Results 21 to 30 of about 227,622 (300)
A Novel Estimation Approach of Pressure Gradient and Haemodynamic Stresses as Indicators of Pathological Aortic Flow Using Subvoxel Modelling [PDF]
IEEE Transactions on Biomedical Engineering, 2021 The flow downstream from aortic stenoses is characterised by the onset of shear-induced turbulence that leads to irreversible pressure losses. These extra losses represent an increased resistance that impacts cardiac efficiency. A novel approach is suggested in this study to accurately evaluate the pressure gradient profile along the aorta centreline ...
Pascal Corso +4 more
openaire +3 more sources
Size-Dependent Buckling Analysis of Microbeams by an Analytical Solution and Isogeometric Analysis
Crystals, 2022 This paper proposes an analytical solution and isogeometric analysis numerical approach for buckling analysis of size-dependent beams based on a reformulated strain gradient elasticity theory (RSGET).
Shuohui Yin +4 more
doaj +1 more source
Comparison between defects and micro-notches in multiaxial fatigue – The size effect and the gradient effect [PDF]
, 2009 Lien vers la version éditeur: http://www.sciencedirect.com/science/article/pii/S0142112308002156This paper attempts to improve the understanding of the multiaxial high cycle fatigue response of micro sized stress concentrations or notches of different ...
MOREL, Franck, NADOT, Yves, MOREL, Anne
core +1 more source
An approach to nonlinear viscoelasticity via metric gradient flows [PDF]
, 2013 We formulate quasistatic nonlinear finite-strain viscoelasticity of rate type as a gradient system. Our focus is on nonlinear dissipation functionals and distances that are related to metrics on weak diffeomorphisms and that ensure time-dependent frame ...
Mielke, A. +4 more
core +1 more source
Nanomaterials, 2021 In this manuscript the dynamic response of porous functionally-graded (FG) Bernoulli–Euler nano-beams subjected to hygro-thermal environments is investigated by the local/nonlocal stress gradient theory of elasticity.
Rosa Penna +3 more
doaj +1 more source
Enhanced approach to consistency in gradient-dependent plasticity [PDF]
, 2004 This note proposes a modification of gradient-dependent plasticity to improve convergence. In gradient-dependent plasticity, the consistency condition, which results in a differential equation with respect to the plastic multiplier, is solved ...
Baker, Graham, Chen, G.
core +1 more source
A multiscale constitutive model for intergranular stress corrosion cracking in type 304 austenitic stainless steel [PDF]
, 2013 Intergranular stress corrosion cracking (IGSCC) is a fracture mechanism in sensitised austenitic stainless steels exposed to critical environments where the intergranular cracks extends along the network of connected susceptible grain boundaries.
Rahimi, S +4 more
core +1 more source
MATEC Web of Conferences, 2018 New high strength steels are widely used nowadays in many industrial areas as in automotive industry. These steels are more resistant and provide higher fatigue limits than latter ones but they are also more sensible to small defects.
Niamchaona Wichian +5 more
doaj +1 more source
Anisotropic eddy-viscosity concept for strongly detached unsteady flows [PDF]
, 2007 The accurate prediction of the flow physics around bodies at high Reynolds number is a challenge in aerodynamics nowadays. In the context of turbulent flow modeling, recent advances like large eddy simulation (LES) and hybrid methods [detached eddy ...
Harran, Gilles +3 more
core +1 more source
International Journal of Cardiology: Heart & Vasculature, 2020 Background: The objectives of the study were to describe positron emission tomography (PET) parameters, using the tracers 15O-water at rest/stress, 11C-acetate, and 11C-HED, with regard to nonsustained ventricular tachycardia (NSVT) in hypertrophic ...
Peter Magnusson +6 more
doaj +1 more source