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Hi,
I know the result from felxible body in MBD could be recovered for Fatigue analysis. However, I don't know how to do that. How can I use EL2PROP card to assign material?
Hi @Toan Nguyen
Use ASSIGN H3DMBD to identify the flexbody file and create a bulk unsupported card for EL2PROP and key in the shown format:
Where the second field is the element set, followed by property type and property ID
Thank you for your answer. I have one more question. What should I input for FATDEF.Because I want to perform Fatigue analysis by recovering stress from MBD, I don't know how to assign data to this load collector.
And if I usee12prop with element set id in the second field. Does that set have to contain element.? As far as I know, it must contain element in flexible-body, Is that true ??
Yes,
I will check and get back to you soon.
When creating the flexible body in OptiStruct, you have the option, to create a recovery file “MBDREC”. You have to the the corresponding option in the PARAM card.
After the MotionSolve run, you have the option to load MotionSolve’s MRF and the *_MBDREC.H3D into OptiStruct in order to do transient stress recovery analysis.
Please refer to MBDREC from OptiStruct help for more information on same.
hi, thank you so much for quick answer.
If possible, could you please give me an example of FEM file for Fatigue Analysis using MBD result recovery. I will be very thankful
I dont have one right now, But will check if I can find one which can be shared.
Is there any update about FATDEF load collector. Since I use MBD result for Fatigue, I have no idea on how to create a set of element to assign to FATDEF card.
You can create elements set with the .fem or .hm file and use the same in FATDEF
hi, Thank you for the respond. But I got stuck right there. When I use ASSIGN/MBDINP to point to the .mrf file, it is required to leave my model BLANK. It means I can not create any element in model if I use MBDINP. If I try to do that, there will be an error message. Since there is no element created, the set of elements could not be created also. That makes me really confused. If OptiStruct doesn't allow me to create any element in model when use MBDINP, how could I define set of element for FATDEF and also for EL2PROP
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