Dear @Nitin.Sivakumar,
How many .out files are you using? Do all of them have the same number of time steps and same number of output channels? Have you tried running with just one of your .out files (NumDLCfiles = 1)?
Best regards,
Dear sir,
I am interested in using 3 .out files however, I tried with 1 .out file also with âNumDLCfiles=1â. Yes all of them have the same number of time steps and output channels.
Thanks and Regards
Dear @Nitin.Sivakumar,
Does MExtremes run with NumDLCfiles = 1 and one of our .out files? If not, what is the error?
Best regards,
Dear sir,
Yes, it is working with 1 .out file added. No errors are shown. I am attaching the screenshot of the Matlab command window for your reference.
Thanks and Regards
Dear @Nitin.Sivakumar,
Iâm not sure what the problem is. My understanding is that MExtremes runs fine running the original Test02 case with three files, but you when you use your three files it doesnât work. But switching to one of your files does work. What is you use two of your files or three files, but all files exactly the same as the case that does work?
Best regards,
Dear sir,
There has been a misunderstanding. From your last message, I could read âone of our .out filesâ , so the last result I showed was with the âDLC2.3_1.outâ which is one of your files (as you can see in the screen capture). I could never complete the simulation with either 1 or three of my .out files.
Best Regards
Dear sir,
I had modified one of my previous post and attach a google drive link because the .out file is a large file. I will attach again anyway.
Regards
https://drive.google.com/drive/folders/1_o45hVBBbQPOewVPCzPrsfmUBO0r7dBH?usp=sharing
Dear @Nitin.Sivakumar,
Can you also share your modified .mext file for the NumDLCfiles = 1 case and and resulting error you are receiving?
Best regards,
Dear Jason sir,
I was mistaking the wind channel name to be same in both out files. But in the original one it was $WindVxi$ and in mine it was $Wind1VelX$. This was causing me errors. Now it worked. Thank you for your patience and sorry for not noticing.
Best Regards
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Dear sir,
I have one more doubt in a post you made regrding the selection of LUlt. In this segment of your post, I have attached below, do you mean I need to take the maximum value of desired channel in the extreme out file and multiply by the scaling factors of 1.25 to 20 and use those values for MLife simulation as L_Ult and observe the DEL value. But I could not understand what you meant by approaching asymptotical stability and how to observe that. Can you make it a bit clearer. Thanks in advance.
Best Regards
Ideally, LUlt would be based on a strength (e.g., FEA) analysis of the cross section of the component in question. If this is not availableâfor conceptual designs for exampleâwhat weâve done in the past is to see how the fatigue loads vary over a range of LUlt values. Weâve defined a range by taking the overall maximum value of the load in question (e.g., derived from MExtremes), and multiplying by scaling factors of 1.25, 2.5, 5, 10, and 20. The fatigue loads will asymptotically approach a fixed value for large values of LUlt.
Dear @Nitin.Sivakumar,
If you donât know the ultimate strength of a given cross section, but you need to know the LUlt value, what weâve done in the past is to use some multiple of the overall maximum value of the given load. The DEL will approach a fixed value for large values of LUlt.
Best regards,
Dear sir,
The maximum value of load means maximum value of desired channel of .out file (e.g. RootMyb) found from Mextreme . Am I correct.
Correct. More specifically, the maximum absolute value over all load cases.
Dear sir,
Thank you very much.
Best Regards