Articles with "constitutive equations" as a keyword



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Calibration of constitutive equations under conditions of large strains and stress triaxiality

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Published in 2018 at "Archives of Civil and Mechanical Engineering"

DOI: 10.1016/j.acme.2018.02.013

Abstract: Abstract Constitutive equations were calibrated to improve their application in assessing a stress field in front of a crack under the conditions of large strains and stress triaxiality. The Bai–Wierzbicki method was adopted, and certain… read more here.

Keywords: large strains; strains stress; triaxiality; conditions large ... See more keywords
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Elasto-plastic constitutive equations for short fiber reinforced polymers

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Published in 2019 at "Composites Part B: Engineering"

DOI: 10.1016/j.compositesb.2018.11.106

Abstract: Abstract Short fiber-reinforced thermoplastics show nonlinear response under different sorts of loadings. The nonlinear behavior is referred to the plasticity-induced deformation in the short fiber reinforced materials. Proper constitutive equations are required to describe their… read more here.

Keywords: short fiber; fiber reinforced; constitutive equations; model ... See more keywords
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On the theory of constitutive equations for composites with different resistance in compression and tension

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Published in 2021 at "Composite Structures"

DOI: 10.1016/j.compstruct.2021.113921

Abstract: Abstract The paper proposes a new approach to the construction of nonlinear constitutive equations for the description of elastic deformation of fibrous composites with different resistance in compression and tension. The framework of the approach… read more here.

Keywords: composites different; compression; constitutive equations; different resistance ... See more keywords
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Constitutive equations for vertical upward two-phase flow in rod bundle

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Published in 2018 at "International Journal of Heat and Mass Transfer"

DOI: 10.1016/j.ijheatmasstransfer.2018.08.067

Abstract: Abstract In view of the quality assurance of two-phase flow simulations, CSAU (Code Scalability, Applicability, and Uncertainty) methodology and code V & V (Verification and Validation) have been proposed. The estimation of simulation uncertainty is… read more here.

Keywords: rod bundle; phase; two phase; phase flow ... See more keywords
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Constitutive equations for porous solids with matrix behaviour dependent on the second and third stress invariants

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Published in 2017 at "International Journal of Impact Engineering"

DOI: 10.1016/j.ijimpeng.2017.05.004

Abstract: Constitutive equations are developed for voided materials and ductile fracture taking into account possible effects of Lode angle in the yielding behaviour of the matrix. The Gurson criterion (Gurson, 1977) [4] is generalized to such… read more here.

Keywords: criterion; lode angle; stress; yield ... See more keywords
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Creep constitutive equations for as-received 9Cr1Mo steel

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Published in 2019 at "International Journal of Pressure Vessels and Piping"

DOI: 10.1016/j.ijpvp.2019.103947

Abstract: Abstract 9Cr1Mo has a wide application in petrochemical and power generation plants, prediction of its creep behavior is a major concern in these industries. In this paper, the creep behavior and creep lifetime of test… read more here.

Keywords: 9cr1mo steel; creep constitutive; creep behavior; received 9cr1mo ... See more keywords
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Microstructure evolution and constitutive equations for the high-temperature deformation of 5Cr21Mn9Ni4N heat-resistant steel

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Published in 2017 at "Journal of Alloys and Compounds"

DOI: 10.1016/j.jallcom.2016.09.230

Abstract: Abstract The high-temperature deformation behavior of 5Cr21Mn9Ni4N heat-resistant steel was studied using a Gleeble-1500D thermal simulation test machine for high-temperature compression tests. The deformation temperatures ranged from 1273 K to 1393 K, and the strain rates ranged… read more here.

Keywords: temperature; high temperature; temperature deformation; deformation ... See more keywords
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Settling of weighting agents in non-Newtonian fluids to off-shore drilling wells: Modeling, parameter estimation and analysis of constitutive equations

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Published in 2020 at "Journal of Petroleum Science and Engineering"

DOI: 10.1016/j.petrol.2019.106535

Abstract: Abstract High-density solids such as barite and hematite are generally added to drilling fluids to increase their density, allowing the control of subsurface pressures. However, a variety of problems in drilling wells has been related… read more here.

Keywords: drilling wells; agents non; weighting agents; settling weighting ... See more keywords
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Two-dimensional nonlinear stress and displacement waves for a new class of constitutive equations

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Published in 2018 at "Wave Motion"

DOI: 10.1016/j.wavemoti.2017.12.003

Abstract: Abstract The propagation of displacement waves and stress waves for implicit constitutive equations is investigated. This new class of constitutive equations contain Cauchy elastic and hyperelastic bodies as subclasses. We consider a particular subclass where… read more here.

Keywords: constitutive equation; stress; displacement waves; constitutive equations ... See more keywords
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Constitutive equations with pressure-dependent rheological parameters for describing ice creep

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Published in 2019 at "Journal of Glaciology"

DOI: 10.1017/jog.2019.31

Abstract: ABSTRACT Experimental data from creep tests on polycrystalline ice samples highlight not only the non-Newtonian behavior of ice but also suggest a critical dependence of the various rheological parameters upon the applied hydrostatic pressure. We… read more here.

Keywords: rheological parameters; constitutive equations; ice creep; ice ... See more keywords
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Constitutive Equations of Piezoelectric Layered Beams With Interdigitated Electrodes

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Published in 2018 at "IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control"

DOI: 10.1109/tuffc.2018.2844183

Abstract: This paper establishes the constitutive equations, or linear two-port models, of piezoelectric layered beams with interdigital electrodes (IDEs). The effect of the nontrivial field on the transduction is analyzed. Based on conformal mapping techniques, we… read more here.

Keywords: layered beams; piezoelectric layered; equations piezoelectric; constitutive equations ... See more keywords