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

Table 3

Different methods/models for frequency analysis.

Abbreviation	Description
T1	Steady state forced vibration test
T2	Ambient vibration test
N1	Numerical model, without infill panel + SSI
N2	Numerical model, without infill panel + rigid foundation
N3	Numerical model, with infill panel (compressive strut) + SSI
N4	Numerical model, with infill panel (compressive strut) + rigid foundation
N5	Numerical model, with infill panel (shell element) + SSI
N6	Numerical model, with infill panel (shell element) + rigid foundation
F1	Analytical formula, without infill panel + rigid foundation
F2	Analytical formula, without infill panel + SSI
F3	Analytical formula, with infill panel + rigid foundation
F4	Analytical formula, with infill panel + SSI
C1	Codified, based on INBC
C2	Codified, based on UBC
C3	Codified, based on ASCE