3d beam interaction with fluid

 Posts: 6
 Joined: 04 Apr 2013, 11:46
 Antispam: Yes
3d beam interaction with fluid
the example shows the interaction of a linear elastic 3d beam in a fluid. Stress and displacements in the beam are calculated from the pressure of the fluid as load case on the beam. The grid is rude, but its just for fast calculation of this example Small displacements are assumed (1. order elastic theory). No mesh update is done for this reason. The example is a full GUI example.
 Attachments

 files.zip
 sif, ep, and elmer files
 (1020.96 KiB) Downloaded 449 times

 the system
 system.jpg (98.4 KiB) Viewed 6375 times

 Posts: 6
 Joined: 04 Apr 2013, 11:46
 Antispam: Yes
Re: 3d beam interaction with fluid
The results are in the sign (where it is posititve it should be negative) inverted.
Re: 3d beam interaction with fluid
Thanks, this is really useful! Is there any chance you could post the .grd (or other meshing file) used in this test?
Thanks!
Thanks!
Re: 3d beam interaction with fluid
good one
but i can´t get it to converge:
ERROR:: IterSolve: Failed convergence tolerances.
ERROR:: ComputeChange: Norm of solution appears to be NaN
Is necessary to change "your default definitions" on the Setup or Iterations or tolerances to converge?
best regards
but i can´t get it to converge:
ERROR:: IterSolve: Failed convergence tolerances.
ERROR:: ComputeChange: Norm of solution appears to be NaN
Is necessary to change "your default definitions" on the Setup or Iterations or tolerances to converge?
best regards
Re: 3d beam interaction with fluid
Hi
I am running simple elasticity problem (to compare linear and nonlinear solutions). While using the nonlinear elasticity solver, I had the same issue :
ERROR:: IterSolve: Failed convergence tolerances.
ERROR:: ComputeChange: Norm of solution appears to be NaN
The output is still generated, but is wrong, as can be seen in the fig attached. Any guidance would be appreciated.
Thanks.
I am running simple elasticity problem (to compare linear and nonlinear solutions). While using the nonlinear elasticity solver, I had the same issue :
ERROR:: IterSolve: Failed convergence tolerances.
ERROR:: ComputeChange: Norm of solution appears to be NaN
The output is still generated, but is wrong, as can be seen in the fig attached. Any guidance would be appreciated.
Thanks.
 Attachments

 nonlin10e7error.png
 (20.43 KiB) Not downloaded yet