|About this Abstract
|7th World Congress on Integrated Computational Materials Engineering (ICME 2023)
|Damage Prediction of Sintered α-SiC Using Thermo-mechanical Coupled Fracture Model
|Jason Sun, Joseph Marziale, James Chen
|On-Site Speaker (Planned)
A coupled thermo-mechanical fracture model is presented to predict the damage of α-SiC as a representation of brittle ceramics over a wide range of temperatures (20-1400°C). Temperature-dependent damage prediction is a crucial link of ICME for ceramics in applications like thermal protection systems of hypersonic vehicles. The model, which has been implemented into MOOSE, links between material properties and performance. The model contains modules of elasticity, damage phase field, and heat conduction. Analytical approaches for determining crack length scales of simple shear and tension are presented. Validation tests are conducted for both flexural strength and fracture toughness over the specified range of temperatures. Both the flexural strength simulation results and mode I fracture toughness results agree with the experimental data. Mode II and mixed mode fracture toughness simulations results are presented with the modified G-criterion. Finally, the parallel computing capabilities of the model are considered in various scalability tests.