Curved line with CROD properties

Vladimir_Gantovnik

Hi guys! I tried to use CROD elements for curved lines generated by spline, and it did not work. 

And it gives me displacements like this

Why do elements not work together? I want to model the curve using 1D elements.

Thank you!

Vladimir

Jason_Craanen

Hello 

CROD elements only have axial and torsional degrees of freedom

https://help.altair.com/hwsolvers/os/topics/solvers/os/crod_bulk_r.htm?zoom_highlight=crod

Please try a CBEAM/CBAR element instead

https://help.altair.com/hwsolvers/os/topics/solvers/os/cbeam_bulk_r.htm?zoom_highlight=cbeam

You can review the different element types here

https://help.altair.com/hwsolvers/os/topics/solvers/os/elements_user_guide_os.htm#elements_user_guide_os

Jason_Craanen

Hello 

CROD elements only have axial and torsional degrees of freedom

https://help.altair.com/hwsolvers/os/topics/solvers/os/crod_bulk_r.htm?zoom_highlight=crod

Please try a CBEAM/CBAR element instead

https://help.altair.com/hwsolvers/os/topics/solvers/os/cbeam_bulk_r.htm?zoom_highlight=cbeam

You can review the different element types here

https://help.altair.com/hwsolvers/os/topics/solvers/os/elements_user_guide_os.htm#elements_user_guide_os

Vladimir_Gantovnik

Jason Craanen_20442 said:

Hello 

CROD elements only have axial and torsional degrees of freedom

https://help.altair.com/hwsolvers/os/topics/solvers/os/crod_bulk_r.htm?zoom_highlight=crod

Please try a CBEAM/CBAR element instead

https://help.altair.com/hwsolvers/os/topics/solvers/os/cbeam_bulk_r.htm?zoom_highlight=cbeam

You can review the different element types here

https://help.altair.com/hwsolvers/os/topics/solvers/os/elements_user_guide_os.htm#elements_user_guide_os

Thank you! For some reason, I thought the CROD was more complex. I have never used it before and decided to try it because I wanted to use it for a simple optimization example. I will change to beam elements.

Vladimir_Gantovnik

with PBEAM and PBEAML everything works perfect.