Prediction of the structural stability of a composite structure under dynamic loads - Consideration of thermomechanical coupling

A methodology is proposed for determining the structural stability of a carbon-epoxy structure. Implemented on the SYSTUS software, the calculation is translated for the user as a supplementary function of the calculation code. The stress field is analyzed using the finite-element method, making it possible to study four loading levels in the 'local' fiber network: longitudinal, transverse, longitudinal shear, and transverse shear. Using experimental data, one can determine the field of heat sources induced by the stress field. Numerical results obtained for a four-layer carbon-epoxy tube demonstrate the potential of the proposed approach.