Numerical simulation of AC electrothermal micropump using a fully coupled model

This work concerns the modelling and numerical simulation of specific thick sheet cutting process using advanced constitutive equations accounting for elasto-plasticity with mixed hardening fully coupled with isotropic ductile damage. First, the complex kinematics of the different tools is modelled with specific boundary conditions. Second, the fully and strongly coupled constitutive equations are summarized and the associated numerical aspects are shortly presented. An inverse material identification procedure is used to determine the convenient values of the material parameters. Finally, the double slitting process is numerically simulated and the influence of the main technological parameters studied focusing on the cutting forces.

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Power production locality of bluff body flutter mills using fully coupled 2D direct numerical simulation

Journal of Fluids and Structures ◽

10.1016/j.jfluidstructs.2011.12.005 ◽

2012 ◽

Vol 28 ◽

pp. 456-472 ◽

Cited By ~ 10

Author(s):

J.M. Kuhl ◽

P.E. DesJardin

Keyword(s):

Numerical Simulation ◽

Direct Numerical Simulation ◽

Bluff Body ◽

Power Production ◽

Fully Coupled

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Numerical simulation of coupled liquid water, stress and heat for frozen soil in the thawing process

Engineering Computations ◽

10.1108/ec-03-2021-0138 ◽

2021 ◽

Vol ahead-of-print (ahead-of-print) ◽

Author(s):

Wei Xiao ◽

Enlong Liu ◽

Xiao Yin ◽

Guike Zhang ◽

Chong Zhang ◽

...

Keyword(s):

Numerical Simulation ◽

Water Content ◽

Coupled Model ◽

Frozen Soil ◽

Water Migration ◽

Overburden Pressure ◽

Content Type ◽

Thawing Process ◽

Sample Water ◽

The One

PurposeThe purpose of this paper is to perform the thermo-hydro-mechanical (THM) numerical analysis in order to study the thawing process for frozen soil and to predict the thawing settlement.Design/methodology/approachA new one-dimensional multi-field physical coupled model was proposed here to describe the thawing process of saturated frozen soil, whereby the void ratio varied linearly with effective stress (Eq. 10) and hydraulic conductivity (Eq. 27b). The thawing process was simulated with different initial and boundary conditions in an open system with temperature variations. The mechanical behavior and water migration of the representative cases were also investigated.FindingsThe comparisons of representative cases with experimental data demonstrated that the model predicts thawing settlement well. It was found that the larger temperature gradient, higher overburden pressure and higher water content could lead to larger thawing settlement. The temperature was observed that to distribute height linearly in both frozen zone and unfrozen zone of the sample. Water migration forced to a decrease in the water content of the unfrozen zone and an increase in water content at the thawing front.Research limitations/implicationsIn this study, only the one-directional thawing processes along the frozen soil samples were investigated numerically and compared with test results, which can be extended to two-dimensional analysis of thawing process in frozen soil.Originality/valueThis study helps to understand the thawing process of frozen soil by coupled thermo-hydro-mechanical numerical simulation.

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