Code_Aster ®
Version
7.4
Titrate:
Operator POST_USURE


Date:
19/05/05
Author (S):
S. LAMARCHE, E. BOYERE, D. BOSSELUT Key
:
U4.84.05-F Page
: 1/18

Organization (S): EDF-R & D/AMA
Handbook of Utilization
U4.8- booklet: Dedicated Post processing and analyzes
Document: U4.84.05

Operator POST_USURE

1 Goal

To calculate volume and depth of wear according to the power of wear.

The power of wear is given or calculated by operator DYNA_TRAN_MODAL [U4.53.21]. It is necessary
to provide a law of wear, a geometry of contact and a list of moments.

The figure of play can be cut out to calculate the sizes related to wear by sectors. In it
case, the table created can be used by operator MODI_OBSTACLE [U4.44.22] to calculate
evolution of the figures of plays due to wear.

Product a structure of data of the tabl_post_usur type.

Handbook of Utilization
U4.8- booklet: Dedicated Post processing and analyzes
HT-66/05/004/A

Code_Aster ®
Version
7.4
Titrate:
Operator POST_USURE


Date:
19/05/05
Author (S):
S. LAMARCHE, E. BOYERE, D. BOSSELUT Key
:
U4.84.05-F Page
: 2/18

2 Syntax
tresu [tabl_post_usur] = POST_USURE (

resu= tresu,


# definition of Noeud of impact or a power of wear



/RESU_GENE = tg,
[tran_gene]






NOEUD

=
noeu,
[node]





INST_INIT
=/0.,







[DEFAUT]










/t0,






[R]





INST_FIN

= T1,








[R]





NB_BLOC =/1,
[DEFAUT]










/Nb,






[I]




/PUIS_USURE
= been able,








[R]

# definition of the law of wear



/LOI_USURE = “ARCHARD”,





[KN]





/MOBILE
= _F (












COEF_USURE = k_t, [R]











),






OBSTACLE = _F (












COEF_USURE = k_o, [R]











),





/
MATER_USURE =
“mat1_mat2”,
[KN]






USURE_OBST =/“NOT”,
[DEFAUT]












/“OUI”,

# division the figure of play in sectors





/SECTEUR
=
_F (







COEF_USURE_MOBILE
=
k_t, [R]







COEF_USURE_OBST = k_o
,
[R]








CONTACT =
“standard”, [kN]







ANGL_INIT
=
ang_i,
[R]








ANGL_FIN
=
ang_f,
[R]










),




/
LOI_USURE
=
“KWU_EPRI”, [kN]





/MOBILE
= _F (












COEF_FNOR = K1_T, [R]












COEF_VTAN = K2_T, [R]












COEF_USURE= K3_T, [R]












COEF_K
=
/k_t, [R]

















/5., [DEFAUT]












COEF_C
=
/c_t, [R]

















/10., [DEFAUT]











),
Handbook of Utilization
U4.8- booklet: Dedicated Post processing and analyzes
HT-66/05/004/A

Code_Aster ®
Version
7.4
Titrate:
Operator POST_USURE


Date:
19/05/05
Author (S):
S. LAMARCHE, E. BOYERE, D. BOSSELUT Key
:
U4.84.05-F Page
: 3/18







OBSTACLE = _F (












COEF_FNOR = K1_O, [R]












COEF_VTAN = K2_O, [R]












COEF_USURE= K3_O, [R]












COEF_K
=
/k_o,
[R]
/
5.,
[DEFAUT]












COEF_C
=
/c_o,
[R]
/
10.,
[DEFAUT]











)





/
MATER_USURE =
“mat1_mat2”,
[KN]






USURE_OBST =/“NOT”,
[DEFAUT]








/
“OUI”,






FNOR_MAXI = fn,








[R]





VTAN_MAXI = vg,








[R]





/
LOI_USURE
=
“EDF_MZ”,
[KN]





/MOBILE
= _F (












COEF_USURE=/a_t,
[R]


/
1.E-13, [DEFAUT]












