Below is the archive file of my model.
Please suggest the solution for the problem.
Here is the ERROR I get on a big workstation.
Number of equations was about 7.3 million.
*** ERROR *** CP = 739.492 TIME= 08:11 There is not enough memory for the Distributed Sparse Matrix Solver to proceed using the out-of-core memory mode. The total memory required by all processes = 336902 MB. The total physical memory that is available on the system = 176879 MB. Please decrease the model size, or run this model on another system with more physical memory.
Looking at your model, you have too many elements, use a larger element size.
You also have multiple contacts on the same surfaces. Delete all but the necessary ones.
If I double the size of all mesh controls, it will solve on my workstation.
DISTRIBUTED SPARSE MATRIX DIRECT SOLVER. Number of equations = 1201042, Maximum wavefront = 552 Total memory allocated for solver = 90260.131 MB Total memory required for in-core solution = 82303.980 MB Total memory required for out-of-core solution = 29984.555 MB The Distributed Sparse Matrix Solver is currently running in the in-core memory mode. This memory mode uses the most amount of memory in order to avoid using the hard drive as much as possible, which most often results in the fastest solution time. This mode is recommended if enough physical memory is present to accommodate all of the solver data.
How much memory is installed in your computer?
Thanks for looking at my model.
The installed memory is 24 GB.
If possible, could you please remove the unnecessary contacts from my model and upload it again. If not, suggest those unnecessary contact to be removed.
The version I edited will not run on your computer because it requires 30 GB of free memory and you have only 20 GB of free memory. You have to increase the element size even more.
Most of the contacts labeled Contact were automatically generated and should be deleted. Look at each contact and see what surfaces light up and just keep the ones that are correct.
Pteroznewman could you please, since I had to log in with my new email, because otherwise I am not able to log in even if I try to change my password, it says that I do not know the password, so I have now new email, but I am not able to find out all these ideas you have made for me with the oil that you were helping a month ago and before, so it looks a bit crazy, so do you know how to find your comments? Thanks for you ideas...Jiri
The main problem for me is to long in with my original email and it was [email protected], but it does not want to accept my password, but I know absolutely well the password! Thanks for your ideas, I just do not know how to log in by this email....
Jiri, sorry for your troubles. Open a browser and go to Google.com in the search bar type this:
site:studentcommunity.ansys.com Georgiro1 posted
it will return a link to every post you have made.
I have made changes suggested by you regarding the contact and element size but still, I am getting some error. Please help me out.
Below is the link for the archive file of my model.
Peter, thanks a lot, of course I do not know who shall I tell him the issue not to be able to log in?
Peter, yes, I found it, this was the best. Thanks a lot!
I don't know why the solver is trying to run incore on a 24 GB memory machine when it calculated it needs 31 GB for incore.
Insert a command object to force it to run outofcore, pay attention to the double comma!
Under Analysis Settings, turn on Auto Time Stepping and set the initial substeps to 10.
Under Solution Information, set the Newton-Raphson Residuals to 3.
Why did you change the threads over to bonded contact?
I have given the bonded contacts over the threads in order to simplify my model. Is it going to make much difference in the solution?
Is it correct to give frictional contact over threads?
I had made the changes suggested by you in my model but still getting an unknown error. Please help.
You did not insert a Command Object into the model.
Click on Static Structural, then on the Environment tab click on the Commands button.
Type the text shown. Make sure to use two commas!
As I said above, your computer only has 24 GB of memory, and ANSYS should automatically choose outofcore, but it is wrongly choosing incore which requires > 30 GB of memory.
What is the purpose of this analysis? If it is to see the effect of the screw preload tension on the body under the screw head, you could get a good result much faster if you went back to CAD and sliced off the screw threads and the body they screw into at the plane where the cylindrical face of the screw ends. Just put a fixed support on the faces in that plane. Now the model will solve much faster and you won't need the Command object, it will solve incore.
This time I have changed the thread contacts to frictional one and Ansys has automatically chosen outofcore memory.
But now I am getting some other error. Please have a look.
Shobhit, you need to develop your own skills at diagnosing problems with ANSYS solutions. The previous errors where the solver suddenly stops running because it runs out of memory are a bit more difficult to diagnose, but I helped you get past that. Take a look at the Solver Output from this latest solve, find the error and try to figure out what it means. Depending on the error, there are different remedies. Examples of how to get past them can be found on this site, but first you have to understand the error.
Ansys customers with active commercial software licenses can access the
customer portal and submit support questions. You will need your active account number to register.