Results 11 to 20 of about 35,760 (296)

Cyclic constitutive equations of rock with coupled damage induced by compaction and cracking

open access: yesInternational Journal of Mining Science and Technology, 2022
In this paper, the cyclic constitutive equations were proposed to describe the constitutive behavior of cyclic loading and unloading. Firstly, a coupled damage variable was derived, which contains two parts, i.e., the compaction-induced damage and the ...
Chonghong Ren   +4 more
doaj   +3 more sources

Modeling Elastomer Compression: Exploring Ten Constitutive Equations. [PDF]

open access: yesMaterials (Basel), 2023
This paper presents the results of research aimed at assessing the effectiveness of ten selected constitutive equations for hyperelastic bodies in numerical modeling of the first compression load cycle of a polyurethane elastomer with a hardness of 90 Sh
Kut S, Ryzińska G.
europepmc   +2 more sources

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

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

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

Determination of the material constants of creep damage constitutive equations using Matlab optimization procedure [PDF]

open access: yes, 2015
Creep damage constitutive equations based in continuum damage mechanics are characterized by their complexity due to the coupled form of the multi-damage state variables over a wide range of stresses.
Xu, Qiang   +3 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

Constitutive Relationship Proposition of Marine Soft Soil in Korea Using Finite Strain Consolidation Theory

open access: yesJournal of Marine Science and Engineering, 2020
This paper proposes representative constitutive relationship equations of dredging and reclamation soft soil in Korea. The marine soft soils were sampled at 23 dredged-reclaimed construction sites in the Busan, Gwangyang, and Incheon regions in Korea ...
Sang Hyun Jun, Hyuk Jae Kwon
doaj   +1 more source

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