X-shaped pipe damper (XPD) under cyclic loading Abaqus

Product Overview

In this example, we intend to simulate the X-shaped Pipe Damper (XPD) under cyclic loading in the Abaqus software.

The X-shaped Pipe Damper (XPD) is a metallic energy dissipation device that is investigated under cyclic loading to evaluate its hysteretic behavior and energy dissipation capacity.

The Abaqus model includes two layers of X-shaped pipe dampers, and the numerical analysis is used to investigate their cyclic response, deformation, and force–displacement hysteresis behavior.

The numerical results are compared with the experimental results reported in the reference study to evaluate how well the Abaqus model reproduces the main cyclic response and deformation behavior of the X-Shaped Pipe Damper.

In this project, the S133T5-F specimen is modeled in Abaqus based on the experimental test.

X-Shaped Pipe Damper

The X-Shaped Pipe Damper (XPD) consists of an X-shaped core formed by welding two oppositely positioned pipe halves. The core is connected to the side plates through welded connections.

Under cyclic loading, the damper initially develops resistance mainly through flexural bending of the pipe members. As the applied displacement increases, the pipe halves progressively straighten and the deformation shifts toward tensile stretching.

This change in deformation mechanism allows the XPD to develop increasing lateral resistance while dissipating energy through the inelastic deformation of its pipe members.

Cyclic Loading

The X-Shaped Pipe Damper is subjected to displacement-controlled cyclic loading in Abaqus to reproduce the experimental loading protocol.

The upper and lower plates are fixed, while the prescribed cyclic displacement is applied to the middle plate. The applied displacement is transferred to the X-shaped pipe dampers through the middle plate.

The loading history is defined using an amplitude curve to control the cyclic displacement throughout the analysis.

Force-Displacement Hysteresis Diagram

After applying the cyclic loading, the Force-Displacement hysteresis diagram is obtained from the Abaqus results.

The Force-Displacement hysteresis diagram obtained from Abaqus is compared with the experimental results reported in the reference study.

Deformation of the Damper

The deformation of the X-shaped Pipe Damper under cyclic loading can be observed in the following picture.

At relatively small displacements, the pipe members primarily undergo flexural deformation. As the applied displacement increases, the pipe halves progressively straighten and develop a more pronounced tensile deformation.

Energy Dissipation

The X-Shaped Pipe Damper dissipates energy through the inelastic deformation of its pipe members during cyclic loading.

The energy dissipated during each loading cycle can be evaluated from the area enclosed by the force–displacement hysteresis loop.

The Abaqus results can be used to investigate the energy dissipation behavior of the X-Shaped Pipe Damper under repeated loading and compare its response with the experimental results.

Validation

This project has been validated by comparing the numerical results obtained from the Abaqus software with the experimental results reported in the reference article.

The comparison of the force–displacement hysteresis response and deformation behavior provides a basis for evaluating the numerical model.

What You Will Learn

• How to model an X-shaped Pipe Damper (XPD) in Abaqus.
• How to define the geometry of the damper.
• How to define the material properties.
• How to assemble the components 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 damper.
• How to compare Abaqus results with experimental results.
• How to validate the numerical model using the reference article.

Key Features

• X-shaped Pipe Damper (XPD) modeling in Abaqus.
• Metallic damper analysis.
• Cyclic loading analysis.
• Force-Displacement hysteresis analysis.
• Deformation analysis under cyclic loading.
• 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, cyclic loading protocol, and reported results.