The Coupled Thermo-Chemo-Mechanical Peridynamics for ZrB2 Ceramics Ablation Behavior

The ablation of ultra-high-temperature ceramics (UTHCs) is a complex physicochemical process including mechanical behavior, temperature effect, and chemical reactions. In order to realize the structural optimization functional design ultra-high ceramics, coupled thermo-chemomechanical bond-based peridynamics (PD) model proposed based on ZrB2 oxidation kinetics thermomechanical peridynamics. Compared with traditional thermo-mechanical model, considers influence reaction resistance ceramic materials. verify reliability coupling damage kinetic are established respectively investigate applicability in dealing coupling, crack propagation, reaction, results show that reliable. Finally, thermo-chemo-mechanical used simulate propagation plate under thermal shock load, oxide layer plays good role preventing heat transfer protecting internal Based PD fully this paper innovatively introduces analyze parameter changes caused by growth strain protection ability ceramics. provides an effective simulation technology for UTHCs.