Abstract
In the current study, the influence of notch or opening parameters and the positions of the applied load on the structural performance of steel box beams up to failure was investigated using Finite Element analysis program, ANSYS. The Taguchi-based design of experiments technique was used to plan the current study. The plan included 12 box steel beams; three intact beams, and nine damaged beams (with opening) in the beams web. The numerical studies were conducted under varying the spacing between the two concentrated point loads (location of applied loads), the notch (opening) position, and the ratio between depth and width of the notch with a constant notch area. According to Taguchi analysis, factor X (location of the applied loads) was found the highest contributing parameters for the variation of the ultimate load, vertical deformation, shear stresses, and the compressive normal stresses.
Highlights
Design errors, corrosion, lack of proper maintenance, substandard materials, fatigue damage and vehicle-caused accidental damage are considered as the major problems in the steel structures (Kim and Yoon 2010)
The performance of studied steel beams as obtained from the numerical model; peak load, normal stresses and strain, shear stresses and the maximum vertical displacement at the ultimate loads according to Modulus of elasticity (Gpa) 200
The results of the three intact beams; CB1, CB2 and CB3 in terms of the deformed shape, strain distribution, normal and shear stress distributions at the maximum loads are presented in Figs. 4, 5 and 6
Summary
Corrosion, lack of proper maintenance, substandard materials, fatigue damage and vehicle-caused accidental damage are considered as the major problems in the steel structures (Kim and Yoon 2010). Twelve box steel beams were studied using FE analysis program, ANSYS to investigate their structural performance up to failure in terms of the maximum load and its corresponding deflection, the shear and normal stresses and the strain.
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