HELP ERROR : ROTATED NODES 1

[jmf20010]

Hi all:
a question .why when run the ansy/lsdyna appears ITS ERROR:
*** ERROR ***
Rotated nodes are not permitted for LsDyna Elements.

WHYYY???

Thank for the answer.

 

[Stringmaker]

Dyna only supports nodal coordinate systems oriented in the global cartesian system, or CID = 0. If you provide a better description of what you're attempting that would help us to better help you.

 

[jmf20010]

Hi Stringmaker
I doing simulation a collision ship .I did a benschmark wiht other and run good but now with its analisys appear its error...why??????
Add file

 

[Stringmaker]

Before you solve or write a *.k file in /PREP7 do the following:

CSYS,0
nall
nrot,all

This will correct the issue. If you need to rotate nodes to create constraints or couples you will need to figure out a work around which is kinematically equivalent. Dyna has many options available.

Also, it looks like your model is symmetric about the XY plane...why don't you use symmetry?