March 7, 2022 at 10:22 pmfrancescocurzioSubscriber
Hi everyone! Im trying to model a batterycell. Every layer of the battery has been modelled with shell elements. All the parts in the model are extremely thin (0.02 mm separator, 0.035 mm active material, metal collector 0.01 mm ecc.) I have used the mat model 181 (simplified rubber/foam) to model the behaviour of separators and active material. Furthermore, i used the AUTOMATIC_SINGLE_CONTACT, ERODE_SURFACE_TO_SURFACE_CONTACT and SURFACE_TO_SURFACE_CONTACT to link the parts of the model with SOFT=2.
When i run the simulation ive got the error "termination due to out of range forces/moments" and i dont know how to find a solution to this. I tried:
Reducing time step scale factor TSSFAC to 0.5
Set BULK VISCOSITY type to -2
Used shell section ELFORM -16 with HOURGLASS 8
Set CONTROL_ACCURACY INN=2
Im starting to think that there are two possible reasons:
Problem with the data inserted for the material model 181 simplified rubber/foam
Problem with the extremely reduced thickness of the parts. Moreover, i also had to reduce the contact thickness of the parts to avoid initial penetration.
What do you think of the problem? i leave a copy of the .k file here and if it needs i can also upload pictures of the model and of the settings.
Thank you in advance and greetings from italy!
P.S. I used a coarsh mesh because this model only serve to check if the material, contact ecc. cards works well, and then ill have to pass to the complete model with a finer meshMarch 10, 2022 at 8:12 amAshish KhemkaAnsys Employee
Please see if the following link of help to you:
Do you have tips how to to combat instabilities? ÔÇö Welcome to the LS-DYNA support site
Regards Ashish Khemka
Viewing 1 reply thread
Ansys Innovation Space
- You must be logged in to reply to this topic.
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.Trending discussions
- ANSYS Workbench Measuring within Design
- how to improve the inflation quality at sharp corners?
- check element type
- The mesh file exporter could not resolve cyclic dependencies in overlapping contact regions error
- How to resolve Mesh Failure
- Meshing Error
- Error in meshing
- Conformal vs Non-Conformal Mesh
- execution error inside the mesher. The process suffered an unhandled exception or ran out of memory
- inflation created stairstep mesh at some location
Top Rated Tags
© 2023 Copyright ANSYS, Inc. All rights reserved.Ansys does not support the usage of unauthorized Ansys software. Please visit www.ansys.com to obtain an official distribution.