Results 11 to 20 of about 2,851 (159)

Early-warning evaluation and warning of rock burst using acoustic emission characteristics of coal sample failure

open access: yesMeitan kexue jishu, 2023
As the most common dynamic disaster of coal rock in deep coal mining, rock burst seriously affects the safe and efficient mining of coal resources. Accurate and timely to predict the rock burst is the best way to control and prevent it. In order to study
CHEN Jie   +6 more
doaj   +1 more source

Local Stiffness Assessment of Geogrid-Stabilized Unbound Aggregates in a Large-Scale Testbed

open access: yesApplied Sciences, 2023
This paper integrates and extends an earlier article presented at the 20th International Conference on Soil Mechanics and Geotechnical Engineering. The generation of a stiffened zone in the proximity of a geogrid is one of the primary mechanisms of ...
Mingu Kang   +4 more
doaj   +1 more source

Experimental study on particle breakage behaviors of rockfill under cyclic loadings

open access: yesYantu gongcheng xuebao, 2017
Using the large-scale dynamic triaxial apparatus, a series of cyclic drained triaxial shearing tests are performed on there kinds of rockfill materials with different confining pressures, consolidation stress ratios and dynamic stress amplitudes to ...
ZHANG Zhen-dong 1, 2, LI Guo-ying 1
doaj   +1 more source

Triaxial Creep Test and Particle Flow Simulation of Coarse-Grained Soil Embankment Filler

open access: yesFrontiers in Earth Science, 2020
In order to study the creep characteristics of the coarse-grained soil as embankment filler under long-term vehicle loading, the creep test was performed on coarse-grained soil using the large scale dynamic and static triaxial instruments, and the creep ...
Zhongming He   +3 more
doaj   +1 more source

Optimal Modeling of an Elevator Chassis under Crash Scenario Based on Characterization and Validation of the Hyperelastic Material of Its Shock Absorber System

open access: yesApplied Mechanics, 2022
A wide variety of hyperelastic rubber-like materials, exhibiting strong nonlinear stress–strain relations under large deformations, is applied in various industrial mechanical systems and engineering applications involving shock and vibration absorbers ...
Dimitrios Giagopoulos   +2 more
doaj   +1 more source

Laboratory Testing to Research the Micro-Structure and Dynamic Characteristics of Frozen–Thawed Marine Soft Soil

open access: yesJournal of Marine Science and Engineering, 2019
The use of artificial freezing can change the mechanical properties of marine clay. In the construction of cross passages in metro tunnels in which the artificial ground freezing (AGF) method is applied, freeze–thaw circulation and cyclic loading ...
Zhi Ding   +5 more
doaj   +1 more source

Multiphysical field coupling in unconventional oil and gas reservoirs

open access: yes工程科学学报, 2023
Research in the field of oil and gas development has focused on the production of unconventional reservoirs all over the world. Unconventional oil and gas reservoirs have poor flow conditions, and the interaction of flow, stress, and temperature fields ...
Wei-yao ZHU, Zhen CHEN, Xin-chun SHANG
doaj   +1 more source

Review and prospect of coal rock hydraulic fracturing physical experimental research

open access: yesMeitan kexue jishu, 2022
Physical simulation of hydraulic fracturing is an approximate representation of fracture evolution and its dynamic process, which represents an important direction of fracture evolution research.
Quangui LI   +8 more
doaj   +1 more source

Study on the Permanent Deformation and Dynamic Stress–Strain of Coarse-Grained Subgrade Filler under Cyclic Loading

open access: yesBuildings
Using coal gangue as a subgrade filler will produce good benefits, and its application prospects are very broad. It is of great engineering and scientific value to study the improvement method and dynamic characteristics of coal gangue subgrade filler ...
Hemeng Zhang   +3 more
doaj   +1 more source

Karl Popper and the Mechanisms of Hydrogen Embrittlement

open access: yesAdvanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

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