Product Overview
In this project, we simulate a perforated web H-type brace damper (PWHBD) consisting of two slit dampers and one H-type brace subjected to cyclic loading in Abaqus.
The slit dampers consist of perforated webs and flanges, and dissipate earthquake energy through the flexural yielding of the perforated web strips under in-plane shear.
The numerical model is developed based on the experimental study, and the behavior of the damper under cyclic loading is investigated.
The Abaqus results are compared with the experimental results to evaluate the ability of the numerical model to reproduce the load–displacement hysteretic response and deformation behavior of the damper.
Test Setup
The test setup used for the experimental study can be observed in the following picture.
In this project, the PWHBD-1 specimen is simulated in Abaqus based on the experimental test.
Cyclic Loading
In this problem, a cyclic loading is applied to the model, and following that, its hysteresis diagram is obtained.
The cyclic loading history is defined using the corresponding amplitude data in Abaqus.
Hysteresis Diagram
After applying the cyclic loading, the Force-Displacement hysteresis diagram is obtained from the Abaqus results.
The following picture shows the Force-Displacement hysteresis diagram obtained from Abaqus compared with the experimental results.
Deformation of the Model
The Abaqus results show that the deformation and plastic yielding are mainly concentrated in the perforated web strips of the PWHBD-1. These strips undergo significant plastic deformation during cyclic loading and act as the primary energy-dissipating components of the damper.
In contrast, the H-type brace remains largely elastic, with its strain staying well below the yield strain. This confirms that the main plastic deformation and energy dissipation occur in the perforated web strips rather than in the H-type brace.
Comparison of Deformation Results
In this picture, the deformation obtained from the Abaqus software is compared with the experimental results.
The comparison is used to evaluate the ability of the numerical model to reproduce the deformation behavior observed during the experimental test.
Mesh Size
The mesh used in the numerical model can be observed in the following picture.
It should be noted that fine meshes should be used for the slit dampers in order to accurately capture their deformation and hysteretic behavior.
Validation
This project has been validated, which means that the results obtained from the Abaqus software are similar to the results reported in the article.
In other words, this project is based on the reference article, and the numerical model has been developed to reproduce the experimental behavior of the brace-type damper under cyclic loading.
What You Will Learn
- How to model a brace-type damper in Abaqus.
- How to model two slit dampers and one brace.
- How to define the geometry and assembly of the model.
- How to define the boundary conditions.
- How to apply cyclic loading.
- How to define the cyclic loading amplitude.
- How to obtain the Force-Displacement hysteresis diagram.
- How to investigate the deformation of the model under cyclic loading.
- How to use an appropriate fine mesh for the slit dampers.
- How to compare the Abaqus results with experimental results.
- How to validate the numerical model using the reference article.
Key Features
- Brace-type damper modeling in Abaqus.
- Two slit dampers and one brace.
- Cyclic loading analysis.
- Force-Displacement hysteresis diagram.
- Deformation analysis under cyclic loading.
- Fine mesh for the slit dampers.
- Comparison between Abaqus and experimental results.
- Validation against the reference article.
- Complete Abaqus CAE file.
- Abaqus INP file.
- Excel amplitude loading file.
- Excel results file.
- Reference research paper.
- Step-by-step video tutorial.
Reference
This project is based on the reference research article. The paper is included with the project files and can be used to review the experimental model, loading protocol, and reported results.
Project Information
Important information about this project
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