Results 11 to 20 of about 181,033 (264)

Stress relaxation constitutive model of rock based on Hausdorff derivative. [PDF]

open access: yesPLoS ONE
Stress relaxation is a key time-dependent response that governs the long-term stability of deep underground rock engineering. In this study, staged uniaxial and triaxial stress relaxation tests on sandstone were carried out using an MTS815.02 triaxial ...
Yuemei Li
doaj   +2 more sources

Analyzing and modelling the accelerated stress relaxation caused by pulsed current of Ti2AlNb alloy foils [PDF]

open access: yesScientific Reports
Analyzing the electrically-assisted stress relaxation behavior of Ti2AlNb alloy is beneficial for improving the forming accuracy of Ti2AlNb alloy thin-walled components.
Jie Zhao   +4 more
doaj   +2 more sources

Stress relaxation in tunable gels

open access: yesSoft Matter, 2021
Molecular dynamics shows how stress relaxation of tetra-PEG hydrogels with hybrid (permanent + reversible) crosslinks is set by the strength and concentration of the reversible bonds, which provides a way to improve the responsivity of these gels.
Chiara Raffaelli, Wouter G. Ellenbroek
openaire   +4 more sources

Effect of stress relaxation on accelerated physical aging of hydrogenated nitrile butadiene rubber using time-temperature-strain superposition principle

open access: yesAdvanced Industrial and Engineering Polymer Research, 2019
While the stress relaxation is a common phenomenon for polymers, its effect on the stress/strain accelerated aging of the hydrogenated nitrile butadiene rubber (HNBR) cannot be ignored.
Qidi Peng   +3 more
doaj   +1 more source

Fractional Stress Relaxation Model of Rock Freeze-Thaw Damage

open access: yesAdvances in Materials Science and Engineering, 2021
Freeze-thaw cycle is a type of fatigue loading, and rock stress relaxation under freeze-thaw cycles takes into account the influence of the freeze-thaw cycle damage and deterioration.
Q. Liu   +7 more
doaj   +1 more source

Comparison of the effect of relaxation and biofeedback-assisted relaxation on stress and anxiety score in patients with mild hypertension [PDF]

open access: yesفصلنامه دانشگاه علوم پزشکی جهرم, 2011
Introduction:Anxiety and stress are known to increase blood pressure. Psychological methods and behavioral therapy are appropriate and low-cost methods in hypertensive patients.
Jamshid Najafian, Afshan Akhavan Tabib
doaj  

After stress comes relax(ation)

open access: yesNew Journal of Physics, 2015
Viscoelastic materials take a finite time to relax and dissipate stress and this time scale is directly connected to the microstructure of the material itself. In their paper, Gomez-Solano and Bechinger (2015 New J. Phys.
Lucio Isa
doaj   +1 more source

Experimental mechanics and numerical prediction on stress relaxation and unrecoverable damage characteristics of rubber materials

open access: yesPolymer Testing, 2021
Stress relaxation and unrecoverable damage deformation are common phenomenon in rubber materials, which greatly induces instability of geometrical dimension and deteriorates the mechanical performances.
D.X. Leng   +5 more
doaj   +1 more source

Modeling and Verification of Stress Relaxation Behavior of Ti-6Al-4V [PDF]

open access: yesMATEC Web of Conferences, 2020
The phenomenon of gradual decrease of internal stress with the deformation of material maintained under the precondition of certain temperature and initial stress or pre-strain is called stress relaxation.
Zhang Xingzhen   +4 more
doaj   +1 more source

Study on stress relaxation characteristics of FGH95 powder superalloy treated by laser shock peening

open access: yesMaterials Research Express, 2022
Aiming at the phenomenon that the residual stress induced by Laser Shock Peening (LSP) will relax and redistribute under various loads, temperature, cyclic load, and the dual treatment of temperature and cyclic load on the residual stress relaxation of ...
Haiyan Zhu   +7 more
doaj   +1 more source

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