In turbomachines, dry friction resulting from stator–rotor contacts is a severe problem that may degrade lifetime of the machine or even lead to complete failure. Knowledge about system states and contact forces beneficial for monitoring prevent through, e.g., active magnetic bearings. this paper, nonlinear model derived describes lateral rotor vibrations in case no contact. The elastic behavio...

In this paper, the dynamic analysis of the composite sandwich truncated conical shells (STCS) with various boundary conditions subjected to the low velocity impact was studied analytically, based on the higher order sandwich panel theory. The impact was assumed to occur normally over the top face-sheet, and the contact force history was predicted using two solution models of the motion which we...

The passivity-based PD force control of a constrained one-link flexible arm is investigated using a linear distributed parameter model. In order to overcome the inherent limitations caused by the non-minimum phase nature of the noncollocation of the joint torque input and the tip contact force output, a new input induced by the measurement of root bending moment and a virtual contact force outp...