A helical tow model and numerical simulation of on-line thermal curing of thermoset composites in filament winding

Abstract

A helical tow model of on-line curing of thermoset composites in winding is developed and solved numerically. Actual shape of tow in winding process is considered, and consequently, the modeling of the on-line curing process is more realistic. A numerical grid generation method is developed for the complicated geometry. Transformations of three-dimensional energy equation and its boundary conditions from physical domain to computational domain are performed, which are crucial in numerical grid generation method when an anisotropic medium is involved. A set of concise and regular equations is obtained. The numerical simulation results show that the helical tow model, in stead of a simplified model, should be used when the ratio of the diameter of fiber-wound composite structure to the diameter of tow is small.

Proposal of an optimum cure cycle for filament winding process using a hybrid neural network - first principles model

“…The system was heated by a radiation source and the tridimensional model was solved by the finite volume method. In another paper, Wang et al inserted curvature effects in the system described above. In this way, the model in helical coordinates was submitted to a transformation that carried the system to a computational plane, so that the helical cylinder was treated as a straight cylinder.…”