I have an assembly model that is currently at ~208k elements/ ~406k nodes. All contacts are bonded. I have to run 11 analysis studies as specified from customer requirements. The assembly file size is 1.3 GB. It is painfully slow to open up NASTRAN (~41 minutes) for the first time and also very slow to switch between analysis (~10-20 minutes). I apologize for not sharing the model. I am hesitant to do so because of company policy.
Does anyone know of an efficient workflow to deal with this scenario? I am thinking of converting the assembly model to a solid body part to remove the contacts. Not sure how much this would help. I am also thinking of grouping the analysis files into multiple assemblies to increase file opening speed, but there are obvious downsides to that as well.
Any feedback is welcome, thank you in advance!
Laptop Specs:
Processor 11th Gen Intel(R) Core(TM) i7-11850H @ 2.50GHz
Installed RAM 48.0 GB (47.2 GB usable)
Edition Windows 11 Pro
Version 22H2
Installed on 10/11/2023
OS build 22621.3007
Experience Windows Feature Experience Pack 1000.22681.1000.0
Solved! Go to Solution.
I have an assembly model that is currently at ~208k elements/ ~406k nodes. All contacts are bonded. I have to run 11 analysis studies as specified from customer requirements. The assembly file size is 1.3 GB. It is painfully slow to open up NASTRAN (~41 minutes) for the first time and also very slow to switch between analysis (~10-20 minutes). I apologize for not sharing the model. I am hesitant to do so because of company policy.
Does anyone know of an efficient workflow to deal with this scenario? I am thinking of converting the assembly model to a solid body part to remove the contacts. Not sure how much this would help. I am also thinking of grouping the analysis files into multiple assemblies to increase file opening speed, but there are obvious downsides to that as well.
Any feedback is welcome, thank you in advance!
Laptop Specs:
Processor 11th Gen Intel(R) Core(TM) i7-11850H @ 2.50GHz
Installed RAM 48.0 GB (47.2 GB usable)
Edition Windows 11 Pro
Version 22H2
Installed on 10/11/2023
OS build 22621.3007
Experience Windows Feature Experience Pack 1000.22681.1000.0
Solved! Go to Solution.
Solved by John_Holtz. Go to Solution.
Hi @dnunezHSLXH
~208k elements/ ~406k nodes is not that large, but other aspects of the model may contribute to the speed.
Merging the separate CAD parts would reduce the number of contacts. That would be helpful if you have many contacts listed in the model tree and did not want to replace them with solver contact. (Deleting all those contacts will take a long time and may not be worth it at this point.) The disadvantage is if you need to hide some parts to see others. Naturally, you cannot hide a piece if it is merged with other pieces.
John
Hi @dnunezHSLXH
~208k elements/ ~406k nodes is not that large, but other aspects of the model may contribute to the speed.
Merging the separate CAD parts would reduce the number of contacts. That would be helpful if you have many contacts listed in the model tree and did not want to replace them with solver contact. (Deleting all those contacts will take a long time and may not be worth it at this point.) The disadvantage is if you need to hide some parts to see others. Naturally, you cannot hide a piece if it is merged with other pieces.
John
Hey @John_Holtz,
Thanks for the quick reply!
Hey @John_Holtz,
Thanks for the quick reply!
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