Code_Aster ®
Version
6.3
Titrate:
Modeling 3d_HM, 3d_HHM, 3d_THM, 3d_THH, 3d_THHM

Date:
04/11/02
Author (S):
C. CHAVANT Key
:
U3.14.07-C1 Page:
1/6

Organization (S): EDF-R & D/AMA

Handbook of Utilization
U3.14 booklet: Mechanical finite elements 3D
U3.14.07 document

Modelings 3d_HM, 3d_HHM, 3d_THM, 3d_THH,
3d_THHM

Summary:

This document describes for modelings 3d_HM, 3d_HHM, 3d_THM, 3d_THH and 3d_THHM:

· degrees of freedom carried by the finite elements which support modeling,
· the related meshs supports,
· supported materials and loadings,
· options of calculations for the elementary matrices and the post processing,
· nonlinear possibilities as well as the options of the breaking process if they exist.

Modelings 3d_HM, 3d_HHM, 3d_THM, 3d_THH, 3d_THHM, (Phénomène: MECANIQUE) correspond to
finite elements whose meshs supports are voluminal.

Handbook of Utilization
U3.14 booklet: Mechanical finite elements 3D
HT-66/02/003/A

Code_Aster ®
Version
6.3
Titrate:
Modeling 3d_HM, 3d_HHM, 3d_THM, 3d_THH, 3d_THHM

Date:
04/11/02
Author (S):
C. CHAVANT Key
:
U3.14.07-C1 Page:
2/6

1 Discretization

1.1
Degrees of freedom

DX, DY and DZ indicate the degrees of freedom of displacement.
PRE1 and PRE2 indicate two degrees of freedom of pressure, whose precise significance depends on
laws of behavior used. TEMP indicates the temperature.

Finite element
Degrees of freedom

3d_HM
DX, DY, DZ, PRE1
3d_HHM
DX, DY, DZ, PRE1, PRE2
3d_THM
DX, DY, DZ, PRE1, TEMP
3d_THH
PRE1, PRE2, TEMP
3d_THHM
DX, DY, DZ, PRE1, PRE2, TEMP

1.2
Net support of the matrices of rigidity

The meshs support of the finite elements can be only hexahedrons. The elements are
isoparametric.

Modeling Nets
Interpolation
Remarks

3d_HM
HEXA20
Serendip 20 nodes in
Pressure of a node medium
trilinear displacement on 8
is the average of the nodes
nodes in pressure
nodes of the segment
3d_HHM
HEXA20
Serendip 20 nodes in
Pressures of a node medium
trilinear displacement on 8
are the averages of the nodes
nodes in pressure
nodes of the segment
3d_THM
HEXA20
Serendip 20 nodes in
Pressure and the temperature
trilinear displacement on 8
of a node medium are
nodes in pressure and
average of the nodes nodes
temperature
segment
3d_THH
HEXA20
Trilinear on 8 nodes in
Pressures and the temperature
pressure and temperature
of a node medium are
average of the nodes nodes
segment
3d_THHM
HEXA20
Serendip 20 nodes in
Pressures and the temperature
trilinear displacement on 8
of a node medium are
nodes in pressure and
average of the nodes nodes
temperature
segment
Handbook of Utilization
U3.14 booklet: Mechanical finite elements 3D
HT-66/02/003/A

Code_Aster ®
Version
6.3
Titrate:
Modeling 3d_HM, 3d_HHM, 3d_THM, 3d_THH, 3d_THHM

Date:
04/11/02
Author (S):
C. CHAVANT Key
:
U3.14.07-C1 Page:
3/6

1.3
Net support of the loadings

Modeling Nets
Interpolation
Remarks

3d_HM
QUAD8
Serendip 8 nodes in
Pressure of a node medium
bilinear displacement on 4
is the average of the nodes
nodes in pressure and
nodes of the segment
temperature
3d_HHM
QUAD8
Serendip 8 nodes in
Pressures of a node medium
bilinear displacement on 4
are the averages of the nodes
nodes in pressure
nodes of the segment
3d_THM
QUAD8
Quadratic in displacement
Pressure and the temperature
linear in pressure and
of a node medium are
temperature
average of the nodes nodes
segment
3d_THH
QUAD8
Bilinear on 4 nodes in
Pressures and the temperature
pressure and temperature
of a node medium are
average of the nodes nodes
segment
3d_THHM
QUAD8
Serendip 8 nodes in
Pressures and the temperature
bilinear displacement on 4
of a node medium are
nodes in pressure and
average of the nodes nodes
temperature
segment

