Learning Forum

[BALA]

I am performing the MSUP Tranisent analysis where, I am doing shock analysis that is Acceleration is half sine curve 15 G for 11 ms. Once i completed my Modal analysis I done all the necessary settings in Transient analysis and clicked on solve option, at this for next 20 minutes Ansys WB was not responding and after few time it started solving. But now after 6 hrs it is still completed 1% and showing expanding modal solution as a status. My model size is 5 lakh nodes which i have already reduced from 12 lakh nodes. MY PC configeration are also high that 216 GB RAM and 3 TB harddisk. Does Transient analysis usually takes this much time to solve. Please help

[Ashish Khemka]

Hi,

How many cores are you using? What is the location of the temporary files? The reason to ask this is that you have the location of temporary files in a folder with maximum disk space.

I did not expect MSUP Transient to take so much time. Mode superposition transient analysis is a computationally efficient method of solving the time-varying response of a structure, as it uses a linear combination of mode shapes instead of solving the coupled equations directly.

 

You can also refer the following course to cross-check the settings used: Mode Superposition Transient Analysis | Ansys Courses

Regards,

Ashish Khemka

 

[BALA]

Thanks for the reply.

  I am using 32 cores, temp files are saving in C drive which almost has 3 TB Free.  After doing some trials i found that if i change the Store results at setting from all time points to equally spaced 10 or 20, then it is taking 40 min approx.

   But my concern is that i am having very good configuration PC bu still it staking this much time. In future i will be performing more heavy models so just need are there any settings i am missing.

 

[Ashish Khemka]

Hi,

I cannot think of any other issues. The only other suggestion would be to simplify the model if possible.

Regards,

Ashish Khemka