Keyword type: step
With this option one can redefine the contact friction value within a step. There is one required parameter INTERACTION, denoting the name of the *SURFACE INTERACTION the friction of which one would like to change. This card must be followed by a *FRICTION card to become effective.
First and only line:
Example: *CHANGE FRICTION,INTERACTION=IN1
indicates that the friction value of surface interaction IN1 is to be changed to the value underneath the following *FRICTION card.
Example files: friction2