Free and Forced Vibration Analysis of an Infilled Steel Frame: Experimental, Numerical, and Analytical Methods

Table 1

Summary of different strut modeling approaches [4].

Model	Researchers, year [Reference]	Number of strut(s)	Modeling outlines
1	Holmes, 1961 [14]	One	Modeling the ultimate strength, stiffness, and deflection at failure of the infill
2	Stafford-Smith, 1962 [15]	One	Modeling effective width of the equivalent (linear) strut
3	Stafford-Smith and Carter, 1969 [16]	One	Modeling stiffness, ultimate strength, and cracking load of the infill
4	Mainstone and Weeks, 1970 [17]	One	Modeling stiffness and strength of the infill
5	Mainstone, 1971 [18]	One	Modeling stiffness and strength of the infill
6	Klingner and Bertero, 1978 [19]	One	Modeling the hysteretic response, strength and stiffness of the infill
7	Te-Chang and Kwok-Hung, 1984 [20]	One	Modeling stiffness and strength of the infill
8	Syrmakezis and Vratsanou, 1986 [21]	Five	Considering the effect of the contact length on the moment distribution of the frame as well as strength and stiffness of the infill
9	Zarnic and Tomazevic, 1988 [22]	One	Modeling the lateral strength and stiffness of the infill
10	Schmidt, 1989 [23]	Two	Modeling the frame-infill interaction as well as strength and stiffness of the infill
11	Chrysostomou, 1991 [24]	Three	Modeling the frame-infill interaction as well as the hysteretic seismic response of the infilled frame considering stiffness and strength degradation
12	Saneinejad and Hobbs, 1995 [25]	One	Modeling nonlinear force-displacement response of infill up to the ultimate load
13	Crisafulli, 1997 [26]	Two	Modeling the frame-infill interaction as well as accounting for compressive and shear strength of the infill
14	Flanagan and Bennett, 1999 [27]	One	Modeling corner crushing strength and stiffness of the infill
15	El-Dakhakhni et al., 2003 [28]	Three	Modeling the frame-infill interaction as well as corner crushing failure mechanism
16	Dolšek and Fajfar, 2008 [29]	One	Modeling the force-displacement response of the infill by a tri-linear response, including post-peak response