Hi everyone,
I'm working on UEL and recently I've developed a shell element. To define an element in input file, I'm using counter-clockwise rotation for nodes. With just just one element everything is good. When I'm trying to couple bunch of elements in a row together it's giving me some weird results. I realized that if I define different node rotations (to define elements in input file), for elements next to each other, it will work. Let's say I want to couple four elements together. Normally I should use counter-clockwise node rotation for all of them but, here I must use counter-clockwise for the first one, clockwise for the second one, counter-clockwise for the third one and clockwise for the fourth one.
Would you please let me know why that is and how I can fix it up?
Best Regards,
I will assume that you are using ABAQUS. I will assume you want to make a 2D simulation of one layer of shell elements. In some versions of ABAQUS you can use EGEN to copy the first element to make a raw of elements. I suggest using this and test if you still have an issue. The switching of Node definition from ccw to cw is not correct. I am not sure with the "coupling" of elements that you used in your question. Adjacent elements share a set of nodes which make the model continuous. Please clarify "coupling of elements" task that you are trying to do.
Ayman,
I do appreciate your response.
As you have mentioned, I'm using ABAQUS to make a 2D simulation with shell elements.
What I mean by "coupling" is making a row of elements. You are right, changing the definition from ccw to cw is not correct. I have no idea why it's working like that and I would appreciate if you can help me.
BTW, you mean ELGEN or it's EGEN?
Best Regards,
Ashkan, It is "*ELGEN
Incremental element generation.
This option is used to generate elements incrementally."
Please use ABAQUS examples to see how can you use it to make a raw of shell elements.
The steps I will suggest is to find an example that uses shell elements in metal forming and follow the *.inp file to see how the element is defined and then how they use it generate a sheet. You may look for deep drawing , stretching, or Springback examples with shell elements being used. BTW, to stack multiple elements across the thickness of the sheet, you will need to use "composite shell element" which will define a thickness of the shell elements and number of layers across the thickness instead of stacking a group of shell elements across the thickness. I hope that helps! BTW, what is the process that you are trying to simulate? are you working on metals or composites? Good luck! Ayman
Ayman,
Thanks for your consideration and response.
I will check it out and let you know.
I'm working on wave propagation-based SHM in composite materials.
Would you mind if I ask you to let me be in touch with you?
Best Regards,
Ashkan, please go ahead and use my work email address [email protected] for future contacts. Good luck!
Ayman,
Thanks for your consideration and response.
I will be in touch with you via EMail.
Best Regards,
Ayman,
Thanks for your consideration and response.
I will be in touch with you via EMail.
Best Regards,
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