A5100703419- Tribology and Lubrication Engineering
- Metal Alloys Wear and Properties
- Microstructure and Mechanical Properties of Steels
- Geotechnical Engineering and Soil Mechanics
- Structural Behavior of Reinforced Concrete
- Structural Load-Bearing Analysis
- Coastal and Marine Dynamics
- Gear and Bearing Dynamics Analysis
- High Temperature Alloys and Creep
- Metal Extraction and Bioleaching
- Drilling and Well Engineering
- Wave and Wind Energy Systems
- Dynamics and Control of Mechanical Systems
- Tribology and Wear Analysis
- Geotechnical Engineering and Underground Structures
- Rock Mechanics and Modeling
- Vibration and Dynamic Analysis
- Hydraulic and Pneumatic Systems
- Innovative concrete reinforcement materials
- Iterative Learning Control Systems
- Structural Engineering and Vibration Analysis
- Metallurgy and Material Forming
- Advanced Photocatalysis Techniques
- Oil and Gas Production Techniques
- Structural Response to Dynamic Loads
Zhangzhou Normal University
2025
Affiliated Hospital of Qingdao University
2024
Qingdao University of Science and Technology
2019-2024
CCCC Wuhan Harbour Engineering Design and Research (China)
2022-2024
Qingdao University
2024
Tongji University
2021-2023
Ministry of Transport
2022
Xi'an University of Technology
2018-2021
Chinese Academy of Sciences
2021
China National Offshore Oil Corporation (China)
2021
A random anisotropic hollow scatterer is discussed and the far-zone characteristics of scalar light waves scattered by this type medium are theoretically analyzed. The results show that spectral density distributions have interesting patterns “central ellipses peripheral circles” or circles ellipses”, which decided outer inner correlation lengths scatterer. This phenomenon provides some new insights into generation manipulation far field, can be applied in reconstruction scattering medium’s...
The investigation was carried out on the evolution behavior of carbides precipitated in 2.25Cr-1Mo-0.25V steel during heat treatment. Four types M3C, M23C6, M7C3 and MC were identified. mass fraction each type carbide calculated dissolution particles found to occur tempering. This could be caused by annihilation dislocations became energetically unstable dissolved into matrix. In addition, a two-step transformation mechanism proposed for Cr-Fe-rich carbide. changes metallic composition...
Finger seals provide favourable flexible dynamic performance and a low level of leakage that is less than brush graphite seals. However, the hysteresis caused by friction between different finger slices or slice back plate strongly affects working stability. In addition, wear properties feet rotor runway can adversely affect Based on tribological mechanism, wear-resistant coatings satisfactory solution to these problems. For this purpose, simulations seal are first performed in ANSYS verify...
Purpose The purpose of this study is to design a closed hydrostatic guideway has the ability resist large-side load, pitch moments and yaw moments, good stiffness damping characteristics, provides certain beneficial guidance for large-span on basis providing large vertical load bearing capacity. Design/methodology/approach Reynolds’ equation flow continuity are solved simultaneously by finite difference method, perturbation method disturbance used calculating dynamic characteristics. static...
This paper proposes an improved lumped parameter method for calculating the static characteristics of multi-recess hydrostatic journal bearings. The can estimate total pressure distribution in circumferential direction by introducing control volume middle each inter-recess land, and utilizing flow continuity equations recess with assumption that distributions are parabolic on land. Then fluid film force be calculated. calculation accuracy traditional is comparatively discussed under...
In order to improve the adaptability and durability of pile foundation under marine environment, an innovative type UHPC-RC composite is proposed, which composed upper prefabricated UHPC pipe pile, shear key connection a lower cast-in-place RC pile. Since guarantee force transmission between piles, push-out tests single multiple keys were conducted, followed by axial compressive joint. Combined with finite element analyses, reasonable height ratio capacity investigated. Then, calculation...
The mechanical and deformation mechanism of coral-reef limestone is vital for the stability safety infrastructures built on ground composed those materials. Upon loading, strain softening behavior occurs, usually due to nonuniform cementation distribution, within samples may break up gradually reduce bearing capacity. In order study their features, uniaxial compression tests were carried out in this study, and, based test results, a binary-medium-based constitutive model was formulated,...
In order to study the characteristics of pile–rock action steel pipe driven pile in coral reef limestone stratum, at China–Maldives Friendship Bridge site was selected carry out indoor physical and model tests with red sandstone as control group. The test outcomes indicate following: (1) when substantial deformation is permitted, has a considerable strength dispersion, low post-peak stress decrease rate, high residual strength, roughly 30% peak strength; (2) penetrates limestone, top load...
Abstract In order to find a good friction pair for the finger seal, pin-on-disc tests matching actual working conditions of seal are designed based on performance simulation and similarity principle PV value, in which characteristics between pins with two different materials (C/C composite or cobalt-base alloy GH605) discs coatings (Cr3C2 Al2O3) tested analyzed respectively; test results show that wear loss all pairs increases load increasing, but coefficient C/C pin (no matter contacting...
For the island and reef project formed by filling calcareous sand, problems of wide particle size distribution (PSD) complex mechanical properties have to be faced. Therefore, in order provide basic parameters for construction project, triaxial shear tests were carried out on sands with five different typical PSDs. The results showed that as gradation became narrower, axial strain corresponding strain-softening point all a decreasing trend their differences gradually decreased; confining...
Carbon seal and finger are both advanced used in aero-engine gas turbine. Compared with the seal, application of carbon is longer its technology more mature. But also has excellent sealing performance, it much economical than seal. Based on a self-developed dynamic test rig, experimental studies performances under high-speed high-pressure conditions carried out this paper, comparison leakage durability two seals in-depth to find possibility that replacing which can provide references for...
In engineering practice, the measured bearing capacity of a sand pile composite foundation in mucky soil layer is much larger than design value. Based on construction and load application process, method calculating based effective stress was proposed. Cavity diameter expansion simplified into planar problem, cavity theory used to establish expression rate displacement horizontal increase. e-p curve calculation degree consolidation, relationships between vertical void ratio were obtained....