Browsing by Subject "Finite element method"
Now showing items 120 of 33

Conference Object
3D flow of HerschelBulkley fluids
(ASME, 1998)The flow of HerschelBulkley fluids through a sudden 3D square with expansion height ratio of 2:1 is studied numerically by solving the mass and momentum conservation equations along with a continuous constitutive relation. ...

Conference Object
Active earth thrust on walls supporting granular soils: Effect of wall movement
(IOS Press, 2013)The methods currently used in the design practice of retaining walls supporting granular soils (sand, gravel, silt, and their mixtures) assume that the soil friction angle and, consequently, the active earth pressure ...

Article
Alignment of electrospun polymer fibers using a concave collector
(2015)During recent years, electrospinning has become a powerful technique for the costeffective production of fibrous materials with diameters ranging from a few nanometers up to a few micrometers. In a conventional electrospinning ...

Article
Bearing capacity in sand under eccentric and inclined loading using a bounding surface plasticity model
(2017)The bearing capacity of strip footings on sand under inclined or eccentric loading is investigated using finite element analysis. The sand behavior is simulated using a bounding surface plasticity constitutive model based ...

Conference Object
Compression molding of semiconcentrated fiber suspensions: Flow and fiber orientation
(Publ by ASME, 1993)The focus of this paper is compression molding of semiconcentrated fiber suspensions. During compression molding a premeasured amount of raw material (charge) is placed between two halves of a die. The die is then closed ...

Article
Compression molding using a generalized eulerian–lagrangian formulation with automatic remeshing
(1992)A generalized Eulerian‐Lagrangian approach is used to study the compression molding of viscoelastic polymers. The complete, unsteady, two‐dimensional equations of motion are used in the analysis. The White–Metzner model ...

Conference Object
Control of quantized multiagent systems with linear nearest neighbor rules: A finite field approach
(2010)We study the problem of controlling a multiagent system where each agent is only allowed to be in a discrete and finite set of states. Each agent is capable of updating its state based on the states of its neighbors, and ...

Conference Object
Effects of periodic gravity modulation in microgravity convection systems
(Publ by ASME, 1993)Natural convection in an enclosure that is subjected to periodic excitations is investigated using a classical mixed Galerkin finite element method. The modulation is incorporated in the momentum equations, through a ...

Article
Flow development in compression of a finite amount of a Bingham plastic
(2007)The flow and shape evolution during the compression of a finite amount of a Bingham plastic is investigated by means of numerical simulations. The problem relates to the popular compression test used for the rheological ...

Conference Object
Injection molding of dilute and semidilute fiber suspensions
(Publ by ASME, 1992)The focus of this paper is unsteady flow of semidilute fiber suspensions in complex geometries. These flows are typical of injection molding problems in which the raw material in granular form, usually plastic resin mixed ...

Doctoral Thesis Open Access
Investigation of the response and behaviour of ancient columns and colonnades under seismic excitations using the discrete element method
(Πανεπιστήμιο Κύπρου, Πολυτεχνική Σχολή / University of Cyprus, Faculty of Engineering, 200905)Η διερεύνηση της σεισμικής συμπεριφοράς αρχαίων μνημειακών κατασκευών με σπονδυλωτούς κίονες παρουσιάζει μεγάλο επιστημονικό ενδιαφέρον αφού η απόκρισή τους περιέχει εξαιρετικά σύνθετα φαινόμενα λικνισμού και ολισθήσεων. ...

Article
Microstructurebased, multiscale modeling for the mechanical behavior of hydrated fiber networks
(2008)A multiscale formulation is derived for the mechanics of a dilute fiber network microstructure, as occurs in in vitro reconstituted collagen gels, to accommodate the deterministic solution of a uniformstress condition in ...

Conference Object
MIMO disturbance and plant uncertainty attenuation by feedback
(2002)This paper investigates the ability of feedback to reduce plant and disturbance uncertainties in the MIMO case, by solving two fundamental problems posed by Zames in the late seventies. The approach used here is Banach ...

Article
Modelling and Simulation of Bolted Joints under Harmonic Excitation
(2003)Bolted metal joints under harmonic loading exhibit hysteretic behaviour. This is the major source of damping in frame structures with bolted joints, since the material damping of these structures is very small. In this ...

Doctoral Thesis Open Access
Modelling of fluid driven fractures in cohesive poroelastoplastic formations
(Πανεπιστήμιο Κύπρου, Πολυτεχνική Σχολή / University of Cyprus, Faculty of Engineering, 201105)Το πρόβλημα της υδραυλικής ρωγμής συναντάται στη τεχνική της υδραυλικής θραύσης, που εφαρμόζεται από την πετρελαϊκή βιομηχανία για την αύξηση της ανάκτησης υδρογονανθράκων. Κατά την εφαρμογή της τεχνικής, προσοχή δίδεται ...

Article
Multiscale modelling of solid tumour growth: the effect of collagen micromechanics
(2016)Here we introduce a model of solid tumour growth coupled with a multiscale biomechanical description of the tumour microenvironment, which facilitates the explicit simulation of fibre–fibre and tumour–fibre interactions. ...

Article
Multiscale, structurebased modeling for the elastic mechanical behavior of arterial walls
(2007)Passive elastic behavior of arterial wall remains difficult to model. Although phenomenological and structural models exist, the question of how the threedimensional network structure of the collagen in the artery determines ...

Article
Permeability calculations in threedimensional isotropic and oriented fiber networks
(2008)Hydraulic permeabilities of fiber networks are of interest for many applications and have been studied extensively. There is little work, however, on permeability calculations in threedimensional random networks. Computational ...

Conference Object
Rheological effects of strusture breakdown in semisolid slurries
(Affiliation: Department of Mechanical and Industrial Engineering, University Cyprus, P.O.Box 20537, 1678 Nicosia, CyprusAffiliation: Department of Mathematics and Statistics, University of Cyprus, P.O.Box 20537, 1678 Nicosia, CyprusAffiliation: Metal Processing Institute, WPI, Worcester, MA, United StatesCorrespondence Address: Alexandrou, A.N.Department of Mechanical and Industrial Engineering, University Cyprus, P.O.Box 20537, 1678 Nicosia, Cyprus, 2004)An essential element for the integration of the semisolid metal (SSM) process in the production of complex commercial components is the availability of accurate mathematical and computational tools that could describe both ...

Conference Object
Sedimentation of heavy crystal particles under microgravity conditions
(American Institute of Aeronautics and Astronautics Inc, AIAA, 1998)Crystals grown from specially prepared liquid solutions have important industrial applications such as in biochemical processes, refining etc. The efficiency of these crystals is usually a function of their size. Therefore, ...