COEF_B =/b_t,
[R]


/
1.2,
[DEFAUT]












COEF_N =/n_t,
[R]
















/2.44E-08,












COEF_S =/s_t,
[R]
















/1.14E-16,











),






OBSTACLE = _F (












COEF_USURE=/a_o,
[R]


/
1.E-13, [DEFAUT]












COEF_B =/b_o,
[R]


/
1.2,
[DEFAUT]












COEF_N =/n_o,
[R]
















/2.44E-08,












COEF_S =/s_o,
[R]
















/1.14E-16,











),





/
MATER_USURE =
“mat1_mat2”,
[KN]






USURE_OBST =/“NOT”,
[DEFAUT]








/
“OUI”,

# definition of the moments of calculation depth of wear




/
INST =
l_inst, [l_R]
/
LIST_INST
=
linst,
[listr8]

/
COEF_INST
=
coeff,
[R]

# definition of a title



TITER
= “montitre”, [l_Kn]

#
impression
information



INFO =/1,










[I]
/
2,
[DEFAUT]
Handbook of Utilization
U4.8- booklet: Dedicated Post processing and analyzes
HT-66/05/004/A

Code_Aster ®
Version
7.4
Titrate:
Operator POST_USURE


Date:
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Author (S):
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:
U4.84.05-F Page
: 4/18


# definition of the table to enrich in the case of calculation with evolution #
plays



ETAT_INIT
= _F (





TABL_USURE
=
tresu,
[tabl_post_usur]




INST_INIT

=
tt,








[R]








),


# definition of the contact



/CONTACT = “GRAPPE_ALESAGE”,



[KN]






RAYON_MOBILE
= r_t, [R]






RAYON_OBST


= r_o, [R]





/CONTACT =
“GRAPPE_1_ENCO”,



[KN]





/CONTACT =
“GRAPPE_2_ENCO”,



[KN]






/CONTACT =
“TUBE_BAV”,





[KN]





RAYON_MOBILE
= r_t
,






[R]





LARGEUR_OBST
= l_o
,






[R]





ANGL_INCLI


= Eng,
[R]





/CONTACT =
“TUBE_ALESAGE”,



[KN]






RAYON_MOBILE
= r_t, [R]





RAYON_OBST = r_o,






[R]





LARGEUR_OBST
= l_o
,






[R]





ANGL_INCLI


= Eng,
[R]





/CONTACT =
“TUBE_3_ENCO”,




[KN]






RAYON_MOBILE
= r_t, [R]





RAYON_OBST = r_o,






[R]





LARGEUR_OBST
= l_o
,






[R]






ANGL_ISTHME

= angli,
[R]





ANGL_INCLI


= Eng,
[R]





/CONTACT =
“TUBE_4_ENCO”,




[KN]






RAYON_MOBILE
= r_t, [R]





RAYON_OBST = r_o,






[R]





LARGEUR_OBST
= l_o
,






[R]






ANGL_ISTHME

= angli,
[R]





ANGL_INCLI


= Eng,
[R]





/
CONTACT =
“TUBE_TUBE”,
[KN]






RAYON_MOBILE
=
r_t, [R]
ANGL_INCLI
=
Eng,
[R]

# loading of a new tube
/
TUBE_NEUF





=
“OUI”
[DEFAUT]






)
Handbook of Utilization
U4.8- booklet: Dedicated Post processing and analyzes
HT-66/05/004/A

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Titrate:
Operator POST_USURE


Date:
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:
U4.84.05-F Page
: 5/18

3 Operands

We draw here the attention to some delicate points of the use of POST_USURE.

· The result of POST_USURE does not depend on the final mechanical state of calculation but of all
the history of the shocks. It is thus very important to take into account every moment of
calculations, i.e. not to ask selective filing in DYNA_TRAN_MODAL.
· The result of POST_USURE is very sensitive to the parameters of calculations, in particular with
richness of the modal base, and with the step of time. It is thus strongly advised to test
various modal bases (increasingly rich) and various steps of time (more and more
small). For example, for the step of time, one will be able to test various values spaced from one
factor 10, then 2, in order to determine a range of step of time over which the result is
stable.
· In the case of a vibratory calculation, one can have a result which is not representative of
real wear if the experiment is not long enough. In the same way, in the case of excitations
generated by chance, it is advised to carry out several hard copies before drawing from
conclusions of dimensioning.

