The Curing Simulation And Prediction Of Shape Distortion Of Thermoset Composite Reinforced With 3d Woven

Abstract

The general modeling methodology for thermoset composite reinforced with 3D woven is described. In this study the focus is on the curing simulation и prediction of shape distortion for thermoset composites in ABAQUS with user subroutines. The procedure of homogenization and determination of effective properties of a thermoset composite reinforced with 3D woven for the rubbery and glassy state of the matrix is also described in detail. Depending on the thermoset polymer type, the different cure reaction formulations are implemented. The temperature expansion and chemical shrinkage tensors at each time step are set depending on the degree of cure and the glass transition temperature. Curing model with piecewise constant elastic modules is used. The model takes into account the shape distortion of the part due to chemical shrinkage and thermal expansion of the material. Curing simulation and prediction of shape distortion results for U-shaped part for Kamal-Sourour reaction type is presented. The effective properties of the composite reinforced with 3D woven for the rubbery and glassy states of the matrix are obtained.

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

“…These formulas include inplane and through-thickness thermal and isothermal chemical shrinkage, temperature change, and initial angle. In [7][8][9], curing simulation methods is presented, when interaction between part and mold is imitated with using constraints. In [10][11][12], Svanberg studied three different boundary conditions: freestanding for imitation of mold which is very soft compared to the composite; fully constrained part for rigid mold imitation; and with frictionless contact conditions between part and mold.…”