Numerical simulation and specification provisions for buckling characteristics of a built-up steel column section subjected to axial loading

2020 ◽  
Vol 207 ◽  
pp. 110256 ◽  
Author(s):  
M. Muthuraman ◽  
R. Anuradha ◽  
P.O. Awoyera ◽  
R. Gobinath
Keyword(s):  
Numerical Simulation ◽  
Axial Loading ◽  
Column Section ◽  
Steel Column

Study the Behavior of Castellated Steel Column Encasing by Different Reactive Powder Concrete Thickness with Laced Reinforcement

2021 ◽  
Vol 895 ◽  
pp. 97-109
Author(s):  
Mustafa Mazin Ghazi ◽  
Ahmad Jabbar Hussain Alshimmeri
Keyword(s):  
Axial Load ◽  
Local Buckling ◽  
Axial Loading ◽  
Longitudinal Axis ◽  
Load Test ◽  
Reactive Powder Concrete ◽  
Control Group ◽  
Load Carrying ◽  
Steel Column ◽  
Reactive Powder

Castellated columns are structural members that are created by breaking a rolled column along the center-line by flame after that rejoining the equivalent halves by welding such that for better structural strength against axial loading, the total column depth is increased by around 50 percent. The implementation of these institutional members will also contribute to significant economies of material value. The main objectives of this study are to study the enhancement of the load-carrying capacity of castellated columns with encasement of the columns by Reactive Powder Concrete (RPC) and lacing reinforcement, and serviceability of the confined castellated columns. The Castellated columns with RPC and Lacing Reinforcement improve compactness and local buckling (web and flange local buckling), as a result of steel section encasement. This study presents axial load test results for four specimens Castellated columns section encasement by Reactive powder concrete (RPC) with laced reinforcement. The encasement consists of, flanges unstiffened element height was filled with RPC for each side and laced reinforced which are used inclined continuous reinforcement of two layers on each side o0f the web of the castellated column. The inclination angle of lacing reinforcement concerning the longitudinal axis is 45o. Four specimens with four different configurations will be prepared and tested under axial load at columns. The first group was the control group (CSC1) Unconfined castellated steel column, the second group was consists of Castellated columns (web and flange) confined with 17mm of (RPC), welded web, and 6mm laced reinforcement (CSC3). While group three (CSC4) consists of a Castellated steel column same as the sample (CSC3), but without using welding between two parts of the castellated steel column. Groups four and five consist of a Castellated steel column same as sample (CSC4) encased partially with reactive powder concrete (25.5 mm) (CSC5) and full encased flange with reactive powder concrete (34mm) mm (CSC6), respectively. The tested specimens' results show that an increase in the strength of the column competitive with increasing the encased reactive powder concrete thickness. And the best sample was sample CSC6 with (34mm) mm in experimental and ABAQUS results.

Dented Externally-Pressurised Pipes Subjected to Cyclic Axial Loading

2019 ◽  
Author(s):  
Konstantinos Chatziioannou ◽  
Yuner Huang ◽  
Spyros A. Karamanos
Keyword(s):  
Numerical Simulation ◽  
Stainless Steel ◽  
Cyclic Loading ◽  
Large Scale ◽  
Mechanical Response ◽  
Axial Loading ◽  
External Pressure ◽  
Nonlinear Material ◽  
Steel Pipes ◽  
Cycles To Failure

Abstract The present paper describes a numerical investigation of the mechanical response of externally-pressurized dented stainless-steel pipes, subjected to reverse cyclic axial loading. This is the first part of a large-scale project, between The University of Edinburgh and Tianjin University, and is motivated by the mechanical response of offshore pipelines, which are often subjected to cyclic loading during installation or operation. Under those cyclic loading conditions, the pipe may collapse because of accumulation of plastic deformations at the dent area. The paper describes a numerical simulation of the above physical problem, in an attempt to support experiments on 50mm-diameter stainless steel pipes, which are being performed at the laboratory facilities of Tianjin University. Pipe segments are subjected to reverse cyclic axial loading (tension and compression), in the presence of external pressure. Prior to the application of external pressure and axial load, the pipes are locally dented, in the form of “smooth dent” or “local ovalization”, so that collapse initiates at the dent area. The numerical simulation is aimed at examining some aspects of pipeline behavior to support and complement the experimental observations. The simulation is conducted using rigorous finite element tools, which account for large displacement and nonlinear material. Towards this purpose, an advanced material model is employed, capable of describing the phenomenological aspects of material response under cyclic loading, such as the accumulation of plastic strain and ratcheting. In the first part of the analysis, the local ovalization (denting) process is simulated. Subsequently, the pipes are subjected to uniform constant external pressure and, keeping the pressure level constant, monotonic or cyclic axial loading is applied until collapse. The numerical results are aimed at identifying the interrelation between the magnitude of the applied loading and the number of loading cycles to failure. The results are presented in diagrams of axial displacement, ovalization and local strain versus the corresponding number of cycles to failure, for specific levels of external pressure.

scholarly journals A comparison of experimental compressive axial loading testing with a numerical simulation of topologically optimized cervical implants made by selective laser melting

2020 ◽  
Vol 322 ◽  
pp. 33-42
Author(s):  
Marek Schnitzer ◽  
Radovan Hudák ◽  
Peter Sedlačko ◽  
Viktória Rajťúková ◽  
Alena Findrik Balogová ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Selective Laser Melting ◽  
Axial Loading ◽  
Laser Melting

Hybrid double skin FRP – Steel column with rubberised concrete infill under axial loading

2021 ◽  
Vol 249 ◽  
pp. 113267
Author(s):  
Shovona Khusru ◽  
David P. Thambiratnam ◽  
Mohamed Elchalakani ◽  
Sabrina Fawzia
Keyword(s):  
Axial Loading ◽  
Steel Column ◽  
Double Skin

Numerical simulation of thin-walled metallic circular frusta subjected to axial loading

2005 ◽  
Vol 10 (5) ◽  
pp. 505-513 ◽  
Author(s):  
A G Mamalis ◽  
D E Manolakos ◽  
M B Ioannidis ◽  
P K Kostazos
Keyword(s):  
Numerical Simulation ◽  
Axial Loading ◽  
Thin Walled
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