Study on Low-Velocity Impact Performance of Coal-Based Carbon Foam Sandwich Structures in Thermal Protection Systems

Coal-based carbon foam (CCF) has been widely used in the hypersonic vehicles’ thermal protection system (TPS) due to its good insulation and mechanical properties. In addition, CCF can absorb large quantities of energy when crushed so that sandwich structure effectively improve impact resistance TPS. However, there are few studies on performance structures, even constitutive model (MCM) CCF. This research work built MCM studied low-velocity A number experiments were implemented establish an effective comprehensive which three parts: basic properties, multiaxial loading failure criteria, hardening rules. series tests two structures carried out, finite element models (FEMs) established according simulate these tests. The experimental simulation results agreement. damage mechanism was revealed by FEMs. be not only for process but also analysis other will help design at a low cost.