A5016119637- Vibration Control and Rheological Fluids
- Seismic Performance and Analysis
- Structural Engineering and Vibration Analysis
- Structural Health Monitoring Techniques
- Hydraulic and Pneumatic Systems
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Advanced Sensor and Control Systems
- Elasticity and Material Modeling
- Rheology and Fluid Dynamics Studies
- Polymer Nanocomposites and Properties
- Elevator Systems and Control
- Dielectric materials and actuators
- Composite Material Mechanics
- Fire effects on ecosystems
- Robotics and Sensor-Based Localization
- Ultrasonics and Acoustic Wave Propagation
- Numerical methods in engineering
- Advanced Vision and Imaging
- Polymer crystallization and properties
- High-Temperature Coating Behaviors
- Fluid Dynamics and Vibration Analysis
- Quantum Dots Synthesis And Properties
- Metal and Thin Film Mechanics
- Video Surveillance and Tracking Methods
Nanjing Forestry University
2016-2025
Emory University
2024
Changzhou University
2011-2024
Chongqing University
2024
Anhui Agricultural University
2024
Harbin University of Science and Technology
2023
Shanghai Jiao Tong University
2009-2023
Jilin Electric Power Research Institute (China)
2023
International Peace Maternity & Child Health Hospital
2023
Shanghai Children's Medical Center
2022
Abstract Viscoelastic materials are commonