Results 1 to 10 of about 156,053 (159)

Application of data driven modeling and sensitivity analysis of constitutive equations for improving nuclear power plant safety analysis code

open access: yesNuclear Engineering and Technology, 2023
Constitutive equations in a nuclear reactor safety analysis code are mostly empirical correlations developed from experiments, which always accompany uncertainties.
ChoHwan Oh, Doh Hyeon Kim, Jeong Ik Lee
doaj   +1 more source

On the constitutive pseudoscalars of hemitropic micropolar media in inverse coordinate frames [PDF]

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2021
The paper is devoted to the constitutive pseudoscalars associated with the theory of hemitropic micropolar continuum. The basic concepts of pseudotensor algebra are presented. The pseudotensor form of the hemitropic micropolar elastic potential is given,
Eugenii V. Murashkin, Yuri N. Radayev
doaj   +1 more source

Uniqueness of Solutions in Thermopiezoelectricity of Nonsimple Materials

open access: yesEntropy, 2022
This article presents the theory of thermopiezoelectricity in which the second displacement gradient and the second electric potential gradient are included in the set of independent constitutive variables.
Francesca Passarella, Vincenzo Tibullo
doaj   +1 more source

Nonlinear multivariate constitutive equations for modeling hot deformation behavior

open access: yesMaterials Research Express, 2023
Nonlinear constitutive equations are proposed to model variations in flow stress as a function of strain rate and temperature during hot deformation. Modified constitutive are applied to seventy data sets about hot deformation of alloys.
Parag M Ahmedabadi
doaj   +1 more source

A Special Relativistic Exploitation of the Second Law of Thermodynamics and Its Non-Relativistic Limit

open access: yesEntropy, 2023
A thermodynamic process is a solution of the balance equations fulfilling the second law of thermodynamics. This implies restrictions on the constitutive relations. The most general way to exploit these restrictions is the method introduced by Liu.
Christina Papenfuss
doaj   +1 more source

Review on the current state of developing of advanced Creep Damage Constitutive Equations for high Chromium Alloy [PDF]

open access: yes, 2012
This paper presents a review of developing of creep damage constitutive equations for high chromium alloy (such as P91 alloy). Firstly, it briefly introduces the background of creep damage for P91 materials.
An, Lili   +3 more
core   +1 more source

Determination of a set of constitutive equations for an al-li alloy at SPF conditions [PDF]

open access: yes, 2015
© 2015 The Authors.Uniaxial tensile tests of aluminium-lithium alloy AA1420wereconducted at superplastic forming conditions. The mechanical properties of this Al-Li alloy were then modelled by a set of physicallybased constitutive equations.
Gao, H   +6 more
core   +1 more source

Constitutive tensor in the geometrized Maxwell theory

open access: yesDiscrete and Continuous Models and Applied Computational Science, 2022
It is generally accepted that the main obstacle to the application of Riemannian geometrization of Maxwell’s equations is an insufficient number of parameters defining a geometrized medium. In the classical description of the equations of electrodynamics
Anna V. Korolkova
doaj   +1 more source

The rheology of a suspension of nearly spherical particles subject to Brownian rotations [PDF]

open access: yes, 1972
A set of constitutive equations, valid for arbitrary linear bulk flows, is derived for a dilute suspension of nearly spherical, rigid particles which are subject to rotary Brownian couples.
Hinch, E. J., Leal, L. G.
core   +1 more source

New analytical results in the electromagnetic response of composite superconducting wire in parallel fields [PDF]

open access: yes, 1992
Analytical results are presented concerning the electromagnetic response of a composite superconducting wire in fields parallel to the wire axis, using the Maxwell equations supplemented with constitutive equations.
Niessen, E.M.J., Zandbergen, P.J.
core   +4 more sources

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