Abstract
In this study, creep analysis of plain-woven GFRP laminates based on a homogenization macroscopic constitutive model is conducted. To this end, an elastic-creep macroscopic constitutive model which is able to express strong anisotropy of composites is introduced, and the material parameters in the model are determined based on the results of a triple-scale homogenization method using a unit cell at room temperature (25°C) and elevated temperature (80°C), respectively. Then, creep analyses of plain-woven glass fiber/epoxy laminates are conducted on four uniaxial loading condition, i.e. θ = 0°, 15°, 30° and 45°, using the macroscopic constitutive model and the triple-scale homogenization method at the both temperature. It is found that the analysis results of constitutive model are in good agreement with those of the triple-scale homogenization method.
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