A component mode analysis is carried out based upon the use of constraint conditions and
Lagrange multipliers. It is used to generalize the well known results for a single-degree-of-
freedom dry friction damper to a multi-mode linear system with a spring-mass-dry friction
damper attached. The dry friction damper law (Coulomb damping) is approximated by its first
harmonic.

The behavior of a linear, damped modal system with a non-linear spring-mass—dry friction
damper system attached, part II - NASA/ADS … The behavior of a linear, damped modal
system with a non-linear spring-mass—dry friction damper system attached, part II …
Unfortunately, a sign reversal in the damping term led to a misinterpretation of the effect of
linear damping of the modal system. In the present paper this is corrected and the work
previously reported is extended. …