COMPARISON BEHAVIOR OF FLEXURAL CAPACITY CASTELLATED BEAM OF HEXAGONAL OPENING WITH CIRCLE OPENING

To increase the flexural capacity of the WF profile, it can be done by modifying the geometry into a castellated beam. Castellated beam has several variations of opening shapes. The author in 2020 has obtained the results of the flexural behavior of hexagonal opening castellated beams, obtained the optimum flexural capacity at 450 hexagonal opening angle variations. In this study, the author want to obtain differences in flexural strength produced by hexagonal castellated beam openings with circle openings. ANSYS numerical testing was carried out to obtain the behavior of the castellated beam. The test model made is a castellated beam with circle openings with several variations of S/Do and D/Do parameters. From the results of numerical testing, it is found that the optimum castellated circle opening is S/Do=1.3; D/Do=1.4. With the value of Pyield = 57kN and Pultimate = 84kN. From the results of the castellated beam's flexural capacity, the circle opening is compared with the hexagonal bending capacity. Hexagonal openings get better results than circle openings. Castellated hexagonal apertures get Pyield=61.7kN and Pultimate=95kN. The deformation experienced by castellated circle openings has a value greater than that of hexagonal openings. This shows that the hexagonal opening has a more excellent inertial stiffness value than the circle opening. Because the circle opening has a larger opening area than the hexagonal opening, it causes a smaller inertial stiffness value.