Dynamics of a Turbine Blade with an Under-Platform Damper Considering the Bladed Disc’s Rotation

Abstract

High-cycle fatigue (HCF) failure of the turbine blades of aero-engines caused by high vibrational stresses is one of the main causes of aero-engine incidents [...]

Advances in Mechanical Systems Dynamics

“…In Reference [19], the vibrations of turbine blades are considered, while removing one the assumptions often employed, i.e., the bladed disc's rotation. The work contributes to a better understanding of the dynamics contributions to be considered when designing under-platform dampers.…”

Comparative Analysis of Rub-Impact Dynamics of Shrouded Blades Based on the Bilinear Hysteresis Model and the Coulomb Friction Model

“…Yang et al [29] investigated the influence of the parametric uncertainties on the dynamic characteristics of a rotor-blade system. He et al [30,31] studied the influence of the convective inertial force and Coriolis inertial force on the vibration reduction of dry friction damped blades considering the rotation of the bladed disc.…”

Application of Dry Friction Contact in Vibration Reduction in Engineering—A Short Review

“…Sayed et al [32] studied the effect of energy consumption and the viscous and slip transitions of an underplatform damper system, which showed that the contact state of optimal vibration reduction was half-stuck and half-slip. He et al [33] found that with the external excitation amplitude increasing, the vibration reduction of the transient response may be negative, and a larger normal load would be needed to maintain the vibration reduction efficiency of the damper. In [34], with uniform, linear and Hertzian normal load distributions, the dynamic characteristic of a one-dimensional friction system was discussed, which indicated that within a steady-state cycle, the energy dissipation of friction force of uniform distribution increases by 30% compared to that of linear distribution.…”