A Multi-scale Method to Predict Residual Stress Appearance in the Process of on-line Consolidation of Thermoplastic Composites

摘要

On-line consolidation process is a promising non-autoclave technique to design large size parts in aeronautical industry. Residual stress growth during the process is locking significantly the process validation. In this paper, we present a multi-scale modeling based on the constrained natural element method (C-NEM) and on the proper orthogonal decomposition method which allows to evaluate residual stress growth. The method allows to take into account the thermomechanical properties evolution of the material during the process, which is adominating factor in residual stress development.