Large buckling @ po...
 
Notifications
Clear all

Large buckling @ point of displacement

1 Posts
1 Users
0 Likes
146 Views
Posts: 13
Topic starter
(@mmia1)
Paid Intern
Joined: 7 months ago

Hi

 
I tried to do a simulation of a straight pipe which has boundary conditions and load as displacement as below:
image
There are three pipes which have roller @ middle of that pipes. At one end, I tried to apply 0.305 m prescribed motion by selecting pipe1 front nodes and apply *Boundary _prescribed_motion  likes below:
image

Herein I used Constrined nodal rigid body spc restraining x and z displacement (CON1 = 6) and all rotations were restrined (CON2 = 7). And in Y direction, I used 0.305 m displacement. The problem is that I got defected shape like below:

image
Also, when I check reaction force spcforc, I found that RX and RZ are pretty high (Rz at third pipe fixed support nodes, RX every roller) while there should be only Ry at first pipe roller position nodes. I tried all other ways but could not solve these issues. Please take a note, I used MAT_kinematic_hardening model. 
 
Any suggestions would be really appreciated. Thanks again.
Topic Tags







Share: