*FRICGEN

Data format:

An arbitrary number of lines with 8 values each

NBFRI NEL NELI JO JOI JE JEI IPRO

Status : optional

Purpose : to define series of friction elements (3 dof by nodes)

Restriction : the total number of elements (all types) may not exceed MAXEL . The nodes JO,JE and all the other nodes that will be used as extremities of the generated elements must have been previously defined

Details :

Parameter	Description
NBFRI	number of contact elements to be generate
NEL	identification number of the first element
NELI	element number increment
JO	origin node of the first element (ground)
JOI	increment on the origin node number
JE	end node of the first element (structure)
JEI	increment on the end node number
IPRO	index in the table of soil properties previously defined by keyword *FROPT

Note :

The program will generate NBFRI elements with properties IPRO :
El. NEL connecting nodes JO and JE
El. NEL+NELI connecting nodes JO+JOI and JE+JEI ...
EL. NEL+(NBBEA-1)NELI connecting nodes JO+(NBBEA-1)JOI and JE+(NBBEA-1)*JEI

The JO's belong to the ground and the JE's to the structure.

Example : See figure on friction elements in *FRICT

*FRICGEN
4 9 1 10 1 2 1 1
3 13 1 14 1 6 1 2

Four friction elements will be generated from element 9, with an increment of one. Element 9 will start at node 10 and end at node 2. Element 10 will start at node 11 (10+1) and end at node 3 (2+1), and so on...

These friction elements will have the properties previously defined by the index 1 of *FRPRO. Then three more friction elements will be generated with property number 2.