均質化理論に基づくCFRTP積層板の熱弾粘塑性解析

抄録

The thermo-elasto-viscoplastic behavior of carbon fiber-reinforced thermoplastics (CFRTP) was evaluated using the homogenization theory taking into account the time dependence of the relation between stress and strain. The thermo-elasto-viscoplastic constitutive equation was newly proposed by introducing temperature dependence into the elasto-viscoplastic constitutive equation of a thermoplastic resin. The thermo-elasto-viscoplastic analysis of the CFRTP laminates was then performed by the finite element method based on the homogenization theory. In the demonstration, uniaxial tensile tests of the CFRTP laminates were performed to confirm the validity of the proposed method. The numerical results showed a good agreement with the experimental results in the elastic and viscoplastic regions for all temperature and loading conditions.