A5100704469- Gear and Bearing Dynamics Analysis
- Tribology and Lubrication Engineering
- Mechanical Engineering and Vibrations Research
- Hydraulic and Pneumatic Systems
- Metallurgy and Material Forming
- Mechanical stress and fatigue analysis
- Plasma and Flow Control in Aerodynamics
- Microstructure and Mechanical Properties of Steels
- Metallurgical Processes and Thermodynamics
- Computational Fluid Dynamics and Aerodynamics
- Industrial Technology and Control Systems
- Advanced Sensor and Control Systems
- Gas Dynamics and Kinetic Theory
- Space Satellite Systems and Control
- Innovative Energy Harvesting Technologies
- Innovations in Concrete and Construction Materials
- Additive Manufacturing Materials and Processes
- Geotechnical and Geomechanical Engineering
- Manufacturing Process and Optimization
- Concrete and Cement Materials Research
- Laser and Thermal Forming Techniques
- Mechanical Failure Analysis and Simulation
- Innovation and Socioeconomic Development
- Oil and Gas Production Techniques
- Collaboration in agile enterprises
Chongqing University
2007-2023
Yangzhou University
2023
Hunan University
2021
Taiyuan University of Science and Technology
2010-2020
Taiyuan University of Technology
2020
Shanghai Maritime University
2018
Northwestern Polytechnical University
2006-2018
Chinese Academy of Sciences
2017-2018
State Key Laboratory of High Temperature Gas Dynamics
2018
Institute of Mechanics
2018
This paper evaluates the influence of mineral admixtures partially replacing cement, sea sand quartz, water fresh on ultra-high performance concrete (UHPC). The fluidity and mechanical properties were studied. Besides, impermeability, chloride resistance freeze-thaw investigated. Failure modes, scanning electron microscope (SEM) analysis, mass loss, relative dynamic modulus elasticity UHPCs after cycles conducted. results showed UHPC paste gradually increases with improvement water-binder...
This paper reports the design, fabrication and measurement of a springless cubic energy harvester. Based on flexible printed circuits, coils are fabricated onto both sides polyimide substrate then folded to box, meanwhile sealed free magnet inside box. As three different directions, vibration in all dimensions can cause change magnetic flux is effectively harvested. Output performance device theoretically experimentally investigated. Benefit from structure, maximum output achieved at low...
According to the current situation and characteristics of China's equipment manufacturing industry, this paper thinks that development path industry is construct network cluster innovation. It’s a system innovation network, which need improve enterprise integration capabilities through establishment main business leaders, focus on building innovative platform also collaboration environment support network. On basis, analyzes construction strategies cluster.
In this paper, a finite time fault-tolerant control problem is investigated for the spacecraft attitude stabilization issue, which subject to external disturbance torques and actuator failures. The approach developed in framework of observer based controller design. As stepping stone, simple novel finite-time first designed reconstruct synthetic uncertainty deriving form failures disturbances, by also compensated or restricted. Then, an enforce closed-loop system converge origin using...
The dynamic finite element model of entire gearbox, including gears, shafts, bearings and gearbox housing was established by using the truss element, spring tetrahedral at first. Then shock spectrum GWC6066 gotten according to German specification BV043/85. After converted into equivalent time-domain acceleration curve, vibration velocity, stress under double half-sine excitation were simulated. At last, resistance performance analyzed combining with strength criterion.
The Response Surface Method (RSM) and Simulated Annealing Algorithm (SAA) are utilized to analysis optimize the vibro-acoustic properties of gear system. A simple case is illustrated demonstrate capabilities acoustic optimization design method. results show that method based on RSM SAA can effectively reduce radiation noise, provide theoretical fundament guidance for further study complicated
Decomposition of austenite in steels from high to low temperatures is pearlite, bainite and martensite phase transformation. According studies, magnetic field promotes the three transformations. The phenomenons indicate transformations have coherence magnetics. There a transformation paramagnetism (γ) ferromagnetism (α) among all these three. Magnetic drive Δ G m plays an important role transition. was carried out at 300°C during different isothermal time. Combining results, it studied...
To research the key factor that affect on material characteristic of hot stamping, this paper studied spring-back problem forming ultra-high strength steel, "U" shaped part by using combination method numerical simulation and experimental verification. By obtaining data BR1500 HS isothermal tensile test, it established a thermal-mechanical coupled model which is based ABAQUS to analyze influences speed holding time properties. Simulation analysis showed that: When sheet metal faster than...
Large-size vehicle loaders are mainly used in various construction projects with complex working environment, which has a serious impact on the internal vibration of whole system. In this study, characteristics hydraulic planetary transmission loader considering influence external excitation evaluated theoretically and experimentally. The output torque four-stroke six-cylinder diesel engine is obtained by force calculation crank connecting rod mechanism. equivalent stiffness damping...
In this paper, the internal dynamic excitation of gear pair in a helical reducer bridge crane is numerically investigated, taking into account time-varying mesh stiffness, comprehensive error and meshing shock. The integral finite element model gearbox built by ANSYS software using APDL language. excitations are imposed on contact line to solve response gearbox. Using results as boundary conditions, acoustic established. surface sound pressure radiated noise field points solved with SYSNOISE...
The aerodynamic force acting on the pantograph by airflow is obviously unsteady and has a certain vibration frequency amplitude, while high-speed train passes through tunnel. In addition to behavior in open-air operation, compressive expansion waves tunnel will be generated due influence of blocking ratio. propagation compression affect pressure distribution cause stress state change significantly, which affects current characteristics pantograph. this paper, studied with method IDDES...
The waverider configuration has a wide application prospect in the design of hypersonic vehicles due to its excellent aerodynamic efficiency. Various kinds waveriders have been developed based on different basic flowfield, which can be chosen according requirements. However, it’s generally difficult for directly satisfy engineering requirements volume efficiency, trim, stability, etc. To overcome these drawbacks, paper proposes new method configuration. In generation process, leading edge...
The shock spectrum of gearbox was gotten according to German specification. And the equivalent time-domain acceleration curve converted from spectrum. After dynamic finite element model entire established by using truss element, spring and tetrahedral response including vibration velocity, stress subjected excitation were simulated. At last, anti-shock performance analyzed combining with strength criterion.