August 18, 2023 at 10:20 amTim RudloffSubscriber
I've build up a larger assembly out of surface elements. The next picture shows how the assembly looks in general.
When I do a simulation on this I get no problems, but I receive a Warning and an Error, when I add the surface in the next picture.
"Solver pivot warnings have been issued during the solution. This is usually due to a poorly conditioned matrix due to inappropriate material properties, an underdefined model, or contact problems. Check your results carefully."
"The equation solver has determined a pivot warning or a pivot error for the degree of freedom UZ of node 18728 in ship section 2D-1@surface-plane16. The reason is usually a poorly conditioned matrix due to incorrect material data, insufficient storage, or problems with contacts. Check the results carefully. You can select the affected object by right-clicking the message."
The next picture shows how I connected the two surfaces.
I have already spent quite a bit of time on this, so I would be grateful to get a hint on how to fix this problem.
August 21, 2023 at 12:15 pmAshish KumarForum Moderator
Hi, can you create a named selection for node - 18728 and see which part is giving you the issue? A modal analysis will help as well to visualize the free part.
- You must be logged in to reply to this topic.
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.
- Solver Pivot Warning in Beam Element Model
- Saving & sharing of Working project files in .wbpz format
- Understanding Force Convergence Solution Output
- User manual
- An Unknown error occurred during solution. Check the Solver Output…..
- What is the difference between bonded contact region and fixed joint
- The solver engine was unable to converge on a solution for the nonlinear problem as constrained.
- whether have the difference between using contact and target bodies
- Defining rigid body and contact
- Colors and Mesh Display
© 2023 Copyright ANSYS, Inc. All rights reserved.