*BAR

Data format:

An arbitrary number of lines with 6 values each:

NEL JO JE IPRO IMAT XLO
...

Status:

Optional

Purpose:

To define bar elements (3 degrees of freedom per nodes).

Restriction:

The total number of elements (all types) may not exceed MAXEL. The nodes jo and je must have been previously defined

Details :

Parameter	Description
NEL	Identification number of the element
JO	Origin node of the element
JE	End node of the element
IPRO	Index in the table of elementary mechanical and geometrical properties (previously defined by keyword *BARPRO)
IMAT	Material index (previously defined by keyword *MAT)
XLO	Element length. If XLO=0, the element length is taken from the corresponding properties keyword (referred by IPRO). If XL0 is still null the element length is the initial distance between the nodes composing it.

Note

the element is given in an initially unstressed configuration.
for this reason the element presents no transverse stiffness (geometrical stiffness) at the first iteration of the static calculation. For some configuration this may lead to a singular matrix. Use a different value for the DASAT(1) term (see *CONVS) to go through the first iterations.

Examples :

BARPRO
c [.] [m] [kg/m] [m] [.] [.] [.] [.] [N]
1 0.0 .11107e+02 .02648 .65 1.8 0. 0. 10.
BAR
48 17 41 1 1

The element 48 is a bar going from node 17 to node 41 with mechanical properties given by the index 1 of BARPRO previously defined and an index material of 1 (previously defined by MAT).
The initial length of the bar (not defined in BARPRO) will be equal to the initial distance between nodes 17 and 34. Therefore, you have to make sure that the initial positions of the nodes given by NODES and *NODELINE correspond to the desired bar length.