Another small thermal analysis: A bimetallic bar where the upper half thickness is stainless steel and the lower half is aluminum. The bar is straight at T=20C but the applied temperature is 120C. The MECA-STATIQUE analysis solves for displacements and stresses.
As Claus wrote this command creates (CREA) a field (CHAM) of nodal (NOEU) temperatures (TEMP) as real (_R) values. They are all (TOUT) then assigned (AFFE) the value 120 stored as the named component TEMP.
[code:1]TEMPDATA=CREA_CHAMP(TYPE_CHAM='NOEU_TEMP_R',
OPERATION='AFFE',
MODELE=MECAMOD,
AFFE=_F(TOUT='OUI',
NOM_CMP='TEMP',
VALE=120.,),);[/code:1]
The temperature field is then assigned to the nodes with the AFFE_VARC keyword where also the reference value is defined:
[code:1]MAT_MECA=AFFE_MATERIAU(MAILLAGE=MESH,
MODELE=MECAMOD,
AFFE=(_F(GROUP_MA='M1',
MATER=AL,),
_F(GROUP_MA='M2',
MATER=ST,),),
AFFE_VARC=_F(TOUT='OUI',
NOM_VARC='TEMP',
CHAMP_GD=TEMPDATA,
VALE_REF=20.,),);[/code:1]
ASTER commands and mesh is attached and the deformations are illustrated on the image.
Attachment BiMetal.zip not found
<br /><br />Post edited by: Torben, at: 2009/12/07 22:25