2
Significance of the symbols

·
corresponds to a functionality available

corresponds to a functionality which could exist but noncurrently available
Name of case corresponds to a test implementing the functionality
test

3 Materials
supported

DEFI_MATERIAU
3d_HM
3d_HHM
3d_THM
3d_THH
3d_THHM

THM_LIQU
SSNV134C WTNV112B WTNV109A
·
·
THM_GAZ
SSNV134C WTNV122B WTNV109A
·
·
THM_VAPE_GAZ
WTNV112B
·
·
THM_INIT
SSNV134C WTNV112B WTNV109A
·
·
THM_DIFFU
SSNV134C WTNV112B WTNV109A
·
·
ELAS
SSNV134C WTNV112B WTNV109A

·
CJS
SSNV134C ·
·

·
ELAS_THM

WTNV115A
·
SURF_ETAT_SATU

WTNV116A

CAM_CLAY_THM

WTNV117A

SURF_ETAT_NSAT
·
Handbook of Utilization
U3.14 booklet: Mechanical finite elements 3D
HT-66/02/003/A

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Titrate:
Modeling 3d_HM, 3d_HHM, 3d_THM, 3d_THH, 3d_THHM

Date:
04/11/02
Author (S):
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:
U3.14.07-C1 Page:
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4 Loadings
supported

4.1
AFFE_CHAR_MECA


All elements
Remarks
of this note

DDL_IMPO
SSNV134C
FACE_IMPO
SSNV134C
LIAISON_DDL
·
LIAISON_OBLIQUE
·
LIAISON_GROUP
·
LIAISON_UNIF
·
LIAISON_SOLIDE
·
LIAISON_ELEM
·
LIAISON_CHAM_NO
·
PESANTEUR
·
ROTATION

FORCE_NODALE
·
FORCE_FACE

FORCE_ARETE

FORCE_INTERN
·
PRES_REP
SSNV134C
EPSI_INIT

FLUX_THM_REP
WTNV114C
PRES_CALCULEE
·
EPSA_CALCULEE


Handbook of Utilization
U3.14 booklet: Mechanical finite elements 3D
HT-66/02/003/A

Code_Aster ®
Version
6.3
Titrate:
Modeling 3d_HM, 3d_HHM, 3d_THM, 3d_THH, 3d_THHM

Date:
04/11/02
Author (S):
C. CHAVANT Key
:
U3.14.07-C1 Page:
5/6

4.2
AFFE_CHAR_MECA_F


All elements
Remarks
of this note

DDL_IMPO
·
FACE_IMPO
·
LIAISON_DDL
·
LIAISON_OBLIQUE
·
LIAISON_GROUP
·
LIAISON_UNIF
·
LIAISON_SOLIDE
·
FORCE_NODALE
·
FORCE_FACE
·
FORCE_ARETE

FORCE_INTERN
·
PRES_REP
·
EPSI_INIT

FLUX_THM_REP
·

5 Possibilities
non-linear

5.1
STAT_NON_LINE

COMP_INCR
RELATION
3d_HM
3d_HHM
3d_THM
3d_THH
3d_THHM


KIT_HM
SSNV13




4C

KIT_HHM
WTNV112B



KIT_THM

WTNV109A


KIT_THH
·

KIT_THHM
·

6
Elementary calculations of matrices

OPTIONS Remarks

“RIGI_MECA_TANG”
·
“FULL_MECA”
·
“RAPH_MECA”
·
“FORC_NODA”
· If
FORC_NODA is called from
REAC_NODA
only the terms of mechanics are
calculated
Handbook of Utilization
U3.14 booklet: Mechanical finite elements 3D
HT-66/02/003/A

Code_Aster ®
Version
6.3
Titrate:
Modeling 3d_HM, 3d_HHM, 3d_THM, 3d_THH, 3d_THHM

Date:
04/11/02
Author (S):
C. CHAVANT Key
:
U3.14.07-C1 Page:
6/6

7
Postprocessing of calculation

7.1 Options
CALC_ELEM

OPTIONS
All elements
Remarks
of this note

“SIEF_ELNO_ELGA”
SSNV134C
“VARI_ELNO_ELGA”
·
“EPSI_ELNO_DEPL”


“EPSI_ELGA_DEPL”



7.2 Options
CALC_NO


All elements
Remarks
of this note

“FORC_NODA”
· If
FORC_NODA is called from
REAC_NODA
only the terms of mechanics are
calculated
“REAC_NODA”
·
Only the terms of mechanics are
calculated

Handbook of Utilization
U3.14 booklet: Mechanical finite elements 3D
HT-66/02/003/A

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