Reaction forces and moments on constraint
- Fergus Rhodes
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17 years 6 months ago #1394
by Fergus Rhodes
Reaction forces and moments on constraint was created by Fergus Rhodes
Hi,
With a boundary condition applied to a face of a 3D model in Salome (eg. X displacement = 0). At the post processing stage, how can you determine the reaction forces and moments on that face? Is it possible to determine this in Salome, or is there as ASTER command which can report the forces, or forces and moments on a face ?
Thanks<br><br>Post edited by: fhr, at: 2007/10/03 04:05
With a boundary condition applied to a face of a 3D model in Salome (eg. X displacement = 0). At the post processing stage, how can you determine the reaction forces and moments on that face? Is it possible to determine this in Salome, or is there as ASTER command which can report the forces, or forces and moments on a face ?
Thanks<br><br>Post edited by: fhr, at: 2007/10/03 04:05
- Joël Cugnoni
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17 years 6 months ago #1400
by Joël Cugnoni
Joël Cugnoni - a.k.a admin
www.caelinux.com
Replied by Joël Cugnoni on topic Re:Reaction forces and moments on constraint
Hello,
the reaction forces are not calculated & reported by default, but you can do it by adding commands to your Aster command file (.comm)
0) in Salome, create a group of nodes on the region were you want to calculate the reaction forces. Export your mesh.
1) Calculation of reaction forces:
after the solution (and after CALC-ELEM), insert a CALC_NO function to calculate nodal outputs. Add the option \"REAC_NODA\" in the list of quantities to calculate.
2) to calculate the force resultant, you will need to use the POST_RELEVE_T command (=extraction of value to a \"table\" object), with the option RESULTANT on the field REAC_NODA over the region defined by GROUP_NO=YourGroupOfNode. This will create a Table object.
3) Print the table with IMPR_TABL, select the table object created in point 2. You will get the results in the .resu file after execution.
I will try to find an example to show you the details of the POST_RELEVE_T command which is quite complex!
the reaction forces are not calculated & reported by default, but you can do it by adding commands to your Aster command file (.comm)
0) in Salome, create a group of nodes on the region were you want to calculate the reaction forces. Export your mesh.
1) Calculation of reaction forces:
after the solution (and after CALC-ELEM), insert a CALC_NO function to calculate nodal outputs. Add the option \"REAC_NODA\" in the list of quantities to calculate.
2) to calculate the force resultant, you will need to use the POST_RELEVE_T command (=extraction of value to a \"table\" object), with the option RESULTANT on the field REAC_NODA over the region defined by GROUP_NO=YourGroupOfNode. This will create a Table object.
3) Print the table with IMPR_TABL, select the table object created in point 2. You will get the results in the .resu file after execution.
I will try to find an example to show you the details of the POST_RELEVE_T command which is quite complex!
Joël Cugnoni - a.k.a admin
www.caelinux.com
- johannes ackva
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17 years 6 months ago #1404
by johannes ackva
Replied by johannes ackva on topic Re:Reaction forces and moments on constraint
Hi
here an example for using CALC_NO, POST_RELEVE_T and IMPR_TABLE. It is a 2D-model with 8 zones of contact and the total contact force in each zone is calculated, see .comm and .resu-file
Good luck, Johannes
here an example for using CALC_NO, POST_RELEVE_T and IMPR_TABLE. It is a 2D-model with 8 zones of contact and the total contact force in each zone is calculated, see .comm and .resu-file
Good luck, Johannes
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