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161
Coal‐wall spalling prevention mechanism using advance‐grooving pressure relief in the large‐mining‐height working face of a shallow coal seam
Published 2024-11-01“…The results show that: During the mining process of large mining height working face in shallow buried coal seam, the step change of static response of coal wall is induced by the transient instability of roof structure, and the high abutment pressure is formed on the coal wall. …”
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162
Influence of Mine Earthquake Disturbance on the Principal Stress of the Main Roadway near the Goaf and Its Prevention and Control Measures
Published 2021-01-01“…In the later stage of mine earthquake disturbance, the principal stress directions in the surrounding rock reverse rotation, and the reverse rotation angle of the principal stress direction in the roof is the largest. …”
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163
Failure Mechanism and Control of Lower Retracement Channel in Close-Distance Double-Thick Coal Seams
Published 2021-01-01“…The results show that the plastic failure and stress of the surrounding rock are obviously asymmetric; specifically, the closer the roof is to N0381 gob, the stronger the strata behavior is. …”
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164
EzSkiROS: enhancing robot skill composition with embedded DSL for early error detection
Published 2025-01-01“…This limits our ability to make predictions, including our ability to detect program bugs statically. Since running a robot is an expensive task, finding errors at runtime can prolong the debugging loop or even cause safety hazards. …”
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165
Influence of Non-uniform Wear on Modal Characteristics of Spur Gears
Published 2022-07-01“…The influence of non-uniform wear on the modal characteristics of gears under quasi-static condition is studied. Based on Hertz contact theory and Archard formula, a quasi-static wear model is established to simulate the wear of gear tooth surfaces. …”
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166
The Mechanical Criterion of Activation and Instability of Normal Fault Induced by the Movement of Key Stratum and Its Disaster-Causing Mechanism of Rockburst in the Hanging Wall Mi...
Published 2021-01-01“…Subsequently, three conceptual models of rockburst induced by the fault stress transfer, stress concentration of coal pillars, and fault structural instability were proposed. Based on the rock mechanics theory, the rockburst carrier system model of “roof-coal seam-floor” near the fault was established. …”
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167
Damage Evolution of Sandstone under Constant-Amplitude Cyclic Loading Based on Acoustic Emission Parameters and Resistivity
Published 2021-01-01“…In the real environment, besides static load, rock is more affected by cyclic load. …”
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168
Experimental Study on Uniaxial Compression Fracture Process of Marble Specimens with Circular Holes with Different Diameters
Published 2022-01-01“…After a long period of geological tectonic action, the rock mass develops defects such as pores and fissures of different sizes and scales. …”
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169
Study on Occurrence Mechanism of Coal Pillar in L-Shaped Zone during Fully Mechanized Mining Period and Prevention Technology
Published 2021-01-01“…The results show that a coal pillar with some confining pressure in the L-shaped zone is established by FLAC3D numerical simulation software, and the numerical simulation results indicate that the change in static load has a greater effect than dynamic load on coal pillar unstable failure; the static load plays a role in storing energy, and dynamic load plays a role in inducing rock burst; the bolt-mesh-cable support and high-pressure water jet unloading combined technology is put forward to prevent rock burst in roadways, and the numerical simulation results show that stress distribution of surrounding rock meets the model of strong-soft-strong (3S) structure, and the moment distribution is reasonable. …”
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170
Effect of molding processes on multiaxial fatigue strength in short fibre reinforced polymer
Published 2016-10-01“…This study concerns the multiaxial static and fatigue strength properties. Short-glass-fibre-reinforced phenolic-resin composites (SGP) molded by injection and compression processes were subjected to tensiontorsion combined static and fatigue tests at room temperature under various test conditions. …”
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171
Study on Structure Characteristic and Operating Parameter Interval of High-speed Multi-feature Gear Shaft
Published 2019-12-01“…The safety factor of dangerous interface is used to check the strength of shaft, and the ratio of three safety factor, i.e. contact strength of tooth surface, bending strength of tooth root and dangerous interface, is weighed to calculate the operating parameter interval under static condition. …”
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172
Study on Catastrophe Instability of Support System in Gypsum Goaf Based on Energy Dissipation Theory
Published 2018-01-01“…These parameters are ranked by their sensitivity from high to low, as is shown below: beam thickness, plastic zone width, room span, pillar width, and pillar height. …”
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173
Study of Simulation Test in Inclusion Rockburst
Published 2019-01-01“…The dynamic ejection failure of the rock fragments occurs when the degree of failure is severe, and the static failure occurs when the degree of failure is weak. …”
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174
Effect of molding processes on multiaxial fatigue strength in short fibre reinforced polymer
Published 2016-10-01“…This study concerns the multiaxial static and fatigue strength properties. Short-glass-fibre-reinforced phenolic-resin composites (SGP) molded by injection and compression processes were subjected to tensiontorsion combined static and fatigue tests at room temperature under various test conditions. …”
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175
A gendered analysis of adaptive capacity and food security in Makueni County, Kenya
Published 2025-01-01“…For female headed households, growing drought tolerant crops and changing planting dates reduced likelihood of food security while the effect of conservation agriculture was not statically significant. …”
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176
Research of Load and Contact Capacity of Micro-Segment Gear based on ARAMIS System
Published 2015-01-01“…At present,there are not unified formula for static strength to calculating the gear load and contact capacity of micro-segment gear,and also no specific research and analysis for gear load and contact capacity.By using the non-contact strain measurement system ARAMIS,the contact stress of the micro-segment gear under the condition of static loading is measured,and under the same experiment condition,the strain analysis of the location near the gear mesh point and tooth root of micro-segment gear and involute gear are respectively carried out,the principal strain figure of the gear end face is obtained.The force analysis of location selection on the same point of the two kinds of gear tooth profile are carried out,and the force condition of the two kinds of gear tooth profile are compared.…”
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177
Payload Distribution and Gear Strength Analysis of Gear Meshing Process Under the Typical Contact Condition
Published 2016-01-01“…It is suitable for the numerical simulation of the gear strength before and after running- in. 2The stable running status gear is simulated under static payload conditions,the tooth root maximum stress values are close to the calculated values of empirical formulas. …”
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178
STRAIN-RATE EFFECT ON THE STRESS CONCENTRATION IN A 45 STEEL PLATE WITH AN ELLIPTIC HOLE
Published 2020-01-01“…Therefore,based on the Johnson-Cook model,the stress concentration at the hole root of a typical 45 steel plate under dynamic loading is systematically analyzed using finite element method. …”
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179
Analysis on Force Transmission Characteristics of Two-Legged Shield Support under Impact Loading
Published 2018-01-01“…The setting force of the leg was provided by the preload of the equivalent spring, the static roof load was simulated using a slope signal, and the impact load was simulated using a step signal. …”
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180
The effect of core stabilization exercises and shock wave therapy in patients with radiculopathy
Published 2018-06-01“…Radiculopathy is a damage to the nerve root of the lumbar spine, which develops due to nerve root pressure and irritation. …”
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