Model Updating of a Stitched Sandwich Panel Based on Multistage Parameter Selection

Table 2

Material properties of shell element in the equivalent finite element model.

Type	E1 (MPa)	E2 (MPa)	μ12	G12 (MPa)	G23 (MPa)	G31 (MPa)	ρ (kg·m^3)
Skin	5230	5230	0.31	5630	2815	2815	1.63 × 10^3