95 citations · 450 across the 43 of their papers we have counts for
43 papers
Robust optimization and uncertainty quantification in the nonlinear mechanics of an elevator brake system
Piotr Wolszczak, Pawel Lonkwic, Americo Cunha +2
This paper deals with nonlinear mechanics of an elevator brake system subjected to uncertainties. A deterministic model that relates the braking force with uncertain parameters is…
Dynamics of stainless steel turning: Analysis by flicker-noise spectroscopy
Grzegorz Litak, Yuriy S. Polyakov, Serge F. Timashev +1
We use flicker-noise spectroscopy (FNS), a phenomenological method for the analysis of time and spatial series operating on structure functions and power spectrum estimates, to ide…
Band filling effects on coherence lengths and penetration depth in the two-orbital negative-U Hubbard model of superconductivity
Grzegorz Litak, Teet Örd, Küllike Rägo +1
The two-orbital superconducting state is modeled by on-site intra-orbital negative-U Hubbard correlations together with inter-orbital pair-transfer interactions. The critical tempe…
Transition to chaos and escape phenomenon in two degrees of freedom oscillator with a kinematic excitation
Marek Borowiec, Grzegorz Litak
We study the dynamics of a two-degrees-of-freedom (two DOF) nonlinear oscillator representing a quartercar model excited by a road roughness profile. Modelling the road profile by…
Nonlinear dynamics of a regenerative cutting process
Grzegorz Litak, Sven Schubert, Guenter Radons
We examine the regenerative cutting process by using a single degree of freedom non-smooth model with a friction component and a time delay term. Instead of the standard Lyapunov e…
Coherence lengths for superconductivity in the two-orbital negative-U Hubbard model
G. Litak, T. Ord, K. Rago +1
We study the peculiarities of coherency in the superconductivity of two-orbital system. The superconducting phase transition is caused here by the on-site intra-orbital attractions…