## HELP : Modal Analysis of Piezoelectric UEL Element

Hello Experts,

I am trying to do modal analysis on user-defined piezoelectric shell element. My eigen value probelm of free vibration is given in the attachment.

## Help me : Node Print of User Defined Degree of Freedom

Hello Experts,

I have written a uel subroutine where I have totally 12 degree of freedom. Among these 12 degree of freedom, 6 are standard abaqus degree of freedom (3 Displacements and 3 Rotations) and another 6 are User defined degree of freedom.

I assign these these degree of freedom in following way.

*USER ELEMENT,TYPE =U9, NODES=9,PROPERTIES=24,coordinates=3
1,2,3,4,5,6
9,1,2,3,4,5,6,7,8,9,10,11,12

## NUMBER OF EIGENVALUES FOUND ON THE INTERVAL EXCEEDS THE EXPECTED NUMBER.

Hello Experts,

I am trying to extract the eigenvalues of the User-Defined Element. I am getting following error when I try to extract frequencies using Lanczos method

*Frequency, eigensolver=Lanczos, acoustic coupling=off, normalization=displacement
3,,,, , ,

## Plotting Displacement over a length in Abaqus

Hello Abaqus Users,

I need to plot deflection (U3) along y axis when x = 0. How to achieve this in Abaqus?

Thanks and Regards,

Somu

## UEL Subroutine aborts with error 5.

Hello Experts,

I have written a Uel subroutine and trying to implement on a plate constrained at all the edges.

My UEL Subroutine executes without any errors when the total number of elements are just 15 to 20. But when I increase the number of elements and mesh it more fine, My Uel subroutine aborts with ERROR Code 5.

If I print the JELEM, UEL Subroutine is aborting always at 52th Element, i.e when JELEM=52. Even when I remesh the structure with different size, Uel subroutine consistantly aborts for the 52ed element.

## Meshing with UEL/UMAT element

Hello All,

Does anyone have any idea how to automate meshing  using USER DEFINED ELEMENTS (for Example UEL) in Abaqus using python. Actually I need to mesh an arbitrary shaped structure  with 9-Node Quadrilateral Element. Abaqus doesn't support meshing of  9 Node Quad Element (S9R) either.

## Why " *Node Print " prints information of only Constrained Nodes in Abaqus ?

Hello All,

I am Master student of Computational engineering at Ruhr University
Bochum, Germany. Presently I have to do testing and do post-processing of UEL Subrouitne for 9 NODE
Piezo-Electric Element .  I am not able to get the displacements of all  nodes in the
.dat file.  Below is my piece of code  of  INPUT file

*STEP,PERTURBATION
*STATIC
*NODE PRINT
U
RF
COORD
*endstep