A rapid method for simulating residual stress to enable optimization against cure induced distortion

In this paper a rapid method for residual cure stress analysis from composite manufacturing is presented. The uses high-fidelity path-dependent kinetics subroutine implemented in ABAQUS to calibrate linear elastic model. model accounts the tool-part interaction, forming pressure, and changing modulus during rubbery phase of matrix curing. Results are used calculate equivalent lamina-wise coefficients thermal expansion (CTE) 3 directions temperature analysis. goal accurately predict distortions large complex geometries as rapidly possible use an optimization framework. A carbon-epoxy system studied. Simple coupons parts manufactured measured with D scanner compare simulated distortion. presented accuracy limitations simulation discussed particular focus on implementation numerical