A5009310785- Gear and Bearing Dynamics Analysis
- Tribology and Lubrication Engineering
- Adhesion, Friction, and Surface Interactions
- Mechanical stress and fatigue analysis
- Mechanical Engineering and Vibrations Research
- Hydraulic and Pneumatic Systems
- Advanced machining processes and optimization
- Computer Graphics and Visualization Techniques
- Innovative concrete reinforcement materials
- 3D Shape Modeling and Analysis
- Structural Behavior of Reinforced Concrete
- Network Security and Intrusion Detection
- Network Packet Processing and Optimization
- Additive Manufacturing Materials and Processes
- Advanced Vision and Imaging
- Asphalt Pavement Performance Evaluation
- Medical Imaging Techniques and Applications
- Numerical methods in engineering
- Fire effects on concrete materials
- Metallic Glasses and Amorphous Alloys
- High Entropy Alloys Studies
- Civil and Geotechnical Engineering Research
- Refrigeration and Air Conditioning Technologies
- Image Enhancement Techniques
- Advanced Thermoelectric Materials and Devices
Jinan University
2025
Wright State University
2015-2024
Guangdong University of Technology
2022-2024
Harbin Institute of Technology
2021-2024
Changsha University of Science and Technology
2018-2022
Zhejiang University of Technology
2019-2022
University of South China
2010-2022
Beijing Institute of Technology
2022
Chinese Academy of Sciences
2004-2021
University of Calgary
2021
The additive manufacturing (AM) of Ni-based superalloys has attracted extensive interest from both academia and industry due to its unique capabilities fabricate complex high-performance components for use in high-end industrial systems. However, the intense temperature gradient induced by rapid heating cooling processes AM can generate high levels residual stress metastable chemical structural states, inevitably leading severe metallurgical defects superalloys. Cracks are greatest threat...
This paper aims to develop a mathematical model for investigating the nonlinear dynamic mixed friction behaviors, including hydrodynamic force, contact deformation, and displacements, of novel coupled bearing lubricated with low-viscosity fluid. The fully couples five-degrees-of-freedom rotor elastohydrodynamic lubrication bearing, considering unbalance exciting forces/comments caused by propeller rotor. A comparative analysis is carried out validate effectiveness present model. Through...
In this study, a transient, non-Newtonian, mixed elastohydrodynamic lubrication (EHL) model of involute spur gear tooth contacts is proposed. Unlike the contact between two cylindrical rollers, experience number time-varying parameters including normal load, radii curvature, surface velocities, and slide-to-roll ratio. The proposed EHL designed to continuously follow pair from root tip capture transient characteristics lubricated due these parameter variations, instead analyzing at discrete...
Abstract A model to predict load-dependent (mechanical) power losses of spur gear pairs is proposed based on an elastohydrodynamic lubrication (EHL) model. The EHL includes gear-specific time variations all key contact parameters such as the rolling and sliding velocities, radii curvature, normal load that a single continuous analysis tooth from its root tip can be performed under any condition ranging full-film mixed or boundary conditions. Predicted transient pressure film thickness...
In this study, the influence of basic design parameters and tooth surface modifications on mechanical (friction induced) power losses a helical gear pair is studied. A efficiency model based elastohydrodynamic lubrication (EHL) introduced. The used to simulate contact conditions an example within ranges parameter such as pressure helix angles, number teeth (module), major diameters quantify their impact losses. Variation with these are then weighed against other functional requirements...
In this study, the elastohydrodynamic lubrication (EHL) behaviour of high-speed spur gear contacts is investigated under dynamic conditions. A non-linear time-varying vibratory model pairs introduced to predict instantaneous tooth forces conditions within both linear and operating regimes. model, periodically mesh stiffness motion transmission error are used as excitations a constant damping ratio employed. This allows prediction steady-state response in form separation (contact loss). An...
In this study, the damping mechanism at interface of mating spur gear teeth is investigated. The dynamic behaviour a pair represented by two Degree-of-Freedom (DOF) nonlinear model with provided instantaneous tribological tooth contacts. shear stress distributions along surfaces are incorporated to formulate periodic mesh viscous damping. With assumption radii curvature contact can be ones pitch point, simplified expression for ratio formulated.
This paper presents a model to predict the crack formation fatigue lives of spur gear contacts operating under mixed lubrication conditions where surface roughnesses introduce intermittent metal-to-metal and severe stress concentrations. The proposed consists several submodels, including (i) load distribution determine normal tooth force along surface, incorporating any profile modifications manufacturing deviations, (ii) elastohydrodynamic customized handle transient contact gears, (iii)...
Nitrous acid (HONO) is an important photochemical precursor to hydroxyl radicals particularly in urban atmosphere, yet its primary emission and secondary production are often poorly constrained. Here, we measured HONO nitrogen oxides (NOx) at both the inlet outlet a busy tunnel (>30 000 vehicles per day) south China. Multiple linear regression revealed that 73.9% of inlet–outlet incremental concentration was explained by NO2 surface conversion, while rest directly emitted from with average...
In this study, the wear depths under different loads, speeds, lubricant temperatures, and surface roughness amplitudes are experimentally determined using a twin-disk rolling contact setup. A point model combining formulation Archard's equation in an iterative manner is developed to simulate process of experiments. By matching measured predicted profiles, coefficients operating conditions determined. It found that coefficient increases when either load or amplitude decreases as...