A rotor dynamic system requires high power/torque to accelerate through its resonance
conditions or critical speeds to operate at a super-critical speed. Most practical drive sources …

The dynamics of a system comprising a heavy rotor which is coupled to a motor through a
long and torsionally flexible drive shaft with universal joints (U-joints) at its both ends is …

The article examines the effect of linear dam** and combined linear and nonlinear cubic
dam** of an elastic support on the dynamics of a gyroscopic rigid rotor with a non-ideal …

A rotor system with asymmetry in its bending flexibility as well as in its support bearings has
many stable and unstable speed ranges. The dynamics of such a system is governed by …

Periodically-varying gear mesh stiffness is a source of parametric excitation, which causes
torsional instabilities in geared rotor systems. Unbounded amplitude growth at instability …

A rigid rotor system which is driven through a Universal joint (U-joint) and is mounted on
weakly-damped flexible supports exhibits principal and combination type parametric …

Sommerfeld effect is a nonlinear phenomenon observed in rotating machinery driven by a
non-ideal source. It is characterised by capture at resonance for a finite range of drive power …

In this paper, Sommerfeld effect of a non-ideal induction motor in a simple cantilever beam
system is studied. On basis of fully considering the interaction between the beam structure …

One of the most intensively develo** fields of vibratory technologies is focused on
improving the design and operational parameters of the excitation mechanisms and drives …

This study investigates the frequency capture characteristic of four unbalanced rotors in multi-
frequency ranges. First, using the average method, the synchronous condition of four …