Research on Dynamic Response of Concrete-Filled Steel Tube Columns Confined with FRP under Blast Loading

Table 3

Variables of the steel material model.

Variable	RO	E	PR	SIGY	ETAN	BETA	SRC	SRP	FS	VP
Unit	g/mm^3	MPa	—	MPa	MPa	—	—	—	—	—
Value	7.83 × 10^−3	2.08 × 10^5	0.3	292.5	2100	0	40	5	0.25

RO: mass density; E: Young’s modulus; PR: Poisson’s ratio; SIGY: yield stress; ETAN: tangent modulus; BETA: hardening parameter; SRC and SRP: strain rate parameters; FS: effective plastic strain for eroding elements; VP: formulation for rate effects.