Experimental investigation on buckling analysis of castellated column with software (original) (raw)
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IRJET- Geometrical Optimization and Buckling Analysis of Castellated Steel Column
IRJET, 2020
This paper presents design and study of the buckling behavior of castellated columns members and the critical load capacity of the section at various end conditions. Different shapes of the openings are taken into account for creation of castellated column. In this paper, the critical load capacity of the section at various end conditions also studied. Linear buckling analysis has done using ANSYS Workbench for different parameters of castellated column. Hexagonal openings were provided as opening on the web post of the column. Unit load is applied at free end. Total deformation and equivalent stress was obtained at nodes, with eigenvalues buckling load multiplier were obtained. From analysis critical buckling load was obtained as 147.72 KN. This load is greater than calculated critical load 122.90 KN. On applying this load to the system, equivalent stress is obtained as 26.336 MPa.
Design of Castellated Column in Finite Element Analysis
International Journal for Research in Applied Science & Engineering Technology (IJRASET), 2023
Castellated columns have been utilised extensively in steel constructions and structures. When compared to conventional I-section structural components, castellated structural components have a greater capacity for bending along their primary axes and can withstand greater flexural buckling. With the aid of FE analysis, the study sought to examine the strength and buckle behaviour of axially loaded tapered castellated cruciform steel columns. Although there is a sizable amount of study on the failure of various columns, no suitable standard has been developed to recognize the point of buckling in the equilibrium path of a deficient column. The analysis discussed in this manuscript takes into description a multiplicity of useful geometric dimensions and fix to fix ends conditions by the application of ABAQUS softwares
Experimental And Numerical Investigation Of The Behavior Of Castellated Steel Beam-Columns
International Journal of Scientific & Technology Research, 2021
Experimental investigation has been performed on twelve short and long castellated beam-column elements. The castellation process effectively increases the section resistance because of increasing the depth of the section without any additional weight. By increasing the depth of the beam, major axis bending resistance and stiffness are improved as the major axis moment of inertia (Ix) and the section modulus (Sx) are increased. It has been noticed that, researches that considered castellated elements subjected to axial and bending moment are limited compared to those considered elements subjected to bending moment only. In this research castellated beam-columns are studied under different load eccentricity to investigate the effect of castellation on beam-column strength. Behavior and strength of castellated beam-column are also investigated using the finite element analysis utilizing ANSYS software. The finite element results are found to be in a good agreement with their experimental counterparts.
IJERT-Structural Investigation on Buckling Behaviour of Double Web Tapered Steel Columns
International Journal of Engineering Research and Technology (IJERT), 2020
https://www.ijert.org/structural-investigation-on-buckling-behaviour-of-double-web-tapered-steel-columns https://www.ijert.org/research/structural-investigation-on-buckling-behaviour-of-double-web-tapered-steel-columns-IJERTV9IS060990.pdf This paper deals with the Buckling Behavior of double web tapered steel columns. Two shapes are provided (ie, L shape and V shape) in I section. All the column sections are of constant weight. The column is axially loaded. This paper is done in order to find the column of best taper ratio with maximum load carrying capacity. Hollow flange double web tapered steel column is analysed using best taper ratio.The buckling behavior is studied by developing finite element model using the ANSYS 16.1
International Journal for Research in Applied Science and Engineering Technology IJRASET, 2020
Buckling analysis is particularly important for steel structures because they are slender sections. Buckling occurs suddenly and cause system to collapse. Now a days tapered structural members are used for the stability purpose. Non-prismatic members are popular for civil engineering structures and certain benefits in terms of efficiency in material consumption and better steel utilization can be achieved by using tapered members. This study deals with the axial load performance of web tapered I-section steel column. The column is axially loaded by keeping overall weight of the column constant. The study focused on analysis of non-prismatic column with different taper ratio and the best model was fixed. Two different shape such as L-shape and V-shape were used for taper ratio study. The effect of using different hollow flange shapes such as rectangular, trapezoidal, and tubular on tapered steel column were also studied. A non-linear finite element model using ANSYS 16.1 has been adopted to investigate axial load behaviour of tapered column section. The result was analysed to determine buckling behaviour of tapered column section.
Behavior of Castellated Steel Beams: State of the Art Review
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The state of the art of behaviour of Steel Castellated Beams is explain in this paper. The present research status of behavior of castellated beams is not mature and need much through study compared to beams without openings in the web. The existence of various shapes of openings such as circular, hexagonal, rectan-gular, octagonal and oval etc. in beams web add some additional failure modes namely; lateral-torsional buck-ling of web posts, web post buckling due to shear force, formation of four plastic hinges around the corners of openings, rupture of welded of joints in the castellated beams over a conventional steel beams. A review of experimental and analytical work carried out on castellated steel beams has been presented. The paper also focuses on the influence of various parameters such as types of openings, size of openings, spacing of the openings, aspect ratio, various numbers of openings and strengthening on the behavior of steel beams with web openings
Castellated and common cruciform steel columns under axial and lateral cyclic loading
Asian Journal of Civil Engineering, 2018
A numerical study has been done on the strength and hysteresis behavior of castellated and common cruciform steel columns under axial and lateral cyclic loading. The main feature of the castellation method is to make the I-sections stiffer by increasing the web height and reaching the higher moment capacity from the initial axis of the same weight of plain webbed members, and optimizing the use of heavy and costly constructional steel material and providing access to appropriate services. The effect of types of steel sections, web and flange boost of steel section, and length variations of specimens have been investigated and deformation, bearing capacity, hysteresis loops, ductility, and energy dissipation capacities have been discussed. Finite element analysis is performed based on initial geometric imperfection and geometric nonlinearity. The results of finite element analyses are close to the experimental results and showed that load carrying capacity of castellated cruciform st...
Influence of Opening Type in Axially Compressed Castellated Columns
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Recently, castellated columns have been increasingly used in buildings because of their flexibility, easy compatibility and potential savings due to less steel consumption. However, there is a lack of research related to the subject. In view of that, this work evaluates the influence of the opening type and size on the resistant capacity of the column, considering a nonlinear plastic analysis by the finite element method (792 simulations). For this, columns without openings were modeled to validate the methodology proposed. After validation, a nonlinear buckling analysis of castellated columns was performed. In this study, different cut patterns of the beam web are evaluated, as well as residual stresses, material and geometric imperfections, based on a statistical design. The loads obtained by castellated columns and columns without web are compared. Also, the resistance reduction factors associated with global buckling (χ) for castellated profiles are compared to the values propos...
A comparative study between experimental and theoretical buckling load for hollow steel column
International Journal of Engineering, Science and Technology, 2018
Hollow mild steel columns of same outer diameter and length but different wall thickness show the buckling behavior in different manner in the fix-fix end condition. The behavior of the column is in good agreement with Rankine’s formula. Additionally, there is a very strong relation between actual buckling load and buckling load by Rankine’s formula. There is some difference between the theoretical and actual buckling load which may be due to geometrical defect, crack generation, chemical composition and formation of eccentricity. Columns show that the variation of differences between actual and theoretical buckling load with respect to wall thickness is parabolic in nature.Keywords: Hollow column, buckling load, compaction behavior, chemical composition, wall thickness