Q
Q.S. Lu
Researcher at Beihang University
Publications - 4
Citations - 46
Q.S. Lu is an academic researcher from Beihang University. The author has contributed to research in topics: Saddle-node bifurcation & Resonance. The author has an hindex of 2, co-authored 4 publications receiving 45 citations. Previous affiliations of Q.S. Lu include Brunel University London.
Papers
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Dynamic stability and bifurcation of an alternating load and magnetic field excited magnetoelastic beam
Q.S. Lu,C.W.S. To,K.L. Huang +2 more
TL;DR: In this paper, a model of a magnetoelastic buckled beam subjected to an external axial periodic force in a periodic transversal magnetic field is investigated, and the model is described by a two-frequency parametric vibration system with self-excitation.
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The existence of periodic motions in rub-impact rotor systems
TL;DR: In this paper, the existence of rub-impact periodic motions in an eccentric rotor system is considered and a criterion for the periodicity condition of n-periodic impacts is derived and other conditions for real rub impacts are also discussed.
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Secondary bifurcations of two non-linearly coupled oscillators
TL;DR: In this article, a modified Krylov-Bogoliubov-Mitrolposky (KBM) averaging method, the concept of normal form, singularity and unfolding theory, the theory of Z 2 -symmetry bifurcations, and path formation technique are employed to analyze the problem of co-dimension 5bifurcation, which has no symmetry property.
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Subharmonic. superharmonic and quasiperiodic oscillations induced by vortices
Q.S. Lu,C.W.S. To,K.L. Huang +2 more
TL;DR: In this paper, structural oscillations of non-inner resonance and inner resonance induced by vortex shedding are studied using the method of multiple scales under different conditions, and it is shown that the vortex-excited system exhibits complicated dynamic behaviours such as frequency-locked, subharmonic, superharmonic and quasiperiodic oscillations.