Study on Mechanical Behavior of Fully Encased Composite Slender Columns with High-Strength Concrete Using FEM Simulation

Table 4

Material properties of column specimens for the current study [6, 14].

	Concrete	Structural steel	Main bar	Tie bar
Compressive stress (Fck)	90–120 MPa
Yield stress (Fy)	—	355 MPa	460 MPa	500 MPa
Ultimate stress (Fu)	—	457.95 MPa	541.65 MPa	581.25 MPa
Modulus of elasticity (E)	43.6305–47.27 GPa	210 GPa	200 GPa	200 GPa
Poison’s ratio ()	0.2	0.3	0.3	0.3
Yield strain (εy)	0	0.00169	0.0023	0.0025
Ultimate strain (εu)	0.0035	0.1551	0.1748	0.175