Results 171 to 180 of about 8,196 (223)

Viscoplasticity of Geomaterials

1994
First one describes the main rheological properties exhibited by geomaterials and how to choose the most appropriate constitutive equation in order to describe these dominant properties. One presents the procedure to be followed in order to determine all constitutive functions and parameters necessary to describe transient and stationary creep ...
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Viscoplastic–viscoplastic displacement in a plane channel with interfacial tension effects

Chemical Engineering Science, 2013
Abstract The inertialess immiscible displacement of a viscoplastic material by a second viscoplastic material in a pressure-driven capillary plane channel is numerically analyzed. The fluids are modeled as Bingham materials with a regularization function proposed by Papanastasiou (1987) .
Jackson F. Freitas, Edson J. Soares, Roney L. Thompson   +2 more
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A Theory of Multiaxial Anisotropic Viscoplasticity

Journal of Applied Mechanics, 1981
A theory of anisotropic viscoplasticity is developed. It is compared with and shown to reduce to existing theories under appropriate restrictions. The theory accommodates anisotropic hardening laws which, by means of Lagrangian mappings in stress space, incorporate experimentally observed yield surface distortion as well as kinematic and isotropic flow-
Eisenberg, M. A., Yen, C.-F.
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Plasticity and Viscoplasticity

1989
The theory of plasticity describes the mechanics of deformation in plastically deforming solids, and, as applied to metals and alloys, it is based on experimental studies of the relations between stresses and strains under simple loading conditions.
Shiro Kobayashi, Soo-Ik Oh, Taylan Altan
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Visualization of an annular viscoplastic jet

Journal of Visualization, 2013
The current study investigates the global flow field characteristics of a submerged annular viscoplastic jet. The mass and momentum conservation equations, governing the steady laminar flow field, along with the Bingham rheological model, are numerically solved using a finite-difference scheme.
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Numerical Integration of Viscoplastic Problems

ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, 2000
AbstractViscoplastic deformation is characterized by a combined system of balance equations for the displacements and evolution equations for the internal variables. The paper presents a very efficient algorithm to solve the nonlinear system that arises from the application of the Finite Element Method in combination with an implicit time ...
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VISCOPLASTICITY

2023
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Nonlinear Viscoelasticity and Viscoplasticity Characteristics of Virgin and Modified Asphalt Binders

Journal of Engineering Mechanics - ASCE, 2023
Hui Li, Zhen Leng, Xue Luo
exaly  

Ideal viscoplasticity

Acta Metallurgica, 1972
P.P Gillis, J.M Kelly
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Viscoplasticity

2018
Wojciech Sumelka, Tomasz Łodygowski
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