Post-buckling behaviour of steel bracing in ANSYS workbench

In summary, the Remennikov-Walpole analytical model for post-buckling behavior of a steel frame with steel cross bracing can be accurately modeled in ANSYS Workbench by using a nonlinear material model and analyzing the displacement versus force curves.
  • #1
Sukhi
3
0
Hi,

I am trying to use ANSYS workbench to model a steel frame with steel cross bracing (HSS 32*32*3). The post-buckling behaviour should be similar to the Remennikov-Walpole analytical model (1997) where in a rigidly fixed ended brace three plastic hinges will form in buckling. The expected shape of hysteresis curve is attached herewith.

How can this be modeled in ANSYS?

Thank you very much
 

Attachments

  • Expected hysteresis for brace.PNG
    Expected hysteresis for brace.PNG
    34.4 KB · Views: 745
Engineering news on Phys.org
  • #2
.ANSYS Workbench can be used to model the steel frame with steel cross bracing (HSS 32*32*3) by adding a nonlinear material model to the frame and then applying the correct boundary conditions. The Remennikov-Walpole analytical model is a classical buckling solution for a rigidly fixed ended brace and can be implemented in ANSYS Workbench by using the nonlinear material model. The hysteresis curve can be determined by running nonlinear static analyses and plotting the displacement versus force curves. Additionally, the effects of different loading configurations, such as axial load, shear load, and moment, can be studied by modeling the appropriate boundary conditions.
 

1. What is post-buckling behaviour in ANSYS Workbench?

Post-buckling behaviour refers to the response of a structure after it has already buckled under a certain load. In ANSYS Workbench, this behaviour can be analyzed using advanced simulation tools to predict the structural response and stability of steel bracing components.

2. How does ANSYS Workbench simulate post-buckling behaviour?

ANSYS Workbench uses a combination of finite element analysis (FEA) and nonlinear analysis techniques to simulate post-buckling behaviour. This involves breaking down the structure into smaller elements, applying loads and constraints, and solving the equations of motion to predict the behaviour of the structure.

3. Why is it important to analyze post-buckling behaviour in steel bracing?

Post-buckling behaviour can significantly affect the structural stability and performance of steel bracing components. By analyzing this behaviour, engineers can identify potential failure points, optimize design parameters, and ensure the overall safety and reliability of the structure.

4. What are some common challenges in simulating post-buckling behaviour in ANSYS Workbench?

Some common challenges in simulating post-buckling behaviour include accurately modeling material properties, defining appropriate boundary conditions, and selecting suitable analysis methods. In addition, interpreting and validating the results can also be challenging and require expertise in structural mechanics.

5. How can ANSYS Workbench help in improving the post-buckling behaviour of steel bracing?

ANSYS Workbench provides engineers with a comprehensive set of tools and features to analyze and optimize the post-buckling behaviour of steel bracing. This includes advanced simulation capabilities, customizable design parameters, and the ability to perform parametric studies to evaluate different scenarios and improve overall performance.

Hot Threads

Recent Insights

Back
Top