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Table 1 Material properties and FE elements for the control (or unwrapped) column and the eight columns in Fig. 2.

From: Concentrically Loaded Circular RC Columns Partially Confined with FRP

Material Parameter FE element
Concrete \( f^{\prime}_{c} \)   20.68 MPa 3 ksi SOLID 65
55.16 MPa 8 ksi
\( E_{c} \)   21.50 GPa 3118 ksi
35.13 GPa 5095 ksi
Steel \( f_{y} \)   413.68 MPa 60 ksi LINK 180
\( A_{s} \) \( \phi \) 6 32 mm2 0.05 in2
\( \phi \) 10 71 mm2 0.11 in2
FRP \( t_{f} \)   0.15 mm 0.0059 in SHELL 181
\( f_{fu} \) 2848 MPa 413 ksi
\( E_{f} \) 139 GPa 20,160 ksi