11 papers
Suppression of chaos by weak resonant excitations in a nonlinear oscillator with a non-symmetric potential
Grzegorz Litak, Arkadiusz Syta, Marek Borowiec
We examine the Mielnikov criterion for transition to chaos in case of one degree of freedom nonlinear oscillator with non symmetric potential. This system subjected to an external…
A Numerical Study of a Simple Stochastic/Deterministic Model of Cycle-to-Cycle Combustion Fluctuations in Spark Ignition Engines
G. Litak, M. Wendeker, M. Krupa +1
We examine a simple, fuel-air, model of combustion in a spark ignition (si) engine with indirect injection. In our two fluid model, variations of fuel mass burned in cycle sequence…
Dynamics of a Gear System with Faults in Meshing Stiffness
Grzegorz Litak, Michael I. Friswell
Gear box dynamics is characterised by a periodically changing stiffness. In real gear systems, a backlash also exists that can lead to a loss in contact between the teeth. Due to t…
Cycle-to-Cycle Fluctuations of Burned Fuel Mass in Spark Ignition Combustion Engines
M. Wendeker, G. Litak, M. Krupa
We examine a simple, fuel-air, model of combustion in spark ignition (si) engine with indirect injection. In our two fluid model, variations of fuel mass burned in cycle sequences…
Superconductivity Induced by Negative Centers
G. Litak, T. Paiva, R. T. Scalettar +2
We study the effect of random dilution of attraction centers on electron pairing in a generalization of the negative Hubbard model where the interaction , defined on the t…
P-wave Pairing in superconducting Sr2RuO4
G. Litak, J. F. Annett, B. L. Gyorffy +1
Two models for the superconducting state of Sr2RuO4 have been analyzed. In an "orbital model" the in-plane and out of-plane interactions between electrons on neighboring Ru atoms a…