Multi-Scale Creep Analysis of Angle-Ply CFRP Laminates Based on a Homogenization Theory

概要

論文の詳細を見る
In this study, the creep behavior of angle-ply CFRP laminates subjected to an in-plane uniaxial load at an elevated temperature is analyzed based on the time-dependent homogenization theory developed by the present authors. For this, a multi-scale simulation method applicable to the creep analysis of CFRP laminates is described using the time-dependent homogenization theory. To confirm the validity of the method, the creep analysis of a unidirectional carbon fiber/epoxy laminate at an elevated temperature is firstly performed using the method. Comparison between the analysis results and experimental data reveals that the present method accurately predicts the creep behavior of unidirectional CFRP laminates. Then, the present method is applied to the creep analysis of three kinds of angle-ply carbon fiber/epoxy laminates, i.e. [±30°] , [±45°] and [±60°] , subjected to an in-plane uniaxial load at an elevated temperature. The results obtained agree well with experimental data for all of the laminates, showing that the present method can be successfully applied to the creep analysis of angle-ply CFRP laminates.