May 5, 2022 at 12:02 pmDorSubscriber
Is the "free meshing" makes Isoparametric elements by default? If not, then what function does this?
ThanksMay 5, 2022 at 2:04 pmpeteroznewmanSubscriberUnder the Mesh Details, when you set Element Order to Linear, you will get Isoparametric elements.
May 5, 2022 at 8:18 pmDorSubscriber
Thank you peter You know what my project is.
I'm pretty sure that in my case, most of the elements are quadraticand not linear, so most of the elements are not isoparametric?
And one more quation:
I think my simulations are non-linear. In these non-linear problems the stiffness matrix is very dynamic, chanes. However I didn't entered to the engineering data anything about that (just the Young's modulus and similiar mechanical properties). So the software knows to change and to calculate the stiffness matrix by itself?
May 5, 2022 at 8:33 pmpeteroznewmanSubscriberIn your last model I saw, you left the Element Order Program Controlled, which means it go the quadratic elements. You can easily change to Linear and see what happens. Since your geometry is all curved, I think quadratic may be better, but maybe because you have a lot of contact, more smaller linear elements would be better. I don't know.
Yes, you have a nonlinear model because you have frictional contact.
Yes, the software creates the stiffness matrix for you automatically.
May 5, 2022 at 8:50 pmDorSubscriberSince your geometry is all curved, I think quadratic may be better
I'm trying to understend why. Because this way, the mid-side nodes enable the curved geometry while rolling?
By the way, I defined the environment to be with a certain pressure. When the film twists and changes, some areas of the film lift, roll and detach contact from the surface of the bowl. The software applies the pressure in these areas?
Thanks again Peter and sorry about my broken English
May 5, 2022 at 9:51 pmpeteroznewmanSubscriberThat figure is not correct for ANSYS. There is a midside node, but the edges that go through the three nodes are curved, not straight lines so they look more like the circular profile.
The pressure is applied to all the surface independent on whether the surface is making contact or not.
May 6, 2022 at 7:19 amMay 6, 2022 at 11:19 ampeteroznewmanSubscriberYour model is a 3-D SHELL because you have a section of an approximately spherical surface and you are assigning a thickness property to the shell elements, that thickness being very thin.
2-D SOLIDS have to be planar.
May 6, 2022 at 3:41 pmDorSubscriberThank you very much :)
Viewing 8 reply threads
Ansys Innovation Space
- The topic ‘Isoparametric elements’ is closed to new replies.
Boost Ansys Fluent Simulations with AWS
Computational Fluid Dynamics (CFD) helps engineers design products in which the flow of fluid components is a significant challenge. These different use cases often require large complex models to solve on a traditional workstation. Click here to join this event to learn how to leverage Ansys Fluids on the cloud, thanks to Ansys Gateway powered by AWS.
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
- How to do the frequency response of the nonlinear vibration of a flexible PCB?
- Importing Line and Solid Bodies from SpaceClaim to Mechanical
- how to open SendCommand in Ansys
- problems facing during solution
- Still facing the same issue
- Failed to move file from solver directory to scratch directory: file.rst
- Adaptive Sizing
- Stiffness factor
- Import DAT file
- Import pressure data (coordinates and value) to ansys workbench through excel
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.