Code_Aster ®
Version
7.4
Titrate:
Modelings CABLE and CABLE_POULIE
Date:
01/06/05
Author (S):
J.M. PROIX, F. LEBOUVIER Key
:
U3.11.03-E Page
: 1/4
Organization (S): EDF-R & D/AMA, DeltaCAD
Handbook of Utilization
U3.11 booklet: Mechanical elements of structure 1D
Document: U3.11.03
Modelings CABLE and CABLE_POULIE
Summary:
This document describes for modelings CABLE and CABLE_POULIE:
· degrees of freedom carried by the finite elements which support modeling,
· the related meshs supports,
· supported loadings,
· nonlinear possibilities,
· case-tests implementing modelings.
Modelings CABLE and CABLE_POULIE correspond to elements of bar written specifically for
to take into account great displacements (cf [R3.08.02] and [R3.08.04]).
They are not usable for problems of linear mechanical analysis.
Handbook of Utilization
U3.11 booklet: Mechanical elements of structure 1D
HT-66/05/004/A
Code_Aster ®
Version
7.4
Titrate:
Modelings CABLE and CABLE_POULIE
Date:
01/06/05
Author (S):
J.M. PROIX, F. LEBOUVIER Key
:
U3.11.03-E Page
: 2/4
1 Discretization
1.1
Degrees of freedom
For these two modelings the degrees of freedom of discretization are, in each node of the mesh
support, three components of displacement of translation.
Finite element
Degrees of freedom (with each node node)
CABLE DX
DY
DZ
CABLE_POULIE DX
DY
DZ
1.2
Net support of the matrices of rigidity
The meshs support of the finite elements, in displacement formulation, are segments with two nodes
SEG2:
Modeling Nets Element
finished
Remarks
CABLE SEG2
MECABL2
CABLE_POULIE SEG3
MEPOUL1
2
Assignment of the characteristics
For these modelings it is necessary to affect geometrical characteristics which are
complementary to the data of grid. The definition of these data is carried out with
order AFFE_CARA_ELEM associated with the key word following factor:
· CABLE
Allows to define and affect a constant section.
3 Loadings
supported
The loadings available are as follows:
· “CONTACT”
Allows to define the zones subjected to conditions of contact.
Supported modeling: CABLE
· “FORCE_POUTRE”
Allows to apply linear forces
Supported modeling: CABLE
· “INTE_ELEC”
Allows to apply the force of LAPLACE acting on a principal conductor, due to
presence of a secondary conductor not necessarily right compared to this conductor
the main thing.
Supported modeling: CABLE
Handbook of Utilization
U3.11 booklet: Mechanical elements of structure 1D
HT-66/05/004/A
Code_Aster ®
Version
7.4
Titrate:
Modelings CABLE and CABLE_POULIE
Date:
01/06/05
Author (S):
J.M. PROIX, F. LEBOUVIER Key
:
U3.11.03-E Page
: 3/4
· “PESANTEUR”
Allows to apply a loading of the gravity type.
Supported modelings: CABLE, CABLE_POULIE
· “TEMP_CALCULEE”
Allows to apply a thermal loading.
Supported modelings: CABLE, CABLE_POULIE
Note:
· Possible following load in the case of a loading of the type FORCE_POUTRE.
· Possible contact between beam and surface [R5.03.50].
4 Possibilities
non-linear
4.1
Laws of behaviors
The law of behavior specific to these modelings, usable under COMP_ELAS in
STAT_NON_LINE and DYNA_NON_LINE are as follows (Cf. [U4.51.11]):
/“CABLE”
Supported modeling: CABLE
4.2 Deformations
No linear calculation is possible with these modelings (calculations are necessarily done in
great displacements).
The deformations used in the relation of behavior are the deformations of
GREEN_LAGRANGE: key word “GREEN” under DEFORMATION (Cf. [U4.51.11]).
5
Examples of implementation: case-tests
· CABLE
Statique
non-linear
SSNL100A [V6.02.100]: This test simulates the pose of a cable with two ranges. The cable is fixed at
one of its ends, passes on a fast pulley towards the other end and rests in sound
medium on a pulley placed at the bottom of a mobile suspension.
Dynamique
non-linear
SDNL100A [V5.02.100]: This test simulates the movement of a heavy bar articulated with one
not fixes by one of its ends, free elsewhere and oscillating with great amplitude in
vertical plane.
· CABLE_POULIE
Statique
non-linear
SSNL100A [V6.02.100]: This test simulates the pose of a cable with two ranges. The cable is fixed at
one of its ends, passes on a fast pulley towards the other end and rests in sound
medium on a pulley placed at the bottom of a mobile suspension.
Handbook of Utilization
U3.11 booklet: Mechanical elements of structure 1D
HT-66/05/004/A
Code_Aster ®
Version
7.4
Titrate:
Modelings CABLE and CABLE_POULIE
Date:
01/06/05
Author (S):
J.M. PROIX, F. LEBOUVIER Key
:
U3.11.03-E Page
: 4/4
Intentionally white left page.
Handbook of Utilization
U3.11 booklet: Mechanical elements of structure 1D
HT-66/05/004/A
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