Results 91 to 100 of about 1,795,623 (284)

Practical Stability of Impulsive Discrete Systems with Time Delays

Abstract and Applied Analysis, 2014
The purpose of this paper is to investigate the practical stability problem for impulsive discrete systems with time delays. By using Lyapunov functions and the Razumikhin-type technique, some criteria which guarantee the practical stability and ...
Liangji Sun, Chengyan Liu, Xiaodi Li
doaj   +1 more source

Integrable discretizations of some cases of the rigid body dynamics

, 2001
A heavy top with a fixed point and a rigid body in an ideal fluid are important examples of Hamiltonian systems on a dual to the semidirect product Lie algebra $e(n)=so(n)\ltimes\mathbb R^n$. We give a Lagrangian derivation of the corresponding equations
Abraham R, Adler V E, Arnold V I, Beliaev A V, Bobenko A I, Bobenko A I, Bobenko A I, Bogoyavlenski O I, Bogoyavlensky O I, Bolsinov A V, Cendra H, Clebsch A, de Brun F, Frahm W, Gavrilov L, Holm D D, Kupershmidt B A, Manakov S V, Marsden J E, Marsden J E, Marsden J E, Marsden J E, Moser J, Perelomov A M, Ratiu T, Ratiu T, Reyman A G, Reyman A G, Schottky F, Suris Yu B, Suris Yu B, Suris Yu B, Veselov A P, Wendlandt J M   +33 more
core   +3 more sources

A Thermodynamic 3D Model for the Simulation of Diffusion‐Controlled Alloying Processes in Heterogeneous Material Structures

Advanced Engineering Materials, EarlyView.
A numerical model resulting from irreversible thermodynamics for describing transport processes is introduced, focusing on thermodynamic activity gradients as the actual driving force for diffusion. Implemented in CUDA C++ and using CalPhaD methods for determining the necessary activity data, the model accurately simulates interdiffusion in aluminum ...
Ulrich Holländer, Leonhard Holländer, André Langohr, Hans Jürgen Maier   +3 more
wiley   +1 more source

Self-synchronization of Thomson self-oscillatory systems in discrete time

Физика волновых процессов и радиотехнические системы, 2015
The effect arising in discrete time at interaction of self-oscillations with higher harmonics of the main frequency is described. It is shown that it is similar to effect of capture of the frequency (synchronization) of self-oscillations by an external ...
V.V. Zaitsev, O.V. Zaitsev, I.V. Stulov
doaj  

Investigation of Laser Ablation and Brush Pre‐Treatments for AlCu Cold Roll Bonding in Oxygen‐Free Conditions

Advanced Engineering Materials, EarlyView.
It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti, Finn‐Lennard Janthur, Selina Raumel, Sascha Jan Zimmermann, Sarah Seffer, René Gustus, Sebastian Herbst, Marc C. Wurz, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Florian Nürnberger   +11 more
wiley   +1 more source

Optimal Robust Fault Detection for Linear Discrete Time Systems

Journal of Control Science and Engineering, 2008
This paper considers robust fault-detection problems for linear discrete time systems. It is shown that the optimal robust detection filters for several well-recognized robust fault-detection problems, such as ℋ−/ℋ∞, ℋ2/ℋ∞, and ℋ∞/ℋ∞ problems, are the ...
Nike Liu, Kemin Zhou
doaj   +1 more source

Relationship between the observability of standard and fractional linear systems

Archives of Control Sciences, 2017
The relationship between the observability of standard and fractional discrete-time and continuous-time linear systems are addressed. It is shown that the fractional discrete-time and continuous-time linear systems are observable if and only if the ...
Kaczorek Tadeusz
doaj   +1 more source

Time varying linear discrete-time systems. II. Duality [PDF]

Pacific Journal of Mathematics, 1980
This paper treats questions of duality for time-varying linear systems defined on a locally finite partially ordered time set. Difference equations are studied by considering the state space of the system as a module over the incidence algebra of the poset, and dual systems can be described abstractly.
openaire   +3 more sources

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

Advanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar, Dhanadeep Dutta, G. Bharat Reddy   +2 more
wiley   +1 more source

Stability of Interval Positive Fractional Discrete–Time Linear Systems

International Journal of Applied Mathematics and Computer Science, 2018
The aim of this work is to show that interval positive fractional discrete-time linear systems are asymptotically stable if and only if the respective lower and upper bound systems are asymptotically stable.
Kaczorek Tadeusz
doaj   +1 more source