Recent content by njain094

Hello, I did with a simpler model and it works.

Hello FEA way, Did you get a chance to look at the figures?

Yes, I was struggling to do that. The link was not appearing. I had to manually do that.

Hello, I apologize for getting back to you so late. I have attached a pdf containing the models used in enlarged 1x2 unit-cell periodic analysis (page 1) and Bloch Analysis (page 2). I am using a simple beam element (B21) with just one element between the joints as I am not creating a fine...

Hello, I am trying to find the critical periodicity of a discrete structure using Bloch Analysis. From Bloch Analysis, I get the critical periodicity as 1x2. Now, when I compare the first frequency obtained from Bloch Analysis for the critical periodicity (i.e. 1x2) to the enlarged 1x2 unit...

Hello, I am trying to do multiple load case analysis in a static linear perturbation step with user element subroutine. It seems that only the first load case is solved properly. I do not get the correct results for other load cases. Please let me know if somebody knows how to do multiple load...

I am using subspace.

Yes, I understand that and I provided a nonzero load.

You have to use MPC subroutine to apply these boundary conditions. My MPC subroutine works because I have done Frequency analysis and the results match. But somehow when I do buckle analysis it says a nonzero load should be applied, which I did.

Hello, I am trying to perform Buckle analysis with Bloch boundary conditions. It gives me an error saying a Nonzero boundary condition is not specified. But I did define a non zero boundary condition at the virtual node. I have already used Bloch boundary conditions with frequency analysis and...

Hello, Thank you for replying. I understand that I have to calculate stresses in UEL. I think I have to store them in SVARS and then call getvrm in UVARM subroutine to access these stresses. But I am not sure of the numbering and how they connect to each other. Regards,

Hello, I ran a static general simulation where I overlapped a dummy mesh over user elements to capture deformation. Now, I would like to see the stresses in the user element displayed on this dummy mesh. I understand that first I have to define stresses in UEL then I have to use UVARM to...

Hello, Thanks for replying. It is a simple linear Beam element. I tried to find the FEM formulation for the beam element in Abaqus. I found it very complicated in Abaqus documentation. And I know geometric nonlinear beam element formulation from FEM books. I tried to replicate the same in UEL...

Hello everyone, I am working on UEL to create my own element. I observed that in my model there are large displacements. So, I need to incorporate geometric nonlinearity in the model. If anyone knows how to introduce geometric non-linearity in UEL please let me know. Or if you know the theory...

hello, please find the attached input file.https://files.engineering.com/getfile.aspx?folder=eb7002f8-98d3-49fd-9bf3-972069aef9d8&file=Rot_Spring.inp