Modelings CABLE and CABLE

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

Instruction manual

U3.11 booklet: Mechanical elements of structure 1D

HT-66/05/004/A

Organization (S):

EDF-R & D/AMA, DeltaCAD

Instruction manual
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.

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

Instruction manual

U3.11 booklet: Mechanical elements of structure 1D

HT-66/05/004/A

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

CABLE_POULIE DX

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

Assignment of the characteristics

For these modelings it is necessary to affect geometrical characteristics which are
complementary to the data of mesh. The definition of these data is carried out with
order

AFFE_CARA_ELEM

associated 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 areas 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 main conductor, due to
presence of a secondary conductor not necessarily right compared to this conductor
the main thing.

Supported modeling:

CABLE

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

Instruction manual

U3.11 booklet: Mechanical elements of structure 1D

HT-66/05/004/A

“GRAVITY”

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

STAT_NON_LINE

and

DYNA_NON_LINE

is 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]).

Examples of implementation: case-tests

CABLE

 Statique

non-linear

SSNL100A [V6.02.100]: This test simulates the installation 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