Operator DEFI_OBSTACLE

Code_Aster

Version

7.4

Titrate:

Operator

DEFI_OBSTACLE

Date:

02/02/05

Author (S):

S. LAMARCHE,

Fe WAECKEL, G. JACQUART

Key

U4.44.21-G

Page

1/6

Instruction manual

U4.4- booklet: Modeling

HT-66/05/004/A

Organization (S):

EDF-R & D/AMA, SINETICS, EDF-Pole Industry/CNPE of Tricastin

Instruction manual
U4.4- booklet: Modeling
U4.44.21 document

Operator

DEFI_OBSTACLE

1 Goal

To define the geometry of the places of shocks of a telegraphic structure. These places are defined in a plan
perpendicular with the structure modelized by beams POU_D_T and POU_D_E. It is then used by
DYNA_TRAN_MODAL [U4.53.21] for the study of the response of a structure whose displacements are

limited by the presence of this obstacle. One can also define the initial section of a structure
which one will study progressive wear. In this last case, the concept will be used by MODI_OBSTACLE

[U4.44.22].

Product a concept of the type

obstacle

Code_Aster

Version

7.4

Titrate:

Operator

DEFI_OBSTACLE

Date:

02/02/05

Author (S):

S. LAMARCHE,

Fe WAECKEL, G. JACQUART

Key

U4.44.21-G

Page

2/6

Instruction manual

U4.4- booklet: Modeling

HT-66/05/004/A

2 Syntax

obstacle = DEFI_OBSTACLE

(

TYPE

“CIRCLE”,

[DEFECT]

“PLAN_Y”,

“PLAN_Z”,

“BI_CERCLE”,

“BI_CERC_INT”,

“BI_PLAN_Y”,

“BI_PLAN_Z”,

“DISCRETE”,

“CRAYON_900”,

“CRAYON_1300”,

“GUID_A_CARTE_900”,

“GUID_A_GCONT_900”,

“GUID_A_GCOMB_900”,

“GUID_B_CARTE_900”,

“GUID_B_GCONT_900”,

“GUID_B_GCOMB_900”,

“GUID_C_CARTE_900”,

“GUID_C_GCONT_900”,

“GUID_C_GCOMB_900”,

“GUID_D_CARTE_900”,

“GUID_D_GCONT_900”,

“GUID_D_GCOMB_900”,

“GUID_E_CARTE_900”,

“GUID_E_GCONT_900”,

“GUID_E_GCOMB_900”,

“GUID_F_CARTE_900”,

“GUID_F_GCONT_900”,

“GUID_F_GCOMB_900”,

“GUID_A_CARSP_900”,

“GUID_B_CARSP_900”,

“GUID_C_CARSP_900”,

“GUID_D_CARSP_900”,

“GUID_E_CARSP_900”,

“GUID_F_CARSP_900”,

“GUID_A_CARTE_1300”,

“GUID_A_GCONT_1300”,

“GUID_A_GCOMB_1300”,

“GUID_B_CARTE_1300”,

“GUID_B_GCONT_1300”,

“GUID_B_GCOMB_1300”,

“GUID_C_CARTE_1300”,

“GUID_C_GCONT_1300”,

“GUID_C_GCOMB_1300”,

“GUID_D_CARTE_1300”,

“GUID_D_GCONT_1300”,

“GUID_D_GCOMB_1300”,

“GUID_E_CARTE_1300”,

“GUID_E_GCONT_1300”,

“GUID_E_GCOMB_1300”,

“GUID_F_CARTE_1300”,

“GUID_F_GCONT_1300”,

“GUID_F_GCOMB_1300”,

“GUID_A_CARSP_1300”,

“GUID_B_CARSP_1300”,

“GUID_C_CARSP_1300”,

“GUID_D_CARSP_1300”,

“GUID_E_CARSP_1300”,

“GUID_F_CARSP_1300”,

VALE =

thetar, [l_R]

VERIF

= “FIRM”,

);

Code_Aster

Version

7.4

Titrate:

Operator

DEFI_OBSTACLE

Date:

02/02/05

Author (S):

S. LAMARCHE,

Fe WAECKEL, G. JACQUART

Key

U4.44.21-G

Page

3/6

Instruction manual

U4.4- booklet: Modeling

HT-66/05/004/A

3 Operands

3.1 Operand

TYPE

TYPE = typ

The operand

TYPE

allows to give:

the form wraps play in the connection of shock by a text among the following:

PLAN_Y

PLAN_Z

RING

DISCRETE

BI_PLAN_Y

BI_PLAN_Z

BI_CERCLE

and

BI_CERC_INT

;

the initial section of structures such as the pencils

CRAYON_ *

and them guides

GUID_ * _ * _ *

control rods of the ITEMS 900 and 1300 MW.

