite element analysis

机译：纤维增强复合材料弹性性能的湿热降解：微尺度有限元分析

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In this paper, the effect of hygrothermal conditions on elastic properties of polymeric composite materials is investigated by the finite element method. A micromechanical degradation model is developed based on Fick's second law utilizing an ABAQUS python scripting micro modeling (APSMM) and an ABAQUS parallel finite element analysis (APFEA). The APSMM algorithm is used to study the degradation of elastic constants of a fiber-reinforced polymeric composite (AS/3501?5) under specific hygrothermal conditions, while, the APFEA scheme is employed to solve the problem under time-dependent (transient) hygrothermal conditions. The results are verified against available experimental data. The main advantage of the proposed methods is that by experimentally determining the composite material properties only at one particular temperature and humidity condition, these properties can be obtained after any time of exposure to constant or timevarying hygrothermal conditions. Furthermore, these methods can be extended to analyze different types of composites with any kind of material and/or construction.
机译：本文采用有限元法研究了湿热条件对聚合物复合材料弹性性质的影响。基于Fick的第二法利用ABAQUS Python脚本微型建模（APSMM）和ABAQUS并行有限元分析（APFEA），开发了微机械降解模型。 APSMM算法用于在特定湿热条件下研究纤维增强聚合物复合物（AS / 3501〜5）的弹性常数的降解，而APFEA方案用于解决时间依赖（瞬态）湿热的问题状况。结果针对可用的实验数据验证。所提出的方法的主要优点是通过实验仅在一个特定温度和湿度条件下确定复合材料性质，可以在暴露于常数或时差的湿热条件后获得这些性质。此外，可以扩展这些方法以分析具有任何类型的材料和/或构造的不同类型的复合材料。

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