Results 61 to 70 of about 216,091 (172)

A Modified Eyring Equation for Modeling Yield and Flow Stresses of Metals at Strain Rates Ranging from 10−5 to 5 × 104 s−1

open access: yesAdvances in Materials Science and Engineering, 2015
In several industrial applications, metallic structures are facing impact loads. Therefore, there is an important need for developing constitutive equations which take into account the strain rate sensitivity of their mechanical properties.
Ramzi Othman
doaj   +1 more source

A Potential Function Derivation of a Constitutive Equation for Inelastic Material Response [PDF]

open access: yes, 1983
Physical and thermodynamic concepts are used to develop a potential function for application to high temperature polycrystalline material response. Inherent in the formulation is a differential relationship between the potential function and constitutive
Elfoutouh, N. A., Stouffer, D. C.
core   +1 more source

Constitutive Equation of Hot Deformation of ZL114A Alloy

open access: yesJournal of Harbin University of Science and Technology, 2018
At the condition of deformation temperature of 350 ~ 470 ℃,strain rate of 0. 001 ~ 10 s -1, deformation of 50%,hot compression tests for ZL114A alloy were carried out by Gleeble-1500D thermal simulation testing machine. The characteristics of true stress-
KANG Fu-wei   +3 more
doaj   +1 more source

On the constitutive relations for second sound in thermo-electroelasticity

open access: yesArchives of Mechanics, 2011
In papers [1] and [2] of 1982, Coleman, Fabrizio and Owen gave a derivation of implications of the second law of thermodynamics to describe second sound in rigid heat conductors, by using a natural extension to anisotropic media of the well-known ...
A. Montanaro
doaj   +1 more source

A Canonical Relativistic Approach to Quantize Electromagnetic Field in the Presence of Moving Magneto-Dielectric Media

open access: yes, 2009
A canonical relativistic formulation is introduced to quantize electromagnetic field in the presence of a polarizable and magnetizable moving medium. The medium is modeled by a continuum of four vectors in a phenomenological way.
Amooshahi, M.
core   +2 more sources

Analysis and Discussion of Constitutive Equation for High Temperature Creep of 316H Stainless Steel of ASME Code

open access: yesYuanzineng kexue jishu, 2023
ASME 2021 code provides constitutive equation for high temperature creep of 316H stainless steel. The paper aims to help engineers and researchers correctly evaluate the strain and creep damage of high-temperature equipment by using the equation. Firstly,
LI Zhi;MO Yafei;GAO Fuhai;ZENG Xiaojia;ZHAO Shouzhi
doaj  

Finite element analysis of notch behavior using a state variable constitutive equation [PDF]

open access: yes
The state variable constitutive equation of Bodner and Partom was used to calculate the load-strain response of Inconel 718 at 649 C in the root of a notch.
Abuelfoutouh, N.   +2 more
core   +1 more source

A COMPREHENSIVE CONSTITUTIVE EQUATION FOR GRANULAR MATERIALS

open access: yesTASK Quarterly, 2000
A constitutive equation is proposed for describing changes of states of granular materials, which are sufficiently characterised by the void ratio and the stress tensor. It may be considered as an extension of the Critical State concept.
GERD GUDEHUS
doaj  

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