Various typical dry friction dampers in aero-engine were summarized

and different typical dry friction models and contact kinematics models as well as their merit

demerit and range of application were introduced. Various computational methods to obtain the response of dry friction system were reviewed

and the multi-harmonic balance method combined with an alternating frequency-time domain method procedure was introduced in detail for particular interest. Furthemore

the key points of alternating frequency-time domain procedure

such as the arc-length continuation

were introduced. In the end

the difficulties and research directions in this research field were discussed.