Hello,

I just want to understand the concept of Stiffness Factor for Friction (Kf) used to include the effect of friction at restraints, over the dynamic response.

The literature shows an equation for Kf which include the static force, the friction coefficient, and a "friction factor from control spreadsheet". To me, those do not match when you try to use equivalent units. I mean, Kf would not end being unitless, nor force, nor stiffness, but a combination between force units and stiffness units, which does not make sense.

Could you help me out here? i´m using caesar II, v4.2

thanks in advance !! :rolleyes:

JRO