3.1
Node of impact and power of wear

3.1.1 Operand
PUIS_USURE

PUIS_USURE = been able

The power of wear is:

· exit of the result of a transitory calculation by modal recombination, produced by the operator
DYNA_TRAN_MODAL [U4.53.21] (operands following),
· or given by the user who uses operand PUIS_USURE then.

3.1.2 Operand
RESU_GENE

RESU_GENE = tg

Result of a transitory calculation by modal recombination, produced by the operator
DYNA_TRAN_MODAL [U4.53.21].

3.1.3 Operand
NOEUD

NOEUD = noeu

Definition of the node of shock post-to be treated.

3.1.4 Operand
INST_INIT

INST_INIT = t0

Moment of beginning of the average of the signals (cf [§4]).
(t0 = 0. default value).

3.1.5 Operand
INST_FIN

INST_FIN = T1

Moment of end of the average of the signals.

3.1.6 Operand
NB_BLOC

NB_BLOC = Nb

A number of temporal blocks of division the interval [T,] for the average of the signals
0 T1
(1 per defect).
Handbook of Utilization
U4.8- booklet: Dedicated Post processing and analyzes
HT-66/05/004/A

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Titrate:
Operator POST_USURE


Date:
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Author (S):
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:
U4.84.05-F Page
: 6/18

3.2 Law
of wear
“ARCHARD” [bib5]

3.2.1 Operand
LOI_USURE

LOI_USURE = “ARCHARD”

Defines the law of wear in order to calculate worn volume.

The coefficient of wear of the law of Archard [bib5] is provided by the user or is taken in a base
data.

3.2.2 Word
key
MOBILE

MOBILE


Definition of the coefficient of wear of the mobile.

3.2.2.1 Operand
COEF_USURE

COEF_USURE
= k_t

Value of the coefficient of wear of the mobile.

3.2.3 Word
key
OBSTACLE

OBSTACLE


Definition of the coefficient of wear of the obstacle.

3.2.3.1 Operand
COEF_USURE

COEF_USURE
= k_o

Value of the coefficient of wear of the obstacle.

3.2.4 Operand
MATER_USURE

MATER_USURE = “mat1_mat2”

Recovery of the coefficients in a bank of data:

mat1: being the material of the bunch or tube (the mobile),
mat2: being the material of the obstacle.

3.2.5 Operand
USURE_OBST

USURE_OBST
=
/“OUI”
/
“NON”
[DEFAUT]

Indicate if one wants to take into account the wear of the obstacle.

3.3
Law of wear “KWU_EPRI” [bib5]

3.3.1 Operand
LOI_USURE

LOI_USURE = “KWU_EPRI”

Defines the law of wear in order to calculate worn volume.

3.3.2 Word
key
MOBILE

MOBILE

Definition of the coefficient of wear of the mobile (provided by the user or taken in the base of
data).
Handbook of Utilization
U4.8- booklet: Dedicated Post processing and analyzes
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Titrate:
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Date:
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:
U4.84.05-F Page
: 7/18

3.3.2.1 Operands
COEF_ *

COEF_FNOR
= k1_t

Definition of the dimensional coefficient of correction in the case of pure impacts.

COEF_VTAN
= k2_t

Definition of the dimensional coefficient of correction in the case of slips.

COEF_USURE= k3_t

Definition of the coefficient of wear of reference.

COEF_K
=/k_t
/
5.
[DEFAUT]

Definition of the constant.

COEF_C
=/c_t
/
10.
[DEFAUT]

Definition of the constant.

3.3.3 Word
key
OBSTACLE

OBSTACLE


Definition of the coefficient of wear of the obstacle (provided by the user or taken in the base of
data).

