large displacements with DKT
- Tom G.
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15 years 5 months ago #3761
by Tom G.
large displacements with DKT was created by Tom G.
Hello!
which options should I use when solving a static problem with large deformation? I want to use STAT_NON_LINE. I want to know the displacement in X-direction (longitudinal).
the following doesn't work with DKT
[code:1]
...
COMP_INCR=_F(RELATION='VMIS_ISOT_TRAC',
DEFORMATION='SIMO_MIEHE',),
...
[/code:1]
Thank you,
Tom G.<br /><br />Post edited by: Tom G., at: 2010/01/22 15:40
which options should I use when solving a static problem with large deformation? I want to use STAT_NON_LINE. I want to know the displacement in X-direction (longitudinal).
the following doesn't work with DKT
[code:1]
...
COMP_INCR=_F(RELATION='VMIS_ISOT_TRAC',
DEFORMATION='SIMO_MIEHE',),
...
[/code:1]
Thank you,
Tom G.<br /><br />Post edited by: Tom G., at: 2010/01/22 15:40
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- grand
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15 years 3 months ago #3962
by grand
Replied by grand on topic Re:large displacements with DKT
Have a look at Aster documentation.
For example, see "SSNL501 - Poutre encastrée aux deux extrémités soumise à une pression uniforme" (V6.02.501) or its english translation.
This is an example with DKT elements and STAT_NO_LINE. I think this is a good starting point.
For example, see "SSNL501 - Poutre encastrée aux deux extrémités soumise à une pression uniforme" (V6.02.501) or its english translation.
This is an example with DKT elements and STAT_NO_LINE. I think this is a good starting point.
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15 years 3 months ago #3963
by Claus
Code_Aster release : STA11.4 on OpenSUSE 12.3 64 bits - EDF/Intel version
Replied by Claus on topic Re:large displacements with DKT
Quote from [U3.12.01] Modélisations DKT - DST - Q4G
I summation, you best bet is to convert your mesh to a quadratic one and use COQUE_3D instead.<br /><br />Post edited by: Claus, at: 2010/03/12 13:09
'PETIT_REAC'
The increments of strains used in the relationship of incremental behavior are
linearized deformations of the displacement increment in the updated geometry.
Note:
Attention, calculation of deformation using PETIT_REAC is an approximation of
assumptions of large displacements. It requires the use of very small increments
loading. To properly take into account large displacements, especially
large rotations, it is recommended to use modeling COQUE_3D with
DEFORMATION = 'GREEN_GR'.
I summation, you best bet is to convert your mesh to a quadratic one and use COQUE_3D instead.<br /><br />Post edited by: Claus, at: 2010/03/12 13:09
Code_Aster release : STA11.4 on OpenSUSE 12.3 64 bits - EDF/Intel version
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15 years 3 months ago #3966
by Tom G.
Replied by Tom G. on topic Re:large displacements with DKT
i am still working on it - thank you!
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