A5100334396- Structural Response to Dynamic Loads
- High-Velocity Impact and Material Behavior
- Combustion and Detonation Processes
- Transportation Safety and Impact Analysis
- Hydraulic Fracturing and Reservoir Analysis
- Drilling and Well Engineering
- Structural Engineering and Vibration Analysis
- Fire effects on concrete materials
- Advanced Numerical Analysis Techniques
- Cellular and Composite Structures
- Geophysical Methods and Applications
- Rock Mechanics and Modeling
- Structural Load-Bearing Analysis
- Metal Forming Simulation Techniques
- Geotechnical Engineering and Analysis
- Inorganic Fluorides and Related Compounds
- Hydrogen Storage and Materials
- Ammonia Synthesis and Nitrogen Reduction
- Forest, Soil, and Plant Ecology in China
- Geomechanics and Mining Engineering
- Mechanical stress and fatigue analysis
- Mechanical Engineering and Vibrations Research
- Geotechnical Engineering and Underground Structures
- Geotechnical Engineering and Soil Stabilization
- Structural Behavior of Reinforced Concrete
Changsha University of Science and Technology
2024
Hunan Provincial Science and Technology Department
2024
Beijing University of Technology
2024
Luoyang Institute of Science and Technology
2020-2022
South China University of Technology
2021
Beijing Institute of Water
2021
Kyushu University
2015
Daqing Oilfield General Hospital
2013
Nanyang Technological University
2010
National Formosa University
2010
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In this paper, UR50 ultra-early-strength cement-based self-compacting high-strength concrete slabs (URCS) have been subjected to contact explosion tests with different TNT charge quality, aiming evaluate the anti-explosive performance of URCS. experiment, three kinds reinforced reinforcement ratios and a normal slab (NRCS) were used as control specimen, curing time URCS is 28 days 24 h respectively. The research results show that has stronger anti-explosion ability than NRCS. failure mode...
Reinforcement is one of the important factors affecting anti-blast performance reinforced concrete (RC) slabs. In order to study impact different reinforcement distribution and blast distances on RC slabs, 16 model tests were carried out for slab members with same ratio but proportional distance distances. By comparing failure patterns slabs sensor test data, dynamic response was analyzed. The results show that, under contact explosion non-contact explosion, damage degree single-layer more...
Time-varying loads, manufacturing errors, and assembly errors are the main factors leading to performance degradation of planetary roller screw mechanism. This paper proposes a comprehensive analysis method for mechanism caused by time-varying loads errors. Firstly, simulation model was established its effectiveness verified. A quantitative conducted on influence load distribution, revealing load-bearing under Secondly, loading experiments were mechanism, divided into normal stage,...
Composite lining of deep buried water conveyance tunnel for bearing high internal pressure is a new type applicable structure. However, up to date, no effective method available calculate the stress In this paper, simplified algorithm, which can be used distribution composite accurately but costs little computational resource, proposed. This based on elastic theory, takes effect and surrounding rock into consideration, respectively. Then, in infinite body derived basis Lame solution....
Reducing the damage of structures under stress wave is one popular and challenging issues in field protection engineering. In this study, effect plastic modified concrete as an attenuation layer on was investigated through large-scale explosion tests. The volume ratios particles used replacement material were 2%, 4%, 8%. Two explosions each group to analyze change pressure layer. Experimental results showed that low-impedance material, can reduce transmitted concrete, elastic–plastic...
Abstract The Chang7 group in Ordos Basin usually shows low brittleness index, high differential principle stress and little natural fracture, which makes it difficult to generate complex fractures with traditional rate hydraulic fracture practice. During a geomechanical test on core samples, were unexpectedly found inside the sample due fatigue failure after cyclical loading below gradient. Based cyclic tests cores large-scale mockups, fracturing technology was developed specific operation...
Abstract Huge oil reserves are located in ultra-low permeability reservoirs the Ordos basin China. There three key characteristics associated with these reservoirs: low reservoir quality (10 to 13% porosity), (0.3 2.0 mD), and pressures (pressure gradients of 0.0075 0.009 MPa/m). The Chang 6 formation Huaqing field is classified as reservoirs. Water injection maintain pressure important develop horizontal wells. Fracturing design optimization improving well production development...
In order to investigate the local failure modes and damage effects of reinforced concrete (RC) beams under contact explosion, experimental studies RC with same size different TNT charge masses were conducted. tests, typical engineering scale prototype designed for frame structures used as research objects. Through four independent explosion characteristics observed at masses, influence on was analyzed. The results show that undergo types such front crater, side breakdown, back collapse...
In order to study the failure mode and anti-explosion performance of PODZ coated square reinforced concrete slabs under contact explosion, were tested explosion conditions. test, slab commonly used in floor design building structures was as research object. Through 11 independent tests, influence different coating thickness on analyzed, modes damage characteristics observed at charges TNT mass The results show that main is crater front conical shape bulge POZD back. bulging mainly due...
In this paper, the diffusion behavior of hydrogenated amorphous carbon into Co-Pt-TiO2 and Ruthenium films was first investigated. Impact on composite film its in ruthenium were studied using Time-of-Flight Secondary Ion Mass Spectroscopy. Magnetic coercivity drop observed for coated with hybrid overcoat at varied thickness ratio. is widely used perpendicular magnetic recording. Carbon depth profile showed that readily diffuses because porous structure. However, limited even annealing up to...
The mechanical properties of the zeolite model with cellular structure as a unit cell were studied via simulation. Four models selected, and traditional compared by finite element analysis. results demonstrate that structures possess better behavior under loading, accompany uniform distribution structural stress less concentration. In addition, effect porosity on was studied. both yield strength elastic modulus for decrease increase porosity.
Abstract Mechanical activation of a 1:4:1 molar mixture Mg(NH 2 ) , LiH, and LiNH by ball milling under Ar (400 rpm, 20 h) results in composite which is further used dehydrogenation experiments using TG‐DTA (140‐400 °C) with mass spectrometric gas detection.
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PDF HTML XML Export Cite reminder Study on the Interaction between Shear stress and Design Method of Anchored Structures DOI: 10.59238/j.pt.2006.05.002 Author: Affiliation: Clc Number: U469.6 Fund Project: Article | Figures Metrics Reference Related Cited by Materials Comments Abstract:Anchorage structures are recognized as technologically advanced both at home abroad, their contribution to human engineering construction is enormous. However, there still a number unquestionable problems in...