3.3.3.1 Operands
COEF_ *

COEF_FNOR
= k1_o

Definition of the dimensional coefficient of correction in the case of pure impacts.

COEF_VTAN
= k2_o

Definition of the dimensional coefficient of correction in the case of slips.

COEF_USURE= k3_o

Definition of the coefficient of wear of reference.

COEF_K
=/k_o
/
5.
[DEFAUT]

Definition of the constant.

COEF_C
=/c_o
/
10.
[DEFAUT]

Definition of the constant.

3.3.4 Operand
MATER_USURE

MATER_USURE = “mat1_mat2”

Recovery of the coefficients in a bank of data =

mat1 = being the material of the bunch or the tube (the mobile),
mat2 = being the material of the obstacle.
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:
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3.3.5 Operand
USURE_OBST

USURE_OBST
=
/“OUI”
/
“NON”
[DEFAUT]

Indicate if one wants to take into account the wear of the obstacle.

3.3.6 Operands
FNOR_MAXI/VTAN_MAXI

FNOR_MAXI = fn

Definition of the maximum normal force to take into account for the distribution of the 5 classes
for the law of wear KWU_EPRI.

VTAN_MAXI
= vg

Definition the speed of slip maximum to take into account for the distribution of the 5
classes for the law of wear KWU_EPRI.

3.4
Law of wear “EDF_MZ” [bib5]

3.4.1 Operand
LOI_USURE

LOI_USURE = “EDF_MZ”

Defines the law of wear in order to calculate worn volume.

3.4.2 Word
key
MOBILE

MOBILE


Definition of the coefficient of wear of the mobile (provided by the user or taken in the base of
data).

3.4.2.1 Operands
COEF_ *

COEF_USURE
=/a_t
/
1.E-13
[DEFAUT]

Definition of the coefficient of wear A.

COEF_B
=/b_t
/
1.2
[DEFAUT]

Definition of the exhibitor of the power of wear B.

COEF_N
=/n_t
/
2.44E-08
[DEFAUT]

Definition of the rate of deceleration N.

COEF_S
=/S_t
/
1.14E-16
[DEFAUT]

Definition of the threshold S.
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Titrate:
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:
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3.4.3 Word
key
OBSTACLE

OBSTACLE


Definition of the coefficient of wear of the obstacle (provided by the user or taken in the base of
data).

3.4.3.1 Operands
COEF_ *

COEF_USURE
=/a_o
/
1.E-13
[DEFAUT]

Definition of the coefficient of wear A.

COEF_B
=/b_o
/
1.2
[DEFAUT]

Definition of the exhibitor of the power of wear B.

COEF_N
=/n_o
/
2.44E-08
[DEFAUT]

Definition of the rate of deceleration N.

COEF_S
=/s_o
/
1.14E-16
[DEFAUT]

Definition of the threshold S.

3.4.4 Operand
MATER_USURE

MATER_USURE = “mat1_mat2”

Recovery of the coefficients in a bank of data =

mat1 = being the material of the bunch or the tube (the mobile),

mat2 = being the material of the obstacle.

3.4.5 Operand
USURE_OBST

USURE_OBST
=
/“OUI”
/
“NON”
[DEFAUT]

Indicate if one wants to take into account the wear of the obstacle.

Handbook of Utilization
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Titrate:
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Date:
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:
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3.5 Operand
CONTACT

CONTACT
=
géom

Definition of the geometry of contact.

According to the type of contact, various geometrical relations between worn volumes and them
worn depths.

3.5.1 Operand
CONTACT = “GRAPPE_ALESAGE”

The bunch is centered in a boring. The trace of wear has a section in the shape of lunule. Volume
used is brought back to a surface used in a section.

3.5.2 Operand
CONTACT = “GRAPPE_1_ENCO”

The bunch is centered compared to the obstacle.

The card of guidance is made of a notch. Worn volume is brought back to a surface used in one
section.

