Seismic behavior of semi-supported steel shear wall Abaqus

Product Overview

In this project, a semi-supported steel shear wall is modeled in Abaqus and its seismic behavior is investigated under cyclic loading.

The numerical model is developed based on the configuration and information reported in the reference research paper.

The Abaqus results are compared with the experimental results to evaluate the accuracy of the numerical model and its ability to reproduce the structural response observed in the experimental study.

Model Description

The model represents a semi-supported steel shear wall based on the configuration of the experimental specimen described in the reference study.

The structural components are modeled according to the dimensions, material properties, and other information provided in the research paper.

The model includes the steel plate, main columns, auxiliary columns, secondary columns, beams, and stiffeners. The steel plate is connected to the surrounding beams and secondary columns.

The required material properties, interactions, boundary conditions, and analysis settings are defined in Abaqus to reproduce the behavior of the experimental specimen.

Experimental Specimen

The experimental specimen used in the reference study is shown in the following figure. The specimen represents a semi-supported steel shear wall system in which the shear wall is supported by secondary columns rather than being directly connected to the main gravity-load columns.

Beam and Column Connection

In this model, the beam and column are connected using hinges.This connection condition allows rotation between the structural members and reproduces the behavior of the experimental setup. The locations where the hinges are positioned are highlighted in the following figure.

Buckling Analysis and Initial Imperfection

A buckling analysis is performed to determine the buckling behavior of the steel shear wall.

The obtained buckling mode is then used to introduce an initial geometric imperfection into the numerical model.

This procedure helps the numerical model better represent the initial geometric condition of the experimental specimen.

Cyclic Loading

The semi-supported steel shear wall is subjected to cyclic loading according to the loading protocol used in the reference experimental study.

The loading history is defined using the Amplitude option in Abaqus.

The structure is then analyzed under repeated loading and unloading cycles to investigate its nonlinear seismic response.

Hysteresis Analysis

The numerical results obtained from the cyclic analysis are extracted to evaluate the structural response of the semi-supported steel shear wall.

The force and displacement data are processed to obtain the force–displacement hysteresis curve.

The numerical hysteresis response is compared with the experimental response reported in the reference paper.

Results

The Abaqus results are used to evaluate the deformation, load-carrying capacity, and nonlinear behavior of the semi-supported steel shear wall during the cyclic analysis.

As the lateral displacement increases, shear buckling of the steel plate develops, followed by the formation of a diagonal tension field in the post-buckling stage.

At larger displacement levels, the interaction between the steel plate and the surrounding frame becomes more pronounced, with significant deformation developing in the secondary columns.

An important feature of the semi-supported system is that the primary columns are separated from the main lateral load-resisting system. The lateral load is primarily resisted through the steel plate and secondary columns, allowing the primary columns to be protected from the main lateral deformation demands.

The numerical results are used to investigate the development of the wall mechanism and the deformation behavior of the structural components throughout the cyclic loading history.

Experimental Validation

The numerical model is validated against the experimental results reported in the reference research paper.

The comparison focuses on the structural response obtained from the cyclic loading analysis.

The comparison demonstrates the capability of the Abaqus model to reproduce the main characteristics of the experimental behavior.

Key Features

• Numerical simulation of a semi-supported steel shear wall.
• Buckling analysis.
• Initial geometric imperfection.
• Nonlinear cyclic analysis.
• Force–displacement hysteresis response.
• Comparison with experimental results.
• Experimental validation of the numerical model.
• Complete Abaqus model files.
• Excel files for loading and numerical results.
• Reference research paper.
• Step-by-step video tutorial.

What You Will Learn

• How to model a semi-supported steel shear wall in Abaqus.
• How to define the geometry and material properties of the model.
• How to define the required interactions and boundary conditions.
• How to perform a buckling analysis.
• How to extract buckling modes from Abaqus.
• How to define an initial geometric imperfection.
• How to define cyclic loading using the Amplitude option in Abaqus.
• How to perform nonlinear analysis under cyclic loading.
• How to obtain a force–displacement hysteresis curve.
• How to extract and process Abaqus results using Excel.
• How to compare numerical and 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, loading protocol, numerical model, and reported results.