Development of accurate prediction techniques for creep behavior of FRP laminates based on multi-scale analysis and its verification

基于时变均匀化理论的多尺度分析方法，提出了一种准确预测玻璃钢层合板蠕变行为的数值方法。将该方法应用于CFRP层合板的高温蠕变行为分析。分析结果与实验结果吻合较好，说明了该方法的有效性。此外，本文还将该方法应用于平织玻璃钢层合板的蠕变分析。结果表明，平纹织物的层合结构对平织玻璃钢层板的蠕变应变有显著影响。

In this study, a numerical method for predicting the creep behavior of FRP laminates accurately, was developed using the multi-scale analysis based on the time-dependent homogenization theory. The present method was applied to the analysis of the creep behavior of CFRP laminates at an elevated temperature. The results of analysis agreed with the experimental results, showing the usefulness of the present method. Moreover, the present method was also applied to the creep analysis of plain-woven GFRP laminates. It was shown that the laminate configuration of plain fabrics significantly affected the creep strain of plain-woven GFRP laminates.