Learning Forum

[Mateusz Sandrzyk]

Hello everyone!

I am currently working on a project related to the application of the finite element method for modeling a snowboard binding with Skate-Tech technology. As part of this project, I have created an initial model in CAD software (Inventor), which can be seen below.

However, I have received feedback from my supervisor that the first computational model should be significantly simpler. He suggested that it would be worthwhile to simplify the shape as much as possible and preferably utilize shell or even beam elements right from the start. He also suggested that I should truly aim to capture the physical phenomenon/technology using the simplest possible model, where the results could even be determined "on paper."

The red element is a post, which can rotate slightly depending which side we shift the force. Green elements are used to dampen vibrations.

I would like to ask if anyone has any suggestions on how to simplify this computational model? Has anyone had similar experiences with modeling snowboard bindings or applying the finite element method in other projects?

I would greatly appreciate any suggestions, tips, or information on this topic (I am a beginner when it comes to FEM). Thank you in advance for your help!

[Saurabh Patil]

 

Hi Mateusz, 

Looking at the model, you can solve the model using 2D elements by extracting the midsurface of the 3D parts and the pins can be modelled using 1D elements. For a preliminary analysis you can stick with the use of linear materials and linear contact definition (bonded).

You may find these Ansys Innovation Courses helpful to learn more about modelling in Ansys Mechanical.

https://courses.ansys.com/index.php/courses/geometry-representation-using-ansys-mechanical/

https://courses.ansys.com/index.php/courses/connecting-parts-together/

 

Hope you find this helpful.

 

Regards

Saurabh

 

[Mateusz Sandrzyk]

Hi Saurabh Patil.

Thank you for your response. I watched these courses and now have a brief understanding of how should I model the binding. But I have step upon a next problem. Out of nowhere, when I try to open Spaceclaim or DesignModeler an error seen below poops up. I searched for a solution, but none seems to be working. I tried deleting all the files and installing Ansys once again, but that doesn't seem to work.

I appreciate any help related to that error.

[Saurabh Patil]

Hi Mateusz

Can you try using these troubleshooting methods. 

Discovery License Activation Troubleshooting - Ansys Knowledge

Let me know if this helps out. 

 

Regards

Saurabh

[Mateusz Sandrzyk]

Hi Saurabh,

Thank you for the response. I contacted with my university IT department and we managed to fix the problem :) Regarding the model, I managed to make it using midsurface function as you have mentioned before. I also thought that for the very first model, an assumption can be made that the base and surface of the board are perfectly rigid. In that case, a joint (joint/remote support/cylindrical support anchored on the edge of the hole) should be placed in the model instead of a pin. In the subsequent model, the base of the connection can be introduced as compliant (also modeled as a shell or as a frame with beams).

What do you think about this idea? Thank you for the help!

 

Regards,

Mateusz