May 3, 2023 at 6:49 pm
May 4, 2023 at 7:57 amNanda VerallaAnsys Employee
To answer your first error, it simply states that your system doesn't have enough memory for solving the model. Theoretically ANSYS needs about 15 GB RAM for solving 1 million DOF's.
- Reduce the model size, you can either change the element formulation to linear or make a coarsh mesh if possible.
- If that error persists, kindly free some space from your available memory.
- If you need to solve with your current mesh settings, and you can't free any space, you need to upgrade your hardware and increase available memory
Coming to your second error, the error message itself means that the PCG preconditioner matrix size overflowed. You can try to reduce the level-of-difficulty by using command PCGOPT or change it to the sparse solver. It does not suffer from preconditioner matrix size overflow.Theoretically Distributed ANSYS also helps because the preconditioner matrix will be split.
Guidelines for Posting on Ansys Learning Forum
How to access ANSYS help links
May 4, 2023 at 6:49 pmHasan İlker ÇELİKERSubscriber
Firstly, thank you. I am using 16GB of ram. I have space on my hard drive. There is more than 300 GB of space.
How do I use the command you said? I would appreciate it if you could explain a little more in detail. Thank you.
May 5, 2023 at 6:49 amNanda VerallaAnsys Employee
Can you check the mesh statistics in your model and see if number are nodes are falling inside the criteria I mentioned earlier, DOF can be calculated by number of nodes*3 for solid elements and nodes*6 for shells. Have you tried changing to linear element formualtion or making a coarse mesh. Your message tells you have around 14GB available memory, whereas this model requires about 25GB memory. You can switch solver type to iterative, this needs less memory to solve.
- 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
- An Unknown error occurred during solution. Check the Solver Output…..
- What is the difference between bonded contact region and fixed joint
- User manual
- 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
- material damping and modal analysis
- Colors and Mesh Display
© 2023 Copyright ANSYS, Inc. All rights reserved.