Results 21 to 30 of about 216,091 (172)

Revealing the acoustic effects on heat transfer and material flow in ultrasonic assisted friction stir welding of dissimilar Al/Mg alloys

open access: yesJournal of Materials Research and Technology, 2023
Development of a reasonable constitutive equation is critical to realize accurate numerical prediction of ultrasonic vibration-assisted friction stir welding (UVaFSW) of dissimilar Al/Mg alloys and deepen the understanding of the synchronous interaction ...
Guanlan Zhang   +2 more
doaj   +1 more source

Prediction of FV520B Steel Flow Stresses at High Temperature and Strain Rates

open access: yesHigh Temperature Materials and Processes, 2015
In order to develop reliable constitutive equations for the simulation, the hot deformation behavior of FV520B steel was investigated through isothermal compression tests in a wide range of temperatures from 900 °C to 1100 °C at an interval of 50 °C and ...
Han Xiaolan   +4 more
doaj   +1 more source

Effect of nitrogen content on the hot deformation behavior of 0Cr16Ni5Mo martensitic stainless steel

open access: yes工程科学学报, 2017
The hot deformation behavior of 0Cr16Ni5Mo martensitic stainless steel with different nitrogen contents was studied on a Gleeble3800 thermal machine. The true strain-stress curves and deformed microstructures of the tested steels were investigated.
ZHANG Bao-li   +4 more
doaj   +1 more source

Method of modeling viscoelastic properties of oriented polymer materials using multi-barrier theory

open access: yesНаучно-технический вестник информационных технологий, механики и оптики
The results of modeling deformation processes of uniaxially oriented polymer materials are presented. The discription of two-barrier model is given, according to which polymer macromolecules can be in three stable states. The constitutive equation of the
V. V Golovina, P. P. Rymkevich
doaj   +1 more source

Thermodynamically consistent gradient elasticity with an internal variable

open access: yes, 2020
The role of thermodynamics in continuum mechanics and the derivation of the proper constitutive relations is a discussed subject of Rational Mechanics. The classical literature did not use the accumulated knowledge of thermostatics and was very critical ...
Ván, Peter
core   +1 more source

Stress relaxation and elastic follow-up using a stress range-dependent constitutive model [PDF]

open access: yes, 2012
Despite the availability of detailed nonlinear finite element analysis, some aspects of high temperature design can still be best addressed through more simplified methods.
Boyle, James
core   +1 more source

On a system of equations arising in viscoelasticity theory of fractional type

open access: yes, 2012
We study a system of partial differential equations with integer and fractional derivatives arising in the study of forced oscillatory motion of a viscoelastic rod.
Atanackovic, Teodor M.   +2 more
core   +1 more source

Traveling waves in one-dimensional nonlinear models of strain-limiting viscoelasticity [PDF]

open access: yes, 2015
In this article we investigate traveling wave solutions of a nonlinear differential equation describing the behaviour of one-dimensional viscoelastic medium with implicit constitutive relations.
Erbay, H. A., Şengül, Y.
core   +2 more sources

FE implementation of damage-coupled inelastic constitutive equation for P91 steel

open access: yesMechanical Engineering Journal
The objective of this study is to numerically evaluate the cyclic softening behavior and creep-fatigue damage of P91 steel. To achieve this, a damage-coupled inelastic constitutive equation is formulated by coupling the Chaboche-type viscoplastic ...
Masayuki ARAI, Akihiro MOTOKI
doaj   +1 more source

Application of non-contact strain measurement based on CCD camera in PMMA material constitutive model

open access: yesMaterials Research Express, 2021
The Jiangmen Underground Neutrino Observation (JUNO) will build a polymethyl methacrylate (PMMA) spherical vessel of a diameter of 35.4 meters. The constitutive model of PMMA is a key parameter for the design of PMMA structure.
Xiaohui Qian   +6 more
doaj   +1 more source

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