Code_Aster
®
Version
7.4
Titrate:
Operator
REST_SPEC_PHYS
Date:
27/01/05
Author (S):
A. ADOBES
Key
:
U4.63.22-E
Page
:
1/6
Instruction manual
U4.6- booklet: Elementary matrices/Vectors and assembly
HT-66/05/004/A
Organization (S):
EDF-R & D/MFTT
Instruction manual
U4.6- booklet: Elementary matrices/Vectors and assembly
Document: U4.63.22
Operator
REST_SPEC_PHYS
1 Goal
To calculate the response of a structure in the physical base. Calculation is carried out from one
interspectre of modal answer, in certain selected nodes of the mesh.
The operator carries out calculation, with four alternatives, of the spectra of response in the physical base.
The user can choose a response in displacements, speeds, accelerations and under some
conditions in generalized efforts, stresses or forces nodal. The produced result is a concept of
type
tabl_intsp
.
Code_Aster
®
Version
7.4
Titrate:
Operator
REST_SPEC_PHYS
Date:
27/01/05
Author (S):
A. ADOBES
Key
:
U4.63.22-E
Page
:
2/6
Instruction manual
U4.6- booklet: Elementary matrices/Vectors and assembly
HT-66/05/004/A
2 Syntax
tinsp [tabl_intsp] = REST_SPEC_PHYS
(
/
BASE_ELAS_FLUI
=
baseflui
, [melasflu]
/
MODE_MECA
=
basemeca
, [mode_meca]
/
NUME_ORDRE =
l_nuor
,
[l_I]
/
BANDAGE
=
(f1,
f2)
, [l_R]
INTE_SPEC_GENE
=
repmoda
,
[tabl_intsp]
NODE
=
l_no_rep
, [l_noeud]
NET
=
l_ma_rep
, [l_maille]
NOM_CHAM
=
/
“DEPL”
/
“QUICKLY”
/
“ACCE”
/
“EFGE_ELNO_DEPL”
/
“SIPO_ELNO_DEPL”
/
“SIGM_ELNO_DEPL”
/
“FORC_NODA”
,
NOM_CMP =
/
“DX”
/
“DY”
/
“DZ”
/
“SMFY”
/
“SMFZ”
,
MODE_STAT
=
modestat
, [mode_stat]
EXCIT
= _F
(
NODE
=
l_no
,
[l_noeud]
NOM_CMP =
l_ncmp
,
[l_TXM]
)
MOVEMENT
=
/
“ABSOLUTE”
[DEFECT]
/
“RELATIVE”
/
“DIFFERENTIAL”
,
OPTION
=
/
“DIAG_DIAG”
[DEFECT]
/
“DIAG_TOUT”
/
“TOUT_DIAG”
/
“TOUT_TOUT”
,
TITRATE
=
titrate
, [TXM]
);
Code_Aster
®
Version
7.4
Titrate:
Operator
REST_SPEC_PHYS
Date:
27/01/05
Author (S):
A. ADOBES
Key
:
U4.63.22-E
Page
:
3/6
Instruction manual
U4.6- booklet: Elementary matrices/Vectors and assembly
HT-66/05/004/A
3 Operands
3.1 Operands
BASE_ELAS_FLUI
and
MODE_MECA
/BASE_ELAS_FLUI = baseflui
Concept of the type
melasflu
product by the operator
CALC_FLUI_STRU
[U4.66.02], which defines
a whole of modal bases associated the various rates of flow of the fluid.
The modal response of the structure for a rate of flow considered is
broken up on the basis corresponding at this speed.
/MODE_MECA = basemeca
Concept of the type
mode_meca
product by the operator
MODE_ITER_INV
[U4.52.04] or
MODE_ITER_SIMULT
[U4.52.03], which defines the base on which the answer is broken up
modal.
Note:
Operands
BASE_ELAS_FLUI
and
MODE_MECA
can be used simultaneously
if one wishes to calculate a response in stresses of a telegraphic structure
subjected to the action of a flow.
This calculation case is determined by the data of a concept of the type
melasflu
under
the operand
BASE_ELAS_FLUI
, defining the modal bases of the structure in
various rates of flow, and the choice of the physical field of answer
“SIPO_ELNO_DEPL”
under the operand
NOM_CHAM
. The data complementary to one
concept of the type
mode_meca
under the operand
MODE_MECA
becomes obligatory then, so
to define the field of the modal stresses in the nodes of the structure.
The modal stresses are calculated upstream by the operator
CALC_ELEM
[U4.81.01],
option
“SIPO_ELNO_DEPL”
, using the normalized modal deformations. The operator
NORM_MODE
[U4.52.11] allows to carry out the standardization of the deformations beforehand
modal.
3.2 Operands
NUME_ORDRE
and
BANDAGE
These operands should be used only if the base on which is broken up
modal answer is defined by a concept of the type
mode_meca
.
/NUME_ORDRE = l_nuor
List sequence numbers of the modes of the concept of the type
mode_meca
who are indeed
taken into account for the calculation of the physical answer.
/TAPE = (f1, f2)
The modes which are taken into account for the calculation of the physical answer are the modes of
concept of the type
mode_meca
whose frequency is in the tape defined by
(f1 f2)
.
