Home > List of Keywords > *INCFRICT

*INCFRICT

Data format:

A single line with one value :

IFRPRO followed by an arbitrary number of lines with 2 values each

ISTEP INCFRIC

Status :

Optional

Purpose :

To define an incremental variation of a friction coefficient

Restriction :

*FRPRO must have been previously used

Details :

Parameter	Description
IFRPRO	identification number of the friction
property. Must have been previously defined with *FRPRO
ISTEP	quasi-static step index
INCFRIC	factor by which the friction coefficient defined in FRPRO will be multiplied at step ISTEP

Example : *FRPRO
c [.] [.] [.] [.] [.] [N/m] [N/m]
1 0.5 0 0 1 1.e+08 0

*INCFRICT
1
0 1.0
5 0.0
At step 0 the friction coefficient is \(\mu = 1 \times 0.5 = 0.5\)
At step 5 the friction coefficient is \(\mu = 0 \times 0.5 = 0\)
In between, there is a linear variation of the friction coefficient.