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Titrate:
Operator REST_SPEC_PHYS


Date:
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Author (S):
A. Key ADOBES
:
U4.63.22-E Page
: 1/6

Organization (S): EDF-R & D/MFTT
Handbook of Utilization
U4.6- booklet: Elementary matrices/Vecteurs 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 grid.

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, constraints or forces nodal. The produced result is a concept of
tabl_intsp type.
Handbook of Utilization
U4.6- booklet: Elementary matrices/Vecteurs and assembly
HT-66/05/004/A

Code_Aster ®
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7.4
Titrate:
Operator REST_SPEC_PHYS


Date:
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Author (S):
A. Key ADOBES
:
U4.63.22-E Page
: 2/6

2 Syntax

tinsp [tabl_intsp] = REST_SPEC_PHYS
(



/
BASE_ELAS_FLUI
=
baseflui
, [melasflu]

/
MODE_MECA
=
basemeca
, [mode_meca]



/NUME_ORDRE = l_nuor
,
[l_I]

/
BANDE
=
(f1,
f2)
, [l_R]




INTE_SPEC_GENE
=
repmoda
,
[tabl_intsp]




NOEUD
=
l_no_rep
, [l_noeud]




MAILLE
=
l_ma_rep
, [l_maille]



NOM_CHAM
=
/
“DEPL”
/
“VITE”
/
“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
(






NOEUD
=
l_no
,
[l_noeud]





NOM_CMP =
l_ncmp
,
[l_TXM]






)


MOUVEMENT
=
/
“ABSOLU”
[DEFAUT]
/
“RELATIF”
/
“DIFFERENTIEL”
,



OPTION
=
/
“DIAG_DIAG”
[DEFAUT]
/
“DIAG_TOUT”
/
“TOUT_DIAG”
/
“TOUT_TOUT”
,



TITER
=
titrate
, [TXM]












);
Handbook of Utilization
U4.6- booklet: Elementary matrices/Vecteurs and assembly
HT-66/05/004/A

Code_Aster ®
Version
7.4
Titrate:
Operator REST_SPEC_PHYS


Date:
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Author (S):
A. Key ADOBES
:
U4.63.22-E Page
: 3/6

3 Operands

3.1 Operands
BASE_ELAS_FLUI and MODE_MECA

/BASE_ELAS_FLUI = baseflui

Concept of the melasflu type produces by the operator CALC_FLUI_STRU [U4.66.02], who 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 mode_meca type produces by 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 constraints of a telegraphic structure
subjected to the action of a flow.
This calculation case is determined by the data of a concept of the melasflu type under
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 operand NOM_CHAM. The data complementary to one
concept of the mode_meca type under operand MODE_MECA becomes obligatory then, so
to define the field of the modal constraints in the nodes of the structure.
The modal constraints are calculated upstream by operator CALC_ELEM [U4.81.01],
option “SIPO_ELNO_DEPL”, using the normalized modal deformations. The operator
NORM_MODE [U4.52.11] makes it possible to carry out the standardization of the deformations beforehand
modal.

3.2 Operands
NUME_ORDRE and BANDE

These operands should be used only if the base on which is broken up
modal answer is defined by a concept of the mode_meca type.


/NUME_ORDRE = l_nuor

List sequence numbers of the modes of the concept of the mode_meca type which are indeed
taken into account for the calculation of the physical answer.


/BANDE = (f1, f2)

The modes which are taken into account for the calculation of the physical answer are the modes of
concept of the mode_meca type whose frequency is in the tape defined by (f1 f2).

3.3 Operand
INTE_SPEC_GENE

INTE_SPEC_GENE = repmoda

Concept of the tabl_intsp type produces by 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.
Handbook of Utilization
U4.6- booklet: Elementary matrices/Vecteurs and assembly
HT-66/05/004/A

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3.4 Operand
NOEUD

NOEUD = l_no_rep

List nodes of the grid where the interspectres of physical answer are calculated.

3.5 Operand
MAILLE


MAILLE = l_ma_rep

List meshs of the grid 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 “VITE” 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 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 fields “DEPL”, “VITE” 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 mode_stat type produces by the operator MODE_STATIQUE [U4.52.14], who 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.

NOEUD = l_no

List nodes where the excitation is applied.
Handbook of Utilization
U4.6- booklet: Elementary matrices/Vecteurs and assembly
HT-66/05/004/A

Code_Aster ®
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Titrate:
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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: “NEAR”, “DRZ”, “PHI”…
In all the cases, one needs as many arguments under operand NOEUD under the operand
NOM_CMP.
For the fluid sources, it is the component “PRES” which is excited.

3.10 Operand
MOUVEMENT


MOUVEMENT = “ABSOLU” or “RELATIF” or “DIFFERENTIEL”

Indicator characterizing the physical answer to calculate, in the case of a seismic calculation
multi-supports: absolute response (“ABSOLU”) by defect, dynamic contribution (“RELATIF”) or
differential (“DIFFERENTIEL”) 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
TITER


TITER = title

Argument of the text type defining the title attached to the concept tabl_intsp at output.

Handbook of Utilization
U4.6- booklet: Elementary matrices/Vecteurs and assembly
HT-66/05/004/A

Code_Aster ®
Version
7.4
Titrate:
Operator REST_SPEC_PHYS


Date:
27/01/05
Author (S):
A. Key ADOBES
:
U4.63.22-E Page
: 6/6

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Handbook of Utilization
U4.6- booklet: Elementary matrices/Vecteurs and assembly
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