Dynamic Response and Optimal Design of Curved Metallic Sandwich Panels under Blast Loading

Table 1

Mechanical properties, J-C model constants, and failure parameters for the face-sheet materials of the curved sandwich panel.

Face-sheet material	Density ρ (kg/m^3)	Young’s modulus 𝐸 (GPa)	Poisson’s ratio 𝜈	Yield stress 𝜎𝑦 (MPa)	Tangent modulus 𝐸𝑡 (GPa)	J-C material constants and failure parameters
						𝐴(MPa)	𝐵(MPa)	𝐶	𝑛
						𝐷1	𝐷2	𝐷3	𝐷4
RHA steel [6, 22]	8000	210	0.28	—	—	950; 0.10	560; 0.76	0.014; 1.57	0.26; 0
Al-2024 T3 [23]	2680	72	0.33	318	0.737	—	—	—	—