Time for Linear Static Analysis
Time for Linear Static Analysis
(OP)
Hi everyone, I've just started using eng-tip and I like to say it is one of the best engineering forums about!
As I'm sitting here waiting for my analysis to complete I was thinking has anyone correlated average times for analysis to complete vs. number of nodes, elements and DOF's. I'm fairly new to complex assembly analysis. 6hrs in and no indication of how much longer to go. I have quite a few models to run through so I was thinking I might set up a dedicated FEA PC I have lying around as I'm using my laptop at the moment and it's not to good for portability.
I'm not running an awesome system (Laptop) and the desktop is fairly similar:
- Core 2 Duo @ 2GHz
- 4GB RAM
- Windows 7 Build 7077 (is nice and stable at the moment)
- Nvidia 8400GM
- Solidworks 09 with Cosmos Advanced Pro.
Anyone got any thoughts, ideas, suggestions???
As I'm sitting here waiting for my analysis to complete I was thinking has anyone correlated average times for analysis to complete vs. number of nodes, elements and DOF's. I'm fairly new to complex assembly analysis. 6hrs in and no indication of how much longer to go. I have quite a few models to run through so I was thinking I might set up a dedicated FEA PC I have lying around as I'm using my laptop at the moment and it's not to good for portability.
I'm not running an awesome system (Laptop) and the desktop is fairly similar:
- Core 2 Duo @ 2GHz
- 4GB RAM
- Windows 7 Build 7077 (is nice and stable at the moment)
- Nvidia 8400GM
- Solidworks 09 with Cosmos Advanced Pro.
Anyone got any thoughts, ideas, suggestions???






RE: Time for Linear Static Analysis
I was taught years ago to start with a coarse mesh to be sure the setup is working, then refine the mesh as needed.
RE: Time for Linear Static Analysis
6 hours seems like a lot, check and see if the model is all in RAM, if not fit more RAM.
My downmarket laptop runs 100000 node problems in about 3 hours, as I have enough RAM to run them in memory.
If you do not hav enough RAM your computer will spend the entire time talking to the disk and this can increase execution time by a factor of 8.
Cheers
Greg Locock
SIG:Please see FAQ731-376: Eng-Tips.com Forum Policies for tips on how to make the best use of Eng-Tips.
RE: Time for Linear Static Analysis
This leads to another question will the bond connection between 2 surfaces of 2 parts, (1 part be fully fixed) completely constrain the parts?
RE: Time for Linear Static Analysis
Thanks for all the comments.
RE: Time for Linear Static Analysis
I don't think COSMOS lets you direct where temp files go, so the effect probably isn't as great.