Engineering Method for the Thermal Mechanical Erosion of C/C Composite with the Mesoscale Ablation Model

A physical model to simulate the mesoscale morphology evolution of carbon fiber is established to characterize the thermal mechanical erosion behavior of C/C composite in high temperature and high pressure gas flow. The process of mechanical erosion of single carbon fiber is calculated by the DSMC method. The fracture criteria and mesoscale mechanical erosion model of carbon fiber are developed by theory of mechanics of materials. Finally, an engineering method for prediction of mesoscale mechanical erosion is formulated, and the predictions agree well with the experiment results.