A comparative study between experimental and theoretical buckling load for hollow steel column (original) (raw)
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International Journal of Research in Engineering and Technology, 2017
Buckling of a column depends on the various geometrical parameters and material. Buckling strength mainly depends on the crushing strength, area of cross section length and the radius of gyration. For the mild steel hollow columns having length and outer diameter same and different wall thickness, buckling load for fix-fix end condition decreases as the radius of gyration increases. It has also been observed that with increment in slenderness ratio (l/k) the wall thickness and buckling load increases. Additionally, buckling load decreases as the ratio of inner to outer diameter increases.
Buckling performance of thin-walled filled steel columns
Turkish journal of engineering, 2023
Axial load Buckling Column FEA Concrete-filled composite elements have recently gained popularity as beams and columns all over the world. They have advantages similar to reinforced concrete elements, such as the moulding process and the lack of maintenance of the filled concrete, as well as advantages similar to hollow steel elements, such as enhancing compressive strength and bending capacity by using smaller sections. In this paper, the buckling behaviour of thin-walled steel columns with circular cross-section and different filling materials was investigated under uniaxial load. Six different materials (concrete produced using normal aggregate, concrete produced using waste aggregate, waste fine aggregate, waste coarse aggregate, waste iron dust and polyurethane) were used as filling. Filled columns were compared experimentally with hollow thin-walled steel columns that had the same height and diameter. All specimens had the same length (750 mm), same diameter (60.3mm) and the same wall thickness (3mm). Experimental results were compared with analytical results obtained from a calculation done using the national steel design code, Design, Calculation and Construction Principles of Steel Structures 2016. Additionally, columns specimens were modelled in Abaqus software. Conservative and consistent results were obtained from comparing experimental, analytical, and numerical results.
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.
Buckling Modes of Cold-Formed Steel Columns
International Journal of Engineering and Technology, 2013
The goals of this study are to understand different buckling modes, determine the buckling mode and maximum buckling capacity of the built-up C-channels, and evaluate the AISI-2001 Specification. For these goals, the following was conducted: 1) different buckling modes of cold-formed steel columns were investigated; 2) previous research on built-up columns and testing rigs for column buckling was reviewed; and 3) the authors' buckling test results of 42 cold-formed built-up columns were examined. The study and review help better understanding of the buckling modes and the effect of design or testing parameters on the buckling behavior. The results show inconsistencies in the calculated values by AISI-2001 as compared to the maximum capacity loads determined from the buckling tests. The orientation of the member substantially impacts the maximum load of the member.
General buckling analysis of steel built-up columns using finite element modelling
Engineering Structures and Technologies, 2012
The paper investigates the general buckling of an axially loaded column using the finite element method with different slenderness ratios of axes x-x and z-z. The paper deals with three different modes of buckling. The conducted numerical experiments have suggested correction factors and appropriate buckling modes of the built-up columns. The obtained modelling results were compared with data on analytical calculations made according to Lithuanian national codes STR and Eurocode 3. The FEM analysis of the builtup column has showed that both codes (STR and EC3) are giving safe enough results for a considered type of conditions for column support. Santrauka Straipsnyje nagrinėjami plieninių spragotųjų kolonų elgsenos ypatumai, atsižvelgiant į skirtingas STR 2.05.08:2005 ir EC3-1-1 metodikas. Didžiausią susidomėjimą kelia faktas, kad, taikant EC3 metodiką, nėra nagrinėjama spragotosios kolonos kluptis apie didesnio standumo x-x ašį (1 pav.). Naudojantis turima ir kitų autorių patirtimi...
Study on the Buckling Behaviour of Cold Formed Steel Lipped and Unlipped Column
International Journal for Research in Applied Science & Engineering Technology (IJRASET), 2022
In steel construction, cold-formed structural members are becoming more popular and have growing importance. Its growing popularity in building construction is due to its advantages over other construction materials such as lightness and consequent ease of erection and installation, the economy in transportation and handling. They are mostly used in the construction field as both primary and secondary structural members due to their advantageous features such as high strength to weight ratio, easy handling, fast construction, etc. Cold-formed steel is the common term for steel products shaped by cold working processes carried out near room temperature. The objective of this study is to examine the performance of CFS column subjected to loading. Numerical investigations are carried out by using finite element analysis software ANSYS. Using the ANSYS software the bucking behavior of CFS lipped and unlipped columns with different configurations are examined.
Recent research activities on column behaviour with special emphasis on distortional buckling
The behaviour and ultimate strength of thin-walled steel lipped C-section columns under concentric axial compressive loading are examined by using finite element analysis. ABAQUS (2009), a general purpose Finite Element (FE) Analysis program has been used for the purpose. Two types of analysis were carried out to study the column stability and strength. First, eigenvalue buckling analysis was carried out to obtain relevant buckling modes. Secondly, non-linear analysis was carried out using the mesh and imperfections suggested by the eigenvalue analysis. Riks method was used for the non-linear load-displacement analysis to handle possible instabilities that the member would suffer due to the presence of initial geometric and material imperfections. Three different column lengths were adopted and the above analyses were carried out on these columns with and without perforations and with varying degrees of initial geometric imperfections. Non-linear load-displacement curves are provided for these various cases and ultimate strengths achieved for the models are used to compare with available design approaches.
COMPASSION STUDY OF BUCKLING BETWEEN SOLID AND HOLLOW TAPERED COLUMN
IAEME, 2019
Buckling of slender columns, which aid compressive masses in structures. First, the essential axial load, which suggests the onset of buckling, is described and computed for a number of easy models composed of rigid bars and elastic springs. Solid, neutral, and volatile equilibrium conditions are described for these idealized inflexible systems. on this task, we are able to describe the simulation of the two fashions (strong) and (hole), in which they will be addressed to select special models in terms of the intensity of selected alloys and masses inflicted for you to look at the buckling under critical layout hundreds Ansys and using Autodesk software program Keywords: In this work has been studying the phenomenon of buckling Cite this Article
A simplified analysis and optimality on the steel column behavior with local buckling
Doboku Gakkai Ronbunshu, 1986
A simplified analysis is given for the interactive steel column behavior with local buckling. The analysis utilizes the explicit solution of the elastic beam-column of Perry-Robertson type, newly incorporating the effective width concept of component plates. The results are proved to predict the available tests well with engineering accuracy. Optimality is examined from the views not only of ultimate strength but also of energy absorption to benefit on the earthquake-resistant design. The results indicate that allowing the occurrence of local buckling may not give the advantage much for the design of steel columns in ordinary civil engineering structures.
Recent Trends in Civil Engineering and Built Environment, 2021
This paper focuses on a review of research studies of Cold-Formed Steel Columns (CFSC) with the aim to provide an overview of the current state of understanding and evaluation of existing findings. CFS members commonly has complex buckling behaviour and buckling mod with the slenderness being the main factor that affect the stability and buckling failure. The different buckling modes that occur in such columns are evaluated in the scope only for the close section type such as SHS, RHS and corrugated column with or without perforated. From the experiment works, compression test was conducted to determine the effect of a column reaction under compression load. The tests performed with various parameters such as the slenderness, thickness, temperature and holes in the column web. Based on the observation, the perforated RHS columns are generally failed due to local buckling. The holes provided in the column also influenced the buckling behavior. In general, short column tends to experience local buckling, while slender column tends to experience global buckling.