The Effect of Web Taper Ratio on the Free Vibration Behavior of Steel Cantilever Channel Beams
The IUP Journal of Structural Engineering, Vol. X, No. 4, October 2017, pp. 19-29
Posted: 9 Aug 2018
Date Written: July 24, 2018
Abstract
Free vibration is an important field of study. Steel cantilever prismatic beams with channel cross-section can be replaced with cantilever tapered beams of channel crosssections for economy. The taper ratio may affect the behavior of the beam. In this paper, the effect of taper ratio on free vibration of steel cantilever channel beams is studied by finite element modeling and analysis with the help of ANSYS — a commercial software. SHELL 63 element is used for carrying out the analysis. Linear-elastic behavior of the material is considered. For validation of analysis, cases solved by previous researcher (I-beams) are reanalyzed. The natural frequency, displacement vector sum and rotation vector sum values corresponding to first six modes are presented for web taper ratios 0.5, 0.625, 0.75 and 0.875.
Keywords: Web taper ratio, Free vibration, Finite element analysis, Steel channel beams
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