Experimental and Numerical Analysis of Nonlinear Flexural Behaviour of Lattice-Web Reinforced Foam Core Composite Sandwich Panels

Table 2

Experimental results of the ultimate load capacity, displacement, and ductility coefficient.

Specimen	Bearing capacity at elastic limit (kN)	Displacement at elastic limit Dy (mm)	Ultimate bearing capacity (kN)	Ultimate displacement Du (mm)	Ductility coefficient μ
OS50	27.2	32.1	27.2	32.1	1
OS75	18.3	16.5	18.3	16.5	1
OS100	32.0	20.5	32.0	20.5	1
TS75-50	39.9	19.8	53.2	40.5	2.0
TS75-75	71.3	16.2	83.3	27.6	1.7
TS75-100	87.5	13.6	108.8	25.7	1.9
TS125-75	52.6	14.3	65.0	29.1	2.0
TS175-75	35.6	12.1	49.8	31.2	2.6