Method for residual strain modeling taking into account mold and distribution of heat transfer coefficients for thermoset composite material parts

Abstract

The article presents a technique for process-induced residual strain modeling for thermoset composite material parts. The model takes into account the mechanical and thermal contact between the part and the mold. The technique is implemented in the ABAQUS software using user subroutines. Using the technique, it is possible to clarify the distribution of the heat transfer coefficient on the surface of the part and mold using the CFD method. Distribution of heat transfer coefficients are obtained in ANSYS CFX under the appropriate process conditions. The method is verified for the U-shaped sample. Also, the results of modeling the stringer-stiffened curved composite panel using the developed technique without taking into account the mold and heat transfer coefficient distribution are presented.

Influence of variable‐stiffness layup configuration on curing deformation of curved‐surface structures

“…The element type for the heat transfer model is DC3D8, while the element type for the curing deformation model is C3D8. The boundary condition (BCs) settings have been adjusted according to the literature 21 to make them more meeting with the actual situation. The BCs of the PAR in the curing cycle are set as Figure 7.…”