Hi Kian, I could be able to visualize user elements defined in VUEL with the help of VUMAT. My objective now is to learn how to visualize specific values in Abaqus. For instance, after calculating the stretch, I want to highlight values that exceed 1% compared to the rest. In another word, I have binary values (1 or 0) representing whether a bond is intact or broken. These values are stored in one of the svars columns. I am seeking guidance on how to visualize this particular column of svars file. DO you have any available videos that I can watch or are yo uaware of any source that I can use? many thanks in advance!
Since the user-defined elements do not exist in ABAQUS library, ABAQUS does not show them in Visualization module by default. Thus, a hypothetical material with a very low stiffness is considered and used for visualization. Even though, there are other ways.
@@kianaghani Thank you for the information, I assume this is like a dummy element that you overlay on top the deformed material to mimic the deformation, and then use it to plot the deformation, etc.. is that right? What if the shape of elements of the deformed material are not the same as the available elements shape for dummy element? I give you an example, I have a element like a star with central node and 13 nodes distributed around it and all connected to the central node, if i want to plot displacement of the nodes, then what kind of element should be chosen for the dummy (decoy) material. I am even wondering that may not be possible! I am looking for this and nothing found yet.
@@mortazapirouz7482 So first, you have to have a FE formulation for that star. Assuming that the formulation exists, after having the results for your user-defined element, divide the star into several tri or quad dummy elements and write a code to share/assign the results with the nodes of the dummy elements. In this way, ABAQUS assumes a dummy star body (which is constructed using several tri or quad dummy elements) with the node displacements according to your results. It is a hard procedure.
@@kianaghani Thank you for the hint. The formulation exists, and I will try what you said. Right now I am trying to export SVARS for nodes to see the displacement on the nodes and later I should convert node displacement into element displacement. I agree it is hard, specially with no/little experience with FEM and Abaqus.
It is just a name man , you can name it any other name which is more relevant in your case. for ex., i use like CZM since I am using cohesive elements .
Thank You for the great video. Inspired from your video, I tried modifying my own input file but now I am facing an issue in line 82 of your input code as : "" in keyword *MATERIAL, file "job1.inp", line 36: The keyword is misplaced. It can be suboption for the following keyword(s)/level(s): model "". Could you please explain this error
Hi Kian, I could be able to visualize user elements defined in VUEL with the help of VUMAT. My objective now is to learn how to visualize specific values in Abaqus. For instance, after calculating the stretch, I want to highlight values that exceed 1% compared to the rest. In another word, I have binary values (1 or 0) representing whether a bond is intact or broken. These values are stored in one of the svars columns. I am seeking guidance on how to visualize this particular column of svars file. DO you have any available videos that I can watch or are yo uaware of any source that I can use? many thanks in advance!
Step module >> Field output >> SDV
THANK YOU! Very useful. I am just wondering if you can explain a bit more about Decoy and its purpose.
Since the user-defined elements do not exist in ABAQUS library, ABAQUS does not show them in Visualization module by default. Thus, a hypothetical material with a very low stiffness is considered and used for visualization. Even though, there are other ways.
@@kianaghani Thank you for the information, I assume this is like a dummy element that you overlay on top the deformed material to mimic the deformation, and then use it to plot the deformation, etc.. is that right? What if the shape of elements of the deformed material are not the same as the available elements shape for dummy element? I give you an example, I have a element like a star with central node and 13 nodes distributed around it and all connected to the central node, if i want to plot displacement of the nodes, then what kind of element should be chosen for the dummy (decoy) material. I am even wondering that may not be possible! I am looking for this and nothing found yet.
@@mortazapirouz7482 So first, you have to have a FE formulation for that star. Assuming that the formulation exists, after having the results for your user-defined element, divide the star into several tri or quad dummy elements and write a code to share/assign the results with the nodes of the dummy elements. In this way, ABAQUS assumes a dummy star body (which is constructed using several tri or quad dummy elements) with the node displacements according to your results. It is a hard procedure.
@@kianaghani Thank you for the hint. The formulation exists, and I will try what you said. Right now I am trying to export SVARS for nodes to see the displacement on the nodes and later I should convert node displacement into element displacement. I agree it is hard, specially with no/little experience with FEM and Abaqus.
Thank you for the video. I don't understand why the decoy element. Can you please further elaborate sir?
It is just a name man , you can name it any other name which is more relevant in your case. for ex., i use like CZM since I am using cohesive elements .
See my previous video. I use decoy element for visualization.
Thank You for the great video. Inspired from your video, I tried modifying my own input file but now I am facing an issue in line 82 of your input code as : "" in keyword *MATERIAL, file "job1.inp", line 36: The keyword is misplaced. It can be suboption for the following keyword(s)/level(s): model "". Could you please explain this error
Thanks. It might be due to typing error.
Thanks for the video, very helpful, i have a question about UEL, can i send you a mail ?
Yes you can.
kian.aghani@gmail.com