The coefficients are founded at the same time on the experimental results and those of the return
of experiment. They apply only to the control rods.

3.5.3 Operand
CONTACT = “GRAPPE_2_ENCO”

The bunch is centered compared to the obstacle.

The card of guidance is made of two notches diametrically opposite. Worn volume is
brought back to a surface used in a section.

The coefficients are founded at the same time on the experimental results and those of the return
of experiment. They apply only to the control rods.

3.5.4 Operand
CONTACT = “TUBE_BAV”

Case 1:

The tube is presented vertically, the bar impacts perpendicular to the tube, one supposes that
bar does not wear (USURE_OBST = “NON”).

Case 2:

The bar is presented tilted (operand ANGL_INCLI) compared to the tube, the bar impacts
perpendicular to the tube, it is supposed that the bar does not wear.

Case 3:

The tube is presented vertically, the bar impacts perpendicular to the tube, one takes into account
the wear of the bar (USURE_OBST = “OUI”).

Case 4:

The bar is presented tilted (operand ANGL_INCLI) compared to the tube, the bar impacts
perpendicular to the tube, one takes into account the wear of the bar.
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Titrate:
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:
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3.5.5 Operand
CONTACT = “TUBE_ALESAGE”

Case 1:

The tube is centered perfectly in an animated boring of a pure orbital movement and wears of
uniform manner on all the periphery in contact with the obstacle.

Case 2:

The tube is centered in an animated boring of a movement of impact-slips of the elliptic type
who leads to the formation of traces of wear of the cylindrical type diametrically opposite on the tube
and having a section in the shape of lunule.

Case 3:

The tube, animated of a movement of impact-slips, presents this time a slope by report/ratio
with the support (operand ANGL_INCLI). One obtains two symmetrical traces of wear in the shape of V on
tube.

3.5.6 Operand
CONTACT = “TUBE_3_ENCO”

Case 1:

The initial contact is carried out against an edge of one of the isthmuses of a trifoliate boring. The tube is supposed
centered perfectly compared to its obstacle. The trace of wear does not extend to the entire isthmus.
One does not take into account the wear of the obstacle.

Case 2:

Same assumptions as for case 1 except the position of the tube compared to the obstacle. One supposes
this time that the tube presents an angle of inclination (operand ANGL_INCLI).

3.5.7 Operand
CONTACT = “TUBE_4_ENCO”

Case 1:

The initial contact is carried out against an edge of one of the isthmuses of quadrifoliate boring. It is supposed
tube perfectly centered compared to its obstacle. The trace of wear does not extend to the isthmus all
entirety. One does not take into account the wear of the obstacle.

Case 2:

Same assumptions as for case 1 except the position of the tube compared to the obstacle. One supposes
this time that the tube presents an angle of inclination (operand ANGL_INCLI).

3.5.8 Operand
CONTACT = “TUBE_TUBE”

Following the rupture of a stopped tube, there can be contact between this tube and one of its neighbors. Wear
of the two tubes by accommodation of surfaces in contact led to the creation of two surfaces
plane.
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Titrate:
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:
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: 12/18

3.6 Operand
RAYON_MOBILE

RAYON_MOBILE
=
r_t

Definition of the radius of the mobile (obligatory parameter).

3.7 Operand
RAYON_OBST

RAYON_OBST = r_o

Definition of the radius of the obstacle (parameter obligatory if the wear of the obstacle is taken in
count).

3.8 Operand
LARGEUR_OBST

LARGEUR_OBST
=
l_o

Definition of the width of the obstacle (obligatory parameter for operands TUBE_ *).

3.9 Operand
ANGL_INCLI

ANGL_INCLI = Eng

Definition of the angle of inclination mobile/obstacle (optional parameter = value 0. is taken
by defect).

3.10 Operand
ANGL_ISTME

ANGL_ISTHME = angli

Definition of the angle of the isthmus of the geometry of contact (parameter obligatory for
operands TUBE_3_ENCO and TUBE_4_ENCO).