Obstacles of the type

PLAN_Y

PLAN_Z

RING

and

DISCRETE

define the geometry of

places of shock enters a mobile structure and an indeformable obstacle. They are traced
below [Figure 3.1-a] according to the selected type.

Zloc

Yloc

play

Zloc

Yloc

PLAN_Y

PLAN_Z

RING

Appear 3.1-a

The value of the play and the local reference mark (Xloc, Yloc, Zloc) will be defined in the moment of the use
obstacle (see operator

DYNA_TRAN_MODAL

[U4.53.21]). The origin of this reference mark being it

place of the telegraphic structure considered.

In the case of the obstacle

TYPE

= `

DISCRET'

, the curve should be specified defining it

contour and play simultaneously, using the key word

VALE

Code_Aster

Version

7.4

Titrate:

Operator

DEFI_OBSTACLE

Date:

02/02/05

Author (S):

S. LAMARCHE,

Fe WAECKEL, G. JACQUART

Key

U4.44.21-G

Page

4/6

Instruction manual

U4.4- booklet: Modeling

HT-66/05/004/A

Types

BI_PLAN_Y

BI_PLAN_Z,

BI_CERCLE

and

BI_CERC_INT

allow to define them

possible places of contact of the telegraphic structure between two nodes NO1 and pertaining NO2
each one with a mobile structure. Geometries of the connections of plane contact on plan (or
ring on circle) are described on the figure [Figure 3.1-b] below.

Zloc

play

Yloc

BI_PLAN_Y

N02

N01

Zloc

Yloc

BI_PLAN_Z

N01

play

N02

Yloc

Zloc

BI_CERCLE

N01

play

N02

NO1

NO2

Zloc

Yloc

BI_CERC_INT

Appear 3.1-b

The value thicknesses of matter surrounding the nodes of shock (D1 and D2 for one
obstacle of the type

BI_PLAN_ *

, R1 and R2 for an obstacle of the type

BI_CERCLE

BI_CERC_INT

) as well as the local reference mark (Xloc, Yloc, Zloc) are defined in the moment of

the use of the obstacle, i.e. in the operator

DYNA_TRAN_MODAL

[U4.53.21].

Several initial forms, in particular for the study of the vibrations of the bunches of
order, are defined. They correspond with the pencil of the various bunches of
order and from their guidance.

Code_Aster

Version

7.4

Titrate:

Operator

DEFI_OBSTACLE

Date:

02/02/05

Author (S):

S. LAMARCHE,

Fe WAECKEL, G. JACQUART

Key

U4.44.21-G

Page

5/6

Instruction manual

U4.4- booklet: Modeling

HT-66/05/004/A

The STANDARD operand then makes it possible to define the geometry of a pencil of control rod

nine of type ITEM 900MW: `CRAYON_900' or of type REP1300MW: “CRAYON_1300”;

and that of the various parts of a guidance of bunch nine: type starting with GUID

(GUID_ * _ * _ *). The three indications which follow GUID respectively make it possible to define:

the type of pencil of bunch - of A with F - which is inside (the channel of guidance is
different for each type of pencil);

the part of the guidance to which the obstacle belongs: CARD if discontinuous guidance;
GCONT if continuous guidance; GCOMB if guidance combustible; CARSP if card with play

increased;

and the type of jet engine: 900 if ITEM 900MW or 1300 if ITEM 1300MW.

3.2 Operands

VALE/VERIF

VALE = thetar

In the case of the DISCRETE obstacle it is necessary to specify the curve defining contour and the play

at the same time, using key word VALE.

thetar is the list of realities making it possible to describe the contour of the obstacle of the DISCRETE type in

polar co-ordinates. One describes the obstacle like a curve planes into polar while giving
couples of values, the first being the angle in degrees of 0 with 360°, the second the radius
[Figure 3.2-a].

Appear 3.2-a

VERIF = “FIRM”

Key word allowing to check if the curve given into polar is well closed.

4 Phase

of execution

It is checked that the number of values behind VALE is even and that the curve defined in co-ordinates

polar is well closed (operand VERIF = “FIRM”).

VALE

= (0.0, 0.00086,

30.0,

0.00086,

90.0,

0.001,

150.0,

0.001,

210.0,

0.001,

270.0,

0.001,

330.0,

0.001,

360.0,

0.00086,)