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Hii all,
I am going through a modal frequency response analysis on a crankshaft and getting an error of 5408.How can I resolve this error and successfully achieve the results?I am attaching the required files ans screen shot.
Hi Siddhee,You are receiving an error message below
*** ERROR # 5408 *** Aborting analysis because no structural modes have been computed in the modal dynamic subcase 1.
Which means there are no normal modes in the rage you are requesting in EIGRL CARD.
Be sure that there are all normal modes you desire for your MFR including your FREQi range (it recommend using at least 1.5 times higher than the latest model for MFR).Thank you,
Hi Siddhee,You are receiving an error message below *** ERROR # 5408 *** Aborting analysis because no structural modes have been computed in the modal dynamic subcase 1. Which means there are no normal modes in the rage you are requesting in EIGRL CARD. Be sure that there are all normal modes you desire for your MFR including your FREQi range (it recommend using at least 1.5 times higher than the latest model for MFR).Thank you,
I set the initial freq as 20,increment as 20 and number of increments as 49 under freqi card img and initial freq as 0 and final as 1500 under eigrl card img as I want freq range 0-1000.still getting same error.
But when I took final freq as 20000 I am getting a simple plot with no displacement.I have attached the picture for the same
Please use even a very higher value since you are constraining your model hard.Check the model attached running properly.Thanks,
Thankyou for your reply
I imported this file and simply solved still getting the same error.I am using Student version
Are you using v2022?I have attached the results files for this deck file as well.
So, it's running properly.Please try using a number of normal modes (N) instead of the range for your model.Also, increase the range for FREQi as well for your model.
Thanks,
I took ND as 2 instead of range and F1 = 50,D1=50,NDF = 89 and I am getting constant displacement graph is it a correct result?
I wanted the result of freq range between 0-1000
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