Experimental and Theoretical Study of Sandwich Panels with Steel Facesheets and GFRP Core
Table 5
Comparisons of flexural capacity between experimental and FEM results.
Serial number of specimen
Ultimate flexural capacity (kN)
Ultimate displacement (mm)
Finite element results
Experimental value
Relative error (%)
Finite element results
Experimental value
Relative error (%)
S()-GFRP
91
104
−12.5
17.82
19.87
−10.3
F()-GFRP
169
184
−8.1
14.1
15.13
−6.8
S()-GFRP
114
128
−10.9
6.53
7.13
−8.5
S()-GFRP
129
140
−7.8
5.4
5.72
−5.6
S()-GFRP
171
164
4.3
4.27
4.41
−3.2
S()-GFRP
197
212
−7.1
3.02
3.5
−13.7
Note: the relative error is calculated based on the following formula: (results from the finite element method − experimental results)/experimental values.