Quantitative Analysis Method of Whole Aero-engine Structural Design Based on Structural Efficiency -- Dynamic Model and Theoretical Investigation for the Fan-blade Out Event in the Flexible Rotor System of Aero-engine -- Vibration Suppression of Additional Unbalance Caused by the Non-continuous Characteristics of a Typical Aero-engine Rotor -- Vibration Analysis of an Electric Wheel Hub Motor at Stationary Operating Points -- Application of Pattern Recognition for the Mitigation of Systematic Errors in an Optical Incremental Encoder -- Dynamics of Very High-speed Rotors at Non-stationary Working Conditions -- Residual Modal Unbalance Evaluation Method by Mode Shape Weighted Optimization -- Simulation of the Ball Kinetic in Ball-type Automatic Balancing Devices by Solving the Axisymmetric Navier-Stokes Equations in Annular Cavities -- Balancing of Turbomolecular Pumps: Modal Balancing Approach and Experimental Results -- Modal Balancing Using Parametric Combination Resonance.

IFToMM conferences have a history of success due to the various advances achieved in the field of rotor dynamics over the past three decades. These meetings have since become a leading global event, bringing together specialists from industry and academia to promote the exchange of knowledge, ideas, and information on the latest developments in the dynamics of rotating machinery. The scope of the conference is broad, including e.g. active components and vibration control, balancing, bearings, condition monitoring, dynamic analysis and stability, wind turbines and generators, electromechanical interactions in rotor dynamics and turbochargers. The proceedings are divided into four volumes. This fourth volume covers the following main topics: aero-engines; turbochargers; eolian (wind) generators; automotive rotating systems; and hydro power plants. .