July 10, 2020 at 5:51 pmvalegSubscriber
Hello to everyone! I'm trying to understand a problem that I have with the use of the cyclic symmetry. I modeled a very simple geometry and a applied the cyclic symmetry. I obtained also a good mesh using tetrahedrons method, but when I solve the model it gives me the following message: "An error occurred inside the solver module the mesh is corrupted. This could be due to the presence of a mesh connection or the objects in a body with cyclic". I really can't understand what is wrong. Can you please help me? The pictures of all the settings I put are attached. Thank you!
P.S. The model run if I just eliminate the symmetry and also works with the symmetry region. Only with the cyclic symmetry it gives this problem.
July 11, 2020 at 2:46 pm
July 11, 2020 at 2:58 pmvalegSubscriber
Thank you for the answer, but I already tried different type of mesh and the problem remains. Moreover, I can't obtain a good mesh with the Sweep method and the other ones as well, except for the tetrahedrons one.
July 12, 2020 at 12:23 ampeteroznewmanSubscriber
Why do you need Cyclic Symmetry in the mesh? That is useful for CFD models. I don't see why you need it in a Structural model.
Don't you just have a pressure load on the inner face? In that case, simple Symmetry is sufficient.
You will have faster solve times and better results if you use a hex mesh from a sweep method. Why can't you obtain a good mesh with sweep?
July 12, 2020 at 11:46 amvalegSubscriber
With sweep method I have an error message from Ansys: "Mesher failed to mesh topological edges". Moreover I need cyclic symmetry in the model because I want to simulate in the end a quarter of a pipe subjected to an internal displacement or pressure. What do you mean for "simple symmetry"? In the symmetry module I have: Symmetry region, linear periodic and cyclic region. (I am new with Ansys software so every suggestions will be very appreciated!)
July 12, 2020 at 3:00 pmpeteroznewmanSubscriber
Use Symmetry region. No need to use cyclic region. This discussion has a similar problem.
Open the geometry in SpaceClaim, go through the tools on the Repair tab. You should end up with a body with exactly 6 faces, 12 edges and 8 vertices. When you have that, you can get a clean Swept mesh.
July 13, 2020 at 9:28 amvalegSubscriber
I did it. I have a geometry with exactly 6 faces, 12 edges and 8 vertices. The swept mesh works (in the previous model as well) without the cyclic symmetry. The symmetry region works, so it gives me a result, but it is not that I want. I guess that I can't model 1/4 of the pipe if I use the symmetry region, but I need 1/2, isn't it? Thank you for your time.
July 13, 2020 at 7:09 pmpeteroznewmanSubscriber
Did you look at the similar problem, that ended up only modeling a 30 degree slice of a pipe.
It is better to model 1/4 than 1/2 a pipe because the symmetry boundary conditions help to constrain the model.
July 15, 2020 at 12:51 pmvalegSubscriber
Thank you so much, I solved my doubts and the model works!
- You must be logged in to reply to this topic.
Simulation World 2022
Check out more than 70 different sessions now available on demand. Get inspired as you hear from visionary companies, leading researchers and educators from around the globe on a variety of topics from life-saving improvements in healthcare, to bold new realities of space travel. Take a leap of certainty and check out a session today here.
Earth Rescue – An Ansys Online Series
The climate crisis is here. But so is the human ingenuity to fight it. Earth Rescue reveals what visionary companies are doing today to engineer radical new ideas in the fight against climate change. Click here to watch the first episode.
Subscribe to the Ansys Blog to get great new content about the power of simulation delivered right to your email on a weekly basis. With content from Ansys experts, partners and customers you will learn about product development advances, thought leadership and trends and tips to better use Ansys tools. Sign up here.
- ANSYS Workbench Measuring within Design
- How to resolve Mesh Failure
- check element type
- The mesh file exporter could not resolve cyclic dependencies in overlapping contact regions error
- Meshing Error
- Error in meshing
- Conformal vs Non-Conformal Mesh
- Ansys 19.0 – will not create mesh
- Dealing with inflation layers around sharp corners in Ansys workbench meshing
- execution error inside the mesher. The process suffered an unhandled exception or ran out of memory
© 2022 Copyright ANSYS, Inc. All rights reserved.