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.
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.
This paper proposes the general approach to modelling the manufacturing process of thermoset composite reinforced with 3D woven based on the digital twin concept. The focus is on the methodology for determining the permeability of a dry 3D woven. Simulation results in ANSYS CFX are presented. Also, a curing simulation technique in ABAQUS with user subroutines for a thermosetting composite is described. The results of curing simulation for the Kamal-Sourour model are presented in more detail and the prediction of shape distortion for a composite U-shaped part as a result of chemical shrinkage and thermal expansion is performed.
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