Dahl and LuGre Friction Models (MATLAB)

I am a novice at MATLAB. Does anyone have any code for a simple example of coding up either the Dahl or LuGre friction models? I would like to start with something very simple to understand (e.g. SDOF of block sliding along a surface)

Thanks and I look forward to any help out there.

[Jinwoo Lim]

have you find out the solution?? i am also having a similar problem