A5091306164- Gear and Bearing Dynamics Analysis
- Tribology and Lubrication Engineering
- Advanced machining processes and optimization
- Mechanical Engineering and Vibrations Research
- CCD and CMOS Imaging Sensors
- Analog and Mixed-Signal Circuit Design
- Machine Fault Diagnosis Techniques
- Hydraulic and Pneumatic Systems
- Structural Engineering and Vibration Analysis
- Energy Harvesting in Wireless Networks
- Structural Behavior of Reinforced Concrete
- Advancements in Semiconductor Devices and Circuit Design
- Wireless Power Transfer Systems
- Innovative Energy Harvesting Technologies
- Magnetic Bearings and Levitation Dynamics
- Lubricants and Their Additives
- Interconnection Networks and Systems
- Advanced Combustion Engine Technologies
- Adhesion, Friction, and Surface Interactions
- Vehicle Noise and Vibration Control
- Microstructure and Mechanical Properties of Steels
- Software-Defined Networks and 5G
- Civil and Geotechnical Engineering Research
- Structural Load-Bearing Analysis
- Electrohydrodynamics and Fluid Dynamics
Tianjin University
2013-2024
Guangxi University
2024
Anhui Polytechnic University
2021-2022
Shanghai University
2020-2021
Chang'an University
2006
Droplet sorting and enrichment, as a prominent field within microfluidic technology, represent pivotal stage in the manipulation of droplets particles. In recent times, droplet methods based on lab-on-disk (LOD) have garnered significant interest among researchers for their inherent merits, including high throughput, ease operation, seamless device integration, independence from supplementary driving forces. This study introduces centrifugal force-driven chip comprising spiral microchannels....
Due to their excellent stability and zero leakage capability, thrust bearings with herringbone spiral grooves are frequently used in transmission mechanisms. However, the lubrication mechanism of has not been clearly understood explained, preventing optimization bearing performance. Thus, this paper is devoted solving problem by building a three-dimensional finite element flow model. In model, change viscosity temperature considered using Roelands equation, turbulence cavitation taken into...
Due to bolt looseness or operating ambient temperature, fit clearance can often be found between the outer ring and housing. The vibration characteristics of a cylindrical roller bearing with localized defects are greatly affected by accuracy fault diagnosis may reduced. Thus, mathematical model for was constructed interaction housing described. classical were modeled, such as inner defect, defect defect. relative experiments conducted check model. Then, it that RMS (Root Mean Square)...
Due to the variable working conditions, there are compound defects in gear shaft-bearing system easily, vibration signals very complex, and fault diagnosis of becomes more difficult. Thus, a 36 degrees freedom (36-DOFs) dynamic model is established for discussing characteristics system, pair spalling defect considered, localized on inner raceway outer supporting bearing, work conditions contain speed, load, speed fluctuation, load fluctuation. The obtained signal processed by short-time...
The bearing-rotor-gear system is an important mechanical component for transmitting motion and power. Due to the complex responses, condition assessment of transmission becomes more difficult. Thus, a model with misaligned rotor built implementing response analysis. misalignment realized by offset connection couplings, creative excitation force transferred bearing inner ring through rotor. constructed checked corresponding experiment. From simulation results, it found that vibration...
As an important component, the gear pair is frequently used in mechanical transmission. If there a localized spalling defect on pair, double shock phenomenon vibration response can be observed. In order to reveal mechanism, 8DOFs dynamic model for established, symmetric and asymmetric rectangular defects are considered, torsional deformation introduced. Meanwhile, change law of during expansion explored. From results, caused by multiple changes meshing stiffness, amplitude distribution range...
Purpose Herringbone groove thrust bearings are typically used in high-speed, light-load applications, such as spindle motors for hard disk drives. In the past researches, effect of shaft misalignment was little considered. This study aims to reveal effects on microscopic flow regime water-lubricated herringbone bearing. Design/methodology/approach The liquid film a bearing investigated by computational fluid dynamics. micro-grooves field were carefully explored. Two-dimensional films at four...
A self-calibration method to calibrate the nonlinearity due capacitance mismatch in successive approximation register (SAR) analog-to-digital converter (ADC) is presented. It focuses on calibrating most significant bit (MSB) array split-capacitor main DAC (split-MDAC) by using a calibration (CDAC) that contains multiple sub-CDACs. Every MSB has its corresponding sub-CDAC CDAC, which enhances efficiency. To verify method, 14 bit, 500 kS/s SAR ADC implemented, and it manufactured 0.35 μm 2P4M...
To reduce the energy consumption as well thermal problem of wireless routers (WRs) in a network-on-chip (WiNoC) for high performance computing (HPC) is critical efficiency since WRs consume lot and generate heat. Using multicast transmission one techniques to achieve HPC full-connected WiNoC (full-WiNoC) architecture (i.e., one-time multiple receivers). This paper presents that non-multicast members WRs) do not switch off their power full-WiNoC waste energy. solve this problem, we propose...
In the defect diagnosis of gear-shaft-bearing system with compound defects, generated vibration signals are complicated. addition, information acquired by a single sensor is easily affected uncertain factors, and low diagnostic accuracy caused when traditional methods used, which cannot meet high-precision requirements. Therefore, method developed to identify types degrees efficiently. this method, collected using multiple sensors, dual-tree complex wavelet optimal weighting factor (OWF)...
For the analysis on deformation of flexible ring gears in spur gear pairs, complete is discretized, and boundary condition added to connecting points develop a calculation method for deformation. The ovality index used describe degree gears, then influences ring-gear width spalling defects are discussed. result shows that caused by pair meshing force, deformed shape close an ellipse. In single-tooth interval main form being stretched, while double-tooth meshes, bending When rims increased,...
The modified teeth are deliberately manufactured to mitigate the stress concentration generated by offset components, which makes equipment more susceptible localized failures. Therefore, this paper presents a model aimed at investigating meshing characteristic of gear pair with modification and crack failure. In model, tooth deformation force transmission determined based on slice coupling theory. torsional produced eccentric load distribution is considered complemented calculation method....