Results 11 to 20 of about 397,795 (293)

Assessment of cyclic deformation and critical stress amplitude of jointed rocks via cyclic triaxial testing [PDF]

open access: yesJournal of Rock Mechanics and Geotechnical Engineering, 2023
Jointed rock specimens with a natural replicated joint surface oriented at a mean dip angle of 60° were prepared, and a series of cyclic triaxial tests was performed at different confining pressures and cyclic deviatoric stress amplitudes.
Waranga Habaraduwa Peellage   +2 more
doaj   +2 more sources

Dynamic Recrystallization Behavior and Critical Conditions of SiCp/A1-Cu Composite

open access: yesJournal of Aeronautical Materials, 2017
Using the Gleeble-1500D simulator, the high temperature plastic deformation behavior of 40%SiCP/Al-Cu composite were investigated at 350-500℃ with the strain rate of 0.01-10 s-1. The stress-strain curves were obtained during the tests.
HAO Shiming   +4 more
doaj   +2 more sources

Dynamic mechanical characteristics of deep Jinping marble in complex stress environments

open access: yesJournal of Rock Mechanics and Geotechnical Engineering, 2023
To reveal the dynamic mechanical characteristics of deep rocks, a series of impact tests under triaxial static stress states corresponding to depths of 300–2400 m were conducted.
Chendi Lou   +8 more
doaj   +2 more sources

Determination of flow stress and the critical strain for the onset of dynamic recrystallization using a sine function

open access: yes, 2014
A new model has been developed to estimate the flow stress under hot deformation conditions up to the peak of the stress-strain curves. The model is constructed on the basis of the general form of sine functions by introducing an additional exponent. Besides, an equation is derived from the model, which could be used to predict the critical strain for ...
Solhjoo, Soheil   +1 more
core   +6 more sources

Depinning with dynamic stress overshoots: A hybrid of critical and pseudohysteretic behavior [PDF]

open access: yesPhysical Review E, 2003
A model of an elastic manifold driven through a random medium by an applied force F is studied focussing on the effects of inertia and elastic waves, in particular {\it stress overshoots} in which motion of one segment of the manifold causes a temporary stress on its neighboring segments in addition to the static stress. Such stress overshoots decrease
Schwarz, J. M., Fisher, Daniel S.
openaire   +3 more sources

Effects of the Ground Reinforcement on the Dynamic Behaviors of Compacted Loess Embankment with Ballasted Track

open access: yesBuildings, 2023
An embankment is needed to satisfy the requirements for the longitudinal slope of railway lines, and ground reinforcement is also generally required in loess regions. The present study attempted to understand the effects of different ground reinforcement
Xinsheng Wei   +3 more
doaj   +1 more source

Dynamic strength of fly ash-modified loess subgrade under influences of drying-wetting cycle

open access: yesYantu gongcheng xuebao, 2020
The traffic load and the drying-wetting cycle have an important influence on the strength characteristics and stability of fly ash-modified loess subgrade. To illustrate the influences of drying-wetting cycle on the strength of the fly ash-modified loess,
ZHONG Xiu-mei 1, WANG Qian 1, LIU Zhao-zhao 1, 2, BAI Lan 3, MA Jin-lian 1, LIU Fu-qiang 1, 2, LI Na1, WANG Jun 1
doaj   +1 more source

Effect of stress pulse shape on the dynamic fracture of soda-lime glass [PDF]

open access: yesEPJ Web of Conferences, 2021
The goal of this paper is to evaluate the tensile strength and fracture behavior of the soda lime glass under static and dynamic loading using Brazilian tests.
Buchar Jaroslav, Trnka Jan
doaj   +1 more source

Physical modeling of long-term dynamic characteristics of the subgrade for medium–low-speed maglevs

open access: yesRailway Engineering Science, 2023
To investigate the dynamic characteristics and long-term dynamic stability of the new subgrade structure of medium–low-speed (MLS) maglevs, cyclic vibration tests were performed under natural and rainfall conditions, and the dynamic response of the ...
Minqi Dong   +6 more
doaj   +1 more source

An experimental study of the dynamic characteristics of the undisturbed laterite under graded cyclic loading

open access: yesShuiwen dizhi gongcheng dizhi, 2022
In order to study the dynamic characteristics of the undisturbed lateritic soil subgrade under cyclic loading, the dynamic triaxial tests of undisturbed laterite are carried out with the SDT-20 dynamic triaxial apparatus.
Rui MU   +5 more
doaj   +1 more source

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