3.11 Operands
INST/LIST_INST/COEF_INST

INST
=
l_inst

Definition of the moments of calculation in the shape of a list of values.

LIST_INST = linst

Definition of the moments of calculation in the form of a concept of the listr8 type.

COEF_INST = coeff

The moments given are to be multiplied by a coefficient coeff given, which makes it possible to pass
easily units IF with the natural units for a calculation of wear (the month of the year).

3.12 Operand
ETAT_INIT

3.12.1 Key word TABL_USURE

TABL_USURE
=
tresu
[tabl_post_usure]

Definition of the table which one wishes to reactualize.
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3.12.2 Key word INST_INIT

INST_INIT
= tt
[R]

Definition of the moment from which one wishes to reactualize the table.

3.13 Operand
SECTEUR

SECTEUR
=

Definition of the various quantities necessary to cut out the figure of play in sectors
angular.

3.13.1 Key word COEF_USURE_MOBILE

COEF_USURE_MOBILE =
K_t







[R]

Definition of the coefficient of wear of the mobile within the meaning of the law of Archard for the sector.

3.13.2 Key word COEF_USURE_OBST

COEF_USURE_OBST = K_o







[R]

Definition of the coefficient of wear of the obstacle within the meaning of the law of Archard for the sector.

3.13.3 Key word CONTACT

CONTACT = “standard”
[KN]

Definition of the geometry of the contact for the sector considered.

3.13.4 Key word ANGL_INIT

ANGL_INIT
= ang_i
[R]

Definition of the initial angular value of the sector.

3.13.5 Key word ANGL_FIN

ANGL_FIN = ang_f
[R]

Definition of the final angular value of the sector.

3.14 Operands
TITRATE/INFORMATION

TITER = “montitre”

Titrate that one wants to give to the result [U4.03.01].

INFO
=
/1




/2

Level of impression

1
no impression.
2
impression of volumes and depths of wear at the specified moments
Handbook of Utilization
U4.8- booklet: Dedicated Post processing and analyzes
HT-66/05/004/A

Code_Aster ®
Version
7.4
Titrate:
Operator POST_USURE


Date:
19/05/05
Author (S):
S. LAMARCHE, E. BOYERE, D. BOSSELUT Key
:
U4.84.05-F Page
: 14/18

3.15 Count
produced

Command POST_USURE generates a concept of the type counts, whose contents are:

INST:
moments to which the user wishes to know the volume and the depth of wear,

V_usur_tube:
volume used on the level of the tube (for each moment specified by the user),

V_usur_obst:
volume used on the level of the obstacle (for each moment specified by the user),

P_usur_tube:
depth of wear on the level of the tube (for each moment specified by
the user).

Command IMPR_TABLE [U4.91.03] makes it possible to print the results.

Operator MODI_OBSTACLE [U4.44.22] uses a structure of data of the tabl_post_usur type
to take into account the evolution of the shapes of the parts in contact because of wear.

3.16 Loading of a new tube

For the processing of the wear of the control rods, the user with the possibility of taking in
count the change of a tube by a new tube by informing the key word TUBE_NEUF = “OUI”

If the user informs this key word, the operator modifies the values of wear of tube (V_USUR_TUBE,
P_USUR_TUBE, V_USUR_TUBE_SECT, P_USUR_TUBE_SECT, V_USUR_TUBE_CUMU = 0) in
count resulting from POST_USURE.

After restoring of certain values, the user must call upon MODI_OBSTACLE [U4.44.22]
to recompute the new figures of play.

Handbook of Utilization
U4.8- booklet: Dedicated Post processing and analyzes
HT-66/05/004/A

Code_Aster ®
Version
7.4
Titrate:
Operator POST_USURE


Date:
19/05/05
Author (S):
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:
U4.84.05-F Page
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4
Checking - Execution

4.1 Operand
MATER_USURE

It is checked that the material couple provided by the user is in the data base.

4.2 Operands
RESU_GENE/INST_INIT/INST_FIN/NB_BLOC

The value of INST_FIN is compared with the final moment T F of the result

tran_gene. The value of
INST_FIN selected is
(
min T, T
F
1).