3.3 Operand
INTE_SPEC_GENE
INTE_SPEC_GENE = repmoda
Concept of the type
tabl_intsp
product by the operator
DYNA_SPEC_MODAL
[U4.53.23] or
DYNA_ALEA_MODAL
[U4.53.22], which defines the interspectres modal answer, i.e them
interspectres of generalized displacements.
Code_Aster
®
Version
7.4
Titrate:
Operator
REST_SPEC_PHYS
Date:
27/01/05
Author (S):
A. ADOBES
Key
:
U4.63.22-E
Page
:
4/6
Instruction manual
U4.6- booklet: Elementary matrices/Vectors and assembly
HT-66/05/004/A
3.4 Operand
NODE
NODE = l_no_rep
List nodes of the mesh where the interspectres of physical answer are calculated.
3.5 Operand
NET
NET = l_ma_rep
List meshs of the mesh where the interspectres of physical answer are calculated, in the case
where the field of answer is a field with the elements.
3.6 Operand
NOM_CHAM
NOM_CHAM =
“DEPL”
or
“QUICKLY”
or
“ACCE”
or
“EFGE_ELNO_DEPL”
or
“SIPO_ELNO_DEPL”
or
“SIGM_ELNO_DEPL”
or
“FORC_NODA”
Name of the physical field of answer to calculate.
Note:
The choice of the physical field of answer
“SIPO_ELNO_DEPL”
for a telegraphic structure under
flow requires the simultaneous use of the operands
BASE_ELAS_FLUI
and
MODE_MECA
(cf [§3.1]).
3.7 Operand
NOM_CMP
NOM_CMP = “DX”
or
“DY”
or
“DZ”
or
“SMFY”
or
“SMFZ”
Names of the components of the physical field of answer having to be actually calculated.
Note:
Components
“DX”
,
“DY”
, and
“DZ”
are valid for the fields
“DEPL”
,
“QUICKLY”
or
“ACCE”
. Components
“SMFY”
and
“SMFZ”
are valid for the field
“SIPO_ELNO_DEPL”
.
3.8 Operand
MODE_STAT
MODE_STAT = modestat
Concept of the type
mode_stat
product by the operator
MODE_STATIQUE
[U4.52.14], which defines them
static modes taken into account in the case of a seismic calculation multi-supports where the excitation
fact on the DDL.
3.9 Key word
EXCIT
EXCIT
Key word factor allowing to define the DDL to which the excitation is applied, in the case
of a seismic calculation multi-supports.
NODE = l_no
List nodes where the excitation is applied.
Code_Aster
®
Version
7.4
Titrate:
Operator
REST_SPEC_PHYS
Date:
27/01/05
Author (S):
A. ADOBES
Key
:
U4.63.22-E
Page
:
5/6
Instruction manual
U4.6- booklet: Elementary matrices/Vectors and assembly
HT-66/05/004/A
NOM_CMP = l_ncmp
List components to which the excitation is applied.
Note:
These components must correspond to degrees of freedom of the nodes of supports.
Example:
“CLOSE”
,
“DRZ”
,
“PHI”
…
In all the cases, one needs as many arguments under the operand
NODE
that under the operand
NOM_CMP
.
For the fluid sources, it is the component
“CLOSE”
who is excited.
3.10 Operand
MOVEMENT
MOVEMENT = “ABSOLUTE”
or
“RELATIVE”
or
“DIFFERENTIAL”
Indicator characterizing the physical answer to calculate, in the case of a seismic calculation
multi-supports: absolute answer (
“ABSOLUTE”
) by defect, dynamic contribution (
“RELATIVE”
) or
differential (
“DIFFERENTIAL”
) of the answer.
3.11 Operand
OPTION
OPTION = “DIAG_DIAG”
or
“DIAG_TOUT”
or
“TOUT_DIAG”
or
“TOUT_TOUT”
Indicator specifying the choice of calculation to be realized:
·
calculation of the autospectres to the nodes by means of the modal autospectres;
·
calculation of the autospectres to the nodes by means of all modal interspectres;
·
calculation of all interspectres to the nodes by means of the modal autospectres;
·
calculation of all interspectres to the nodes by means of all modal interspectres.
Note:
If the modal answer were calculated by
DYNA_SPEC_MODAL
[U4.53.23], the choice
of calculation must be coherent with that retained upstream in this operator. Indeed, them
options
“DIAG_TOUT”
or
“TOUT_TOUT”
cannot be carried out if one chose
“DIAG”
in
DYNA_SPEC_MODAL
[U4.53.23].
The choice by defect is thus
“DIAG_DIAG”
, which corresponds to the simplest calculation case
realizable whatever the choice selected upstream.
3.12 Operand
TITRATE
TITRATE = title
Argument of the text type defining the title attached to the concept tabl_intsp at exit.
Code_Aster
®
Version
7.4
Titrate:
Operator
REST_SPEC_PHYS
Date:
27/01/05
Author (S):
A. ADOBES
Key
:
U4.63.22-E
Page
:
6/6
Instruction manual
U4.6- booklet: Elementary matrices/Vectors and assembly
HT-66/05/004/A
Intentionally white left page.