Browsing by Subject "Mechanics"
Now showing items 120 of 202

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 ... 
3D stability analysis of RayleighBenard convection of a liquid metal layer in the presence of a magnetic fieldeffect of wall electrical conductivity
(2014)RayleighBenard stability of a liquid metal layer of rectangular cross section is examined in the presence of a strong magnetic field that is aligned with the horizontal direction of the cross section. The latter is much ... 
The adhesive contact of a flat punch on a hyperelastic substrate subject to a pullout force or a bending moment
(2011)In the last decade; instrumented macro and nanoindentation tests have become useful tools for probing mechanical properties of materials. In this context, little indepth work has been done for soft biomaterials like ... 
Airwater twophase flow and heat transfer in a plate heat exchanger
(2002)A plate heat exchanger is tested under twophase flow conditions by using an air/water mixture as the cold stream. Visual observations recorded by a highspeed video camera lead to the construction of a flow regime map. ... 
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 ... 
Analysis of Knoop indentation
(2011)Knoop indentation tests have long been a standard method for material characterization due to the fact that they provide an easy inexpensive non destructive and objective method of evaluating basic properties from small ... 
Analysis of Knoop indentation of cohesive frictional materials
(2013)During the last decades, pyramid micro and nanoindentation tests such as Vickers, Berkovich and Knoop have been used on cohesivefrictional (pressure sensitive) materials, such as hard metals, glasses and ceramics, and ... 
Analysis of Knoop indentation strain hardening effects
(2011)Knoop indentation tests are a standard method for material characterization due to the fact that they provide an easy, inexpensive nondestructive and objective method of evaluating basic properties from small volumes of ... 
Analytical and numerical study of MHD natural convection in a horizontal shallow cavity with heat generation
(2014)A study is presented of twodimensional MHD natural convection flow in an internally heated horizontal shallow cavity in the presence of an external uniform vertical magnetic field. The main feature of the present flow is ... 
Analytical treatment of inplane parametrically excited undamped vibrations of simply supported parabolic arches
(2003)The present work offers a simple and efficient analytical treatment of the inplane undamped vibrations of simply supported parabolic arches under parametric excitation. After thoroughly dealing with the free vibration ... 
Antiplane deformation of a partially bonded elliptical inclusion
(1997)A new method that introduces two holomorphic potential functions (the twophase potentials) is applied to analyze the antiplane deformation of an elliptical inhomogeneity partiallybonded to an infinite matrix. Elastic ... 
An Assessment of Airport Environmental Noise Action Plans with Some Financial Aspects: The Case of Athens International "Eleftherios Venizelos"
(2012)Environmental noise is an important environmental factor responsible for the degradation of the urban environment and the quality of life especially in countries where climatic conditions allow for outdoor activities and ... 
Bayesian uncertainty quantification and propagation for discrete element simulations of granular materials
(2014)Predictions in the behavior of granular materials using Discrete Element Methods (DEM) hinge on the employed interaction potentials. Here we introduce a data driven, Bayesian framework to quantify DEM predictions. Our ... 
Bending instabilities of elastic tubes
(2002)The present paper examines instabilities of long thin elastic tubes. Both initially straight and initially bent tubes are analyzed under inplane bending. Tube response, a combination of ovalization instability and bifurcation ... 
Boundstate formation in interfacial turbulence: direct numerical simulations and theory
(2013)We examine pulse interaction and boundstate formation in interfacial turbulence using the problem of a falling liquid film as a model system. We perform direct numerical simulations (DNSs) of the full NavierStokes equations ... 
Boundarydriven nonequilibrium gas flow in a grooved channel via kinetic theory
(2007)The nonequilibrium flow of a gas in a twodimensional grooved channel, due to the motion of the wall of the channel, is investigated based on kinetic theory. The presence of the rectangular grooves that are placed periodically ... 
Bubble rise dynamics in a viscoplastic material
(2015)The axisymmetric dynamics of a bubble rising in a Bingham fluid under the action of buoyancy is studied. The VolumeofFluid (VOF) method is used to solve the equations of mass and momentum conservation, coupled to an ... 
Buckling and postbuckling of long pressurized elastic thinwalled tubes under inplane bending
(2006)The present paper focuses on the structural stability of long uniformly pressurized thin elastic tubular shells subjected to inplane bending. Using a specialpurpose nonlinear finite element technique, bifurcation on the ... 
Calcium carbonate scaling in a plate heat exchanger in the presence of particles
(2003)Scale formation of CaCO3 in a plate heat exchanger is investigated in the presence of various types of added particles under isothermal conditions. The parameters examined include the degree of supersaturation, the type ...