Browsing by Subject "Mathematics, Interdisciplinary Applications"
Now showing items 120 of 33

A 3D fibre beamcolumn element with shear modelling for the inelastic analysis of steel structures
(2010)A forcebased fiber beamcolumn element is proposed for the capacity assessment of frame structures under high shear. The proposed element is suitable for the performance assessment of large scale steel structures, which ... 
Analysis and optimization of dynamically loaded porous metal sliding bearings under conditions of elastohydrodynamic lubrication
(2007)Purpose  This paper aims to develop a simulating model of a journal porous metal bearing under elastohydrodynamic conditions and combined (radial, friction and thermal) load distribution and to carry out structural ... 
Dependence of contact area on the resolution of fractal interfaces in elastic and inelastic problems
(2011)Purpose  The purpose of this paper is to investigate the influence of the resolution with which interfaces of fractal geometry are represented, on the contact area and consequently on the contact interfacial stresses. The ... 
Detection of lowdimensional chaos in wind time series
(2009)In the present work we investigated the existence of lowdimensional deterministic chaos in wind time series. The time series were obtained from the New Anchialos (Greece) Air Base Measurement station. In a first place we ... 
Determination of the load  displacement curve of moment resisting steel frames under horizontal loading
(2001)Seismic resistant steel frames are very common in regions of high seismic risk due to their excellent characteristics in terms of strength and ductility. For the evaluation of the total ductility, various methods have been ... 
Evaluation of the ductility features in steel structures with softening momentrotation behaviour based on a nonconvex optimization formulation
(2000)In order to determine the ductility features of steel structures, several approaches have been introduced in the bibliography. In this paper a certain method is proposed which considers the actual form of the momentrotation ... 
Feedback controlling against chaos
(2000)A PD (Proportional plus Derivative) feedback controller is proposed for the control of chaotic dynamic systems. Using this feedback law the design requirement of command matching is satisfied independently of the perturbations ... 
Finite element analysis of polymeric membrane and coating formation by solvent evaporation
(2001)The solvent evaporation process from acetonecellulose acetate solutions is studied as a numerical experiment. The process is modeled as a coupled heat and mass transfer problem with a moving boundary. The resulting ... 
A fractional Brownian motion model for time series produced by constant temperature molecular dynamics simulations
(2002)In the present work we performed an analysis of time series of instantaneous temperature and pressure produced during constant temperature molecular dynamics. Simulations were applied to a nickel oxide grain boundary for ... 
Friction evolution as a result of roughness in fractal interfaces
(2003)In this paper, the influence of fractal interface geometry to the evolution of the friction mechanism is studied The paper is based on fractal approaches for the modelling of the multiscale selfaffine topography of these ... 
A homogenous random fractal model for time series produced by constant energy molecular dynamics simulations
(2003)In the present work we present an analysis of time series of instantaneous temperature and pressure produced during microcanonical (constant energy) molecular dynamics (MD). Simulations were applied to a nickel oxide grain ... 
Improving the Performance of the Continued Fractions Method Using New Bounds of Positive Roots
(2008)In this paper we compare four implementations of the VincentAkritasStrzebonski Continued Fractions (VASCF) real root isolation method using four different (two linear and two quadratic complexity) bounds on the values ... 
Noise perturbation of the thermostat in constant temperature molecular dynamics simulations
(2004)In this work we study the effects of noise applied on the thermostat in the case of the constant temperature molecular dynamics simulations. We consider the cases of additive and or multiplicative noise. We then examine ... 
A numericsymbolic approach to the problem of localization of plastic flow
(2001)A method combining numerical and symbolic computations is presented for deciding whether or not a mechanical state given numerically in terms of its fourthorder tenser of moduli satisfies the localization condition, and ... 
Numerical integration of fluid dynamics problems by discrete dynamical systems
(2000)A discrete time algorithm for the numerical solution of the NavierStokes equations, namely the set of nonlinear partial differential equations (PDEs) characterizing the how of viscous and compressible fluids is presented. ... 
Numerical study of lowyield point steel shear walls used for seismic applications
(2010)Purpose  The purpose of this paper is to provide the research and practising engineers with insight on the benefits of using lowyield point steel with respect to ordinary steel as a construction material for shear wall ... 
ON A CLOSENESS OF THE JULIA SETS OF NOISEPERTURBED COMPLEX QUADRATIC MAPS
(2012)In the present work, we extend the results of the study of the structural stability of the Julia sets of noiseperturbed complex quadratic maps in the presence of dynamic and output noise both for the additive and the ... 
On perturbations of the Mandelbrot map
(2000)In this work, we propose new applications of analytic and nonanalytic perturbations of the Mandelbrot map as expressed in a twoparameter deformation family of it. The influence of alternative applications of noise for ... 
On probabilistic Mandelbrot maps
(2009)In this work, we propose a definition for a probabilistic Mandelbrot map in order to extend and support the study initiated by Argyris et al. [Argyris J, Andreadis I, Karakasidis Th. On perturbations of the Mandelbrot map. ... 
On the Derivation of the Nonlinear Discrete Equations Numerically Integrating the Euler PDEs
(1998)The Euler equations, namely a set of nonlinear partial differential equations (PDEs), mathematically describing the dynamics of inviscid fluids are numerically integrated by directly modeling the original continuousdomain ...