Numerical Modelling of Hexagonal Castellated Beam under Monotonic Loading

“…Presence of the hole (opening) makes castellated beam susceptible to buckle. Two of the several failure mechanism which are common are Vierendeel mechanism and local buckling [3]. Vierendeel mechanism is mechanism that cause yield or buckling of the webpost in compression or shear when the other criteria is local buckling which can be occur in three ways [4]:…”

Section: Castellated Beammentioning

confidence: 99%

Finite element modelling of composite castellated beam

et al. 2017

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Abstract. Nowadays, castellated beam becomes popular in building structural as beam members. This is due to several advantages of castellated beam such as increased depth without any additional mass, passing the underfloor service ducts without changing of story elevation. However, the presence of holes can develop various local effects such as local buckling, lateral torsional buckling caused by compression force at the flange section of the steel beam. Many studies have investigated the failure mechanism of castellated beam and one technique which can prevent the beam fall into local failure is the use of reinforced concrete slab as lateral support on castellated beam, so called composite castellated beam. Besides of preventing the local failure of castellated beam, the concrete slab can increase the plasticity moment of the composite castellated beam section which can deliver into increasing the ultimate load of the beam. The aim of this numerical studies of composite castellated beam on certain loading condition (monotonic quasi-static loading). ABAQUS was used for finite element modelling purpose and compared with the experimental test for checking the reliability of the model. The result shows that the ultimate load of the composite castellated beam reached 6.24 times than the ultimate load of the solid I beam and 1.2 times compared the composite beam.

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“…The openings in the web cause the castellated beam to be weak against shear [3]. In addition, the failure of the castellated beam can be caused by IOP Publishing doi:10.1088/1755-1315/1173/1/012012 2 several things, including the special geometric shape, slenderness of the web plate, geometry and size of the opening, the type of loading given and the provision of lateral support [4].…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of Castellated Beam with Stiffener – Case on Cantilever Structure

Haris

Sari

Masrilayanti

2023

IOP Conf. Ser.: Earth Environ. Sci.

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A castellated beam is designed to increase the depth of the beam by slicing the beam web longitudinally in a specified form and re-unite both pieces using welding to obtain a higher flexural capacity of the beam. Due to the increase in cross-sectional height and the presence of openings in the web plate, some potential failures may occur, for example buckling of the web and stress concentration on the opening. Addition of stiffener on the web is useful to prevent those potential failures. This paper presented a numerical study of castellated beam with additional stiffeners which is applied on a cantilever structure using MSC Nastran software. The castellated beam was added by stiffeners placed on three different zones. There were stiffeners on the perimeter of opening, on the web between openings, and on the web of opening. The cantilever beam was subjected by a point load increased monotonically until ultimate condition reached. It was found that applying of the stiffeners on perimeter of opening will increase ultimate load up to 7.48 % comparing to the original castellated beam. On contrary, stiffeners on the web between openings and the web of opening will decrease the ultimate load within the range of 0.40% - 4.86 %. The beam stiffness will slightly increase because of these three types of additional stiffeners. Regarding ductility of the beams, adding of stiffeners on the castellated beam showed vary numbers. Overall, the stiffeners on perimeter of opening become an alternative to increase the performance of the castellated beam in term of the ultimate load, beam stiffness and ductility.

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Numerical Modelling of Hexagonal Castellated Beam under Monotonic Loading

Cited by 18 publications

References 2 publications

Load carrying capacity of castellated I-beam in the elastoplastic formulation problem

Load carrying capacity of castellated I-beam in the elastoplastic formulation problem

Finite element modelling of composite castellated beam

Numerical Study of Castellated Beam with Stiffener – Case on Cantilever Structure

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