If the value of INST_INIT t0 is higher than the value of INST_FIN, one stops in error.

shock
F
Block 1
Block 2
SEUIL_FORCE
INST_INIT
INST_FIN
DUREE_REPOS
Block 1: 1 shock
Block 2: 2 shocks
: signal taken into account in the statistics

Handbook of Utilization
U4.8- booklet: Dedicated Post processing and analyzes
HT-66/05/004/A

Code_Aster ®
Version
7.4
Titrate:
Operator POST_USURE


Date:
19/05/05
Author (S):
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:
U4.84.05-F Page
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5 Example

dateu = DEFI_LIST_REEL (DEBUT = 0.25,
INTERVAL = _F (JUSQU_A = 1., NOMBRE = 20),
_F (JUSQU_A = 5., NOMBRE = 10),
_F (JUSQU_A = 10., NOMBRE = 5)
)
#
us1 = POST_USURE (
PUIS_USURE = 0.312,
LOI_USURE = “ARCHARD”,
NB_BLOC = 4,
MOBILE = _F (COEF_USURE = 30.E-15),
OBSTACLE = _F (COEF_USURE = 20.E-15),
CONTACT = “GRAPPE_1_ENCO”,
RAYON_MOBILE = 0.00485,
RAYON_OBST = 0.00545,
LIST_INST = dateu,
COEF_INST = 31557600.,
TITER = “NO1 = Usure per years”,
INFO = 2
)
#
us2 = POST_USURE (
RESU_GENE = dynamoda,
NOEUD = “NO1”,
LOI_USURE = “EDF_MZ”,
MOBILE = _F (
COEF_USURE = 1.e-13,
COEF_B = 1.2,
COEF_N = 2.44e-08,
COEF_S = 1.14e-16,
),
OBSTACLE = _F (
COEF_USURE = 1.e-13,
COEF_B = 1.2,
COEF_N = 2.44e-08,
COEF_S = 1.14e-16
),
USURE_OBST = “YES”,
CONTACT = “GRAPPE_1_ENCO”,
RAYON_MOBILE = 0.00485,
RAYON_OBST = 0.00545,
LIST_INST = dateu,
COEF_INST = 31557600.,
TITER = “NO1 = Usure per year”,
INFO = 2
)
Handbook of Utilization
U4.8- booklet: Dedicated Post processing and analyzes
HT-66/05/004/A

Code_Aster ®
Version
7.4
Titrate:
Operator POST_USURE


Date:
19/05/05
Author (S):
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:
U4.84.05-F Page
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6 Bibliography

[1]
ARCHARD J.F. : “Contact and Rubbing off flat surfaces” - Journal off Applied Physics, vol.24,
p. 24, 1953
[2]
P.J. HOFFMANN, D.A. STEININGER, T. SCHETTLER: “PWR Steam Generator Tubes Fretting
and Fatigue Wear Phenomena and correlations ". HTD - Vol. 230/- vol. 9, Symposium one
Flow-Indiced Vibration and Noise, volume 1, ASME, 1992
[3]
F. GUEROUT: “Wear of the tubes of Générateurs of Vapor: “Geometrical Relations enters
worn volumes and depths " - HT.22/93-21A. EDF-DER. July 1993
[4]
F. GUEROUT, Mr. ZBINDEN: “Bibliographical Study of the models of wear. Review of
coefficients of wear available for the study of the damage of the tubes of Générateurs
of Vapor " - HT.22/93-56A. EDF-DER. November 1993
[5]
D. HARROWING: “Operators of calculations of wear” [R7.04.10]
Handbook of Utilization
U4.8- booklet: Dedicated Post processing and analyzes
HT-66/05/004/A

Code_Aster ®
Version
7.4
Titrate:
Operator POST_USURE


Date:
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Author (S):
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:
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Handbook of Utilization
U4.8- booklet: Dedicated Post processing and analyzes
HT-66/05/004/A

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