Product Overview
In this project, the beam-to-exterior column joint with a double extended end-plate is modeled in Abaqus and its structural behavior under monotonic loading is investigated.
The numerical model represents the experimental specimen S30408-ES-r, which is made of EN 1.4301 (S30408) austenitic stainless steel. The beam is connected to the exterior column through a bolted double extended end-plate, with rib stiffeners provided to reinforce the end-plate.
Model Description
The model represents a beam-to-column connection with an end plate and bolted connection.
The Abaqus model includes the main components of the experimental connection, including the beam, column, end-plate, continuity plates, rib stiffeners, and eight bolts.
Connection Details
The beam is connected to the double extended end-plate by welding, while the end-plate is connected to the column flange using eight M20 bolts.
The end-plate is reinforced with rib stiffeners, which are welded to the beam and end-plate according to the configuration of the experimental specimen. Continuity plates are also provided inside the column in the panel zone.
Bolt Pretension and axial Loading
The analysis is performed in two main steps. In the first step, the pretension force (Bolt Load) is applied to the bolts.
For specimen S30408-ES-r, the pretension force applied to each bolt is 124 kN. This pretension produces a clamping force between the end-plate and the column flange.
The bolt pretension generates tensile force in the bolts and a corresponding compressive clamping force between the end plate and the column flange.
An axial force of 290 kN is also applied to the column in the first step and maintained during the subsequent loading.
Monotonic Loading
In the second step, a monotonic load is applied to the end of the beam.
The connection is then analyzed under increasing monotonic loading to investigate its nonlinear structural response.
Force–Displacement Response
The Abaqus results are extracted and processed to obtain the force–displacement diagram of the connection.
The numerical force–displacement response is then compared with the experimental results reported in the reference research paper.
Deformation of the Model
The bending deformation of the end-plate and column flange is investigated as the monotonic load increases.
The Abaqus results show the deformation of these components as the connection is subjected to increasing load. The numerical deformation behavior can also be compared with the deformation observed in the experimental specimen S30408-ES-r.
Experimental Validation
The numerical results obtained from Abaqus are compared with the experimental results reported in the reference research paper.
The comparison focuses on the force–displacement response and the overall structural behavior of the connection under monotonic loading.
The numerical results show good agreement with the experimental results, demonstrating that the Abaqus model can reproduce the behavior of the experimental specimen.
Buckling of the Rib Stiffener
The rib stiffeners undergo buckling as the monotonic loading increases. The buckling behavior of the rib stiffeners is investigated in the Abaqus model and compared with the behavior observed in the experimental specimen S30408-ES-r.
The buckling of the rib stiffener obtained from the Abaqus analysis is compared with the behavior observed in the experimental specimen.
Key Features
- Beam-to-column connection using an end plate and bolts.
- Eight-bolt end-plate connection.
- Welded beam-to-end-plate connection.
- Rib stiffener and continuity plate modeling.
- Bolt pretension using the Bolt Load option.
- Axial loading of the column.
- Nonlinear monotonic analysis.
- Force–displacement response.
- Investigation of rib stiffener buckling.
- Comparison with experimental results.
- Complete Abaqus model files.
- Excel file containing numerical results.
- Reference research paper.
- Step-by-step video tutorial.
What You Will Learn
- How to model a beam-to-column connection using an end plate and bolts in Abaqus.
- How to model the beam, column, end plate, continuity plate, bolts, and rib stiffener.
- How to define the welded connection between the beam and end plate.
- How to define the bolted connection between the end plate and column.
- How to define bolt pretension using the Bolt Load option.
- How to apply axial force to the column.
- How to define monotonic loading in Abaqus.
- How to perform nonlinear analysis under monotonic loading.
- How to obtain a force–displacement diagram.
- How to investigate deformation and buckling of the rib stiffener.
- How to extract and process Abaqus results using Excel.
- How to compare numerical and experimental results.
- How to validate an Abaqus model using experimental results.
Reference
This project is based on the experimental study provided in the reference research paper. The paper is included with the project files and can be used to review the experimental setup, connection details, loading procedure, and reported results.
Project Information
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