A5101907407- Vibration Control and Rheological Fluids
- Hydraulic and Pneumatic Systems
- Structural Engineering and Vibration Analysis
- Brake Systems and Friction Analysis
- Seismic Performance and Analysis
- Advanced Manufacturing and Logistics Optimization
- Pigment Synthesis and Properties
- Magnetic Bearings and Levitation Dynamics
- Elevator Systems and Control
- Advanced materials and composites
- Industrial Technology and Control Systems
- Vibration and Dynamic Analysis
- Vehicle Dynamics and Control Systems
- Structural Health Monitoring Techniques
- Effects of Vibration on Health
- Soft Robotics and Applications
- Recycling and utilization of industrial and municipal waste in materials production
Chongqing University
2022-2025
East China Jiaotong University
2020-2023
Magnetorheological (MR) brake is a sort of electromagnetic that uses the controllable output characteristics MR fluid for braking. In this paper, an with double disc was developed to improve braking performance conventional brakes. The effective damping gaps were increased from traditional two sections four by increasing single disc. By reasonably arranging non-magnetic sleeve inside brake, magnetic flux lines better guided gaps, which utilization rate field, effectively enhanced...
In order to solve the high-frequency vibration problem of industrial pipeline in petrochemical enterprises, a tuned mass damper (TMD) based on magnetorheological (MR) technology was proposed. The magnetorheological-tuned (MR-TMD) can reduce response structure by tuning resonance with system, it also have semi-active control characteristics MR devices. By analyzing signals collected site, relevant design requirements and parameters were determined. optimal frequency ratio, passive damping,...
Abstract Satellites are suffered from a series of external loads transmitted the satellites-rocket interface during launch phase. The satellite can be caused to experience broadband vibration by those loads. Such may lead failure sensitive precision instruments inside satellite. magnetorheological(MR) damper suffer due its internal factors or environmental conditions operation. Under such conditions, addressing requirement isolation systems and performance degradation MR dampers,...
Due to fluid excitation and the vibration of connected equipment, industrial pipelines are prone long-term medium-high frequency small amplitude vibration. Magnetorheological (MR) dampers with a multi-stage squeeze plate structure were proposed solve problem in pipeline. The dynamic characteristics pipeline analyzed determine installation position MR dampers. mechanical properties squeeze-mode tested, hyperbolic tangent model damper was established. control built for simulation analysis. In...
Abstract In order to improve the environmental adaptability and interaction stability of industrial robotic arms, a flexible joint with variable damping stiffness based on magnetorheological (MR) technology was proposed. The mechanical models for MR were established, relationship between cam surface element derived energy method. Subsequently, variation patterns equivalent prototype under different excitations experimentally tested, test results show that its properties meet design...
In order to solve the problems of low magnetic field utilization rate and volume-torque ratio traditional magnetorheological (MR) brake under a volume constraint, rotary MR with multiple fluid flow channels was proposed. The flux guided into external axial channel by inserting non-magnetic ring in middle conduction sleeves which could improve circuit structure greatly, working area where producing rheological effect increased, effective damping gaps were also increased from two sections four...
Magnetorheological (MR) damper performance is evaluated only by single-field analysis in the design process, which can easily lead to larger errors. Based on this, a simulation method of MR considering multiphysics coupling was proposed. According certain automobile shock absorber requirement, an suitable for suspension designed. The mechanical model, electromagnetic field flow and structural stress model were deduced established. To investigate damping more accurately, established COMSOL...
In order to improve the braking performance of magnetorheological (MR) brake, a new MR brake with parallel multi-channel structure was developed in this paper. The three layers axial damping gaps were utilized by using magnetic conductivity material, and double excitation coils also adopted effectively performance. torque temperature characteristics analyzed theoretically, electromagnetic field simulated verified. Braking tested, torque, time obtained. test results show that under condition...
Abstract Vibration isolation performance of seat suspension plays a critical role in protection drive’s physical health as the last barrier. In this paper, integrated magnetorheological (MR) dynamic tuned mass damper (TMD) is firstly designed and utilized into suspension. A semi-active co-control algorithm with MR TMD designed, analyzed validated by comparative experiments. The models two devices have been tested fitted. Comparing simulation experimental results under various excitations...
Abstract This paper proposes a novel passive-tuned magnetorheological (PTMR) damper based on developed (MR) porous fabric composite, in which the damping force is tuned by permanent magnet (PM). Firstly, influences of fiber structure composite suspended phase are considered, and continuous constitutive model dipole proposed for first time, can accurately predict its rheological properties. Subsequently, stable passive special conditions designed, unique design concept to achieve completely...
In this paper, magnetorheological (MR) porous fabric composites were prepared by using non-woven fabrics pretreated with lithium stearate. Due to the structure of and good stability stearate, mechanical properties sedimentation composite have been improved. The viscosity, shear stress dynamic viscoelasticity different samples analyzed rheological tests. results indicate that containing stearate are improved compared MRF (magnetorheological fluid) sample, its under non-working conditions is...