Numerical study of the combined effects of inertia, slip, and compressibility in extrusion of yield stress fluids

2014 ◽  
Vol 53 (10-11) ◽  
pp. 791-804 ◽  
Author(s):  
Zacharias Kountouriotis ◽  
Georgios C. Georgiou ◽  
Evan Mitsoulis
Keyword(s):  
Yield Stress ◽  
Numerical Study ◽  
Combined Effects ◽  
Yield Stress Fluids

Viscous fingering in yield stress fluids: a numerical study

2015 ◽  
Vol 97 (1) ◽  
pp. 161-176 ◽  
Author(s):  
Behnam Ebrahimi ◽  
Peyman Mostaghimi ◽  
Hamed Gholamian ◽  
Kayvan Sadeghy
Keyword(s):  
Yield Stress ◽  
Numerical Study ◽  
Viscous Fingering ◽  
Yield Stress Fluids

scholarly journals Design and analysis of concrete-filled tubular flange girders under combined loading

2021 ◽  
pp. 136943322110015
Author(s):  
Rana Al-Dujele ◽  
Katherine Ann Cashell
Keyword(s):  
Finite Element ◽  
Axial Force ◽  
Failure Modes ◽  
Numerical Study ◽  
Combined Loading ◽  
Torsional Stiffness ◽  
Fe Model ◽  
Combined Effects ◽  
Element Analysis ◽  
Hollow Section

This paper is concerned with the behaviour of concrete-filled tubular flange girders (CFTFGs) under the combination of bending and tensile axial force. CFTFG is a relatively new structural solution comprising a steel beam in which the compression flange plate is replaced with a concrete-filled hollow section to create an efficient and effective load-carrying solution. These members have very high torsional stiffness and lateral torsional buckling strength in comparison with conventional steel I-girders of similar depth, width and steel weight and are there-fore capable of carrying very heavy loads over long spans. Current design codes do not explicitly include guidance for the design of these members, which are asymmetric in nature under the combined effects of tension and bending. The current paper presents a numerical study into the behaviour of CFTFGs under the combined effects of positive bending and axial tension. The study includes different loading combinations and the associated failure modes are identified and discussed. To facilitate this study, a finite element (FE) model is developed using the ABAQUS software which is capable of capturing both the geometric and material nonlinearities of the behaviour. Based on the results of finite element analysis, the moment–axial force interaction relationship is presented and a simplified equation is proposed for the design of CFTFGs under combined bending and tensile axial force.

Multi-layer channel flows with yield stress fluids

2011 ◽  
Vol 166 (5-6) ◽  
pp. 262-278 ◽  
Author(s):  
S. Hormozi ◽  
K. Wielage-Burchard ◽  
I.A. Frigaard
Keyword(s):  
Yield Stress ◽  
Channel Flows ◽  
Yield Stress Fluids

A modern look on yield stress fluids

2016 ◽  
Vol 56 (3) ◽  
pp. 177-188 ◽  
Author(s):  
Alexander Malkin ◽  
Valery Kulichikhin ◽  
Sergey Ilyin
Keyword(s):  
Yield Stress ◽  
Yield Stress Fluids

A Numerical Study on the Seismic Site Response of Rocky Valleys with Irregular Topographic Conditions

2019 ◽  
Vol 10 (04) ◽  
pp. 1850011 ◽  
Author(s):  
Mohammad Katebi ◽  
Behrouz Gatmiri ◽  
Pooneh Maghoul
Keyword(s):  
Seismic Analysis ◽  
Numerical Study ◽  
Site Response ◽  
Slope Angle ◽  
Response Spectra ◽  
Topographic Effects ◽  
Combined Effects ◽  
Acceleration Response ◽  
Vertically Propagating ◽  
Maximum Amplification

This paper investigates topographic effects of rocky valleys with irregular topographic conditions subjected to vertically propagating SV waves of Ricker type using a boundary element code. Valleys with two intersecting slopes, [Formula: see text] and [Formula: see text], are modelled in order to study their combined effects on ground motion. Presented in the form of pseudo-acceleration response spectra, results of this work can be extended to similar topographies. The main findings are: (i) [Formula: see text] (the first slope angle) and [Formula: see text] (L is the half width of the valley and [Formula: see text] is its corresponding height) have amplifying effects, and [Formula: see text] (the second slope angle) has de-amplifying effects on the site response. (ii) [Formula: see text] has a straight effect on intensifying the effects of both [Formula: see text] and [Formula: see text]. (iii) The combined effects of slope angles have been found to be important in modifying the response so more than a single slope should be considered for seismic analysis. (iv) Engineers should use the maximum amplification of 2.4 in case of valleys with the first and second slope angles below [Formula: see text].

Estimation of Rate of Strain Magnitude and Average Viscosity in Turbulent Flow of Shear Thinning and Yield Stress Fluids

2010 ◽  
Author(s):  
Robert Sawko ◽  
Chris P. Thompson ◽  
Theodore E. Simos ◽  
George Psihoyios ◽  
Ch. Tsitouras
Keyword(s):  
Turbulent Flow ◽  
Yield Stress ◽  
Shear Thinning ◽  
Yield Stress Fluids ◽  
Strain Magnitude
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