Abstract
A thermo-structural model was previously developed and validated for predicting the failure of compressively loaded fiber-reinforced polymer (FRP) laminates by one-sided heating in fire. The model consists of a one-dimensional pyrolysis model to predict the temperature and decomposition response. An integrated structural model uses the thermal predictions to predict thermally-induced bending caused by one-sided heating. Failure is predicted based on a localized failure criterion using the compressive strength of the material. The analysis was performed by slightly perturbing the thermal and mechanical properties to determine their effect on predictions of the out-of-plane deflection and time-to-failure. The predicted out-of-plane deflections were affected by several properties, including the in-plane thermal expansion and residual elastic modulus. The residual elastic modulus also had a significant effect on time-to-failure predictions. This demonstrates the sensitivity of the model to these parameters in predicting both the time-to-failure and deflection behavior of the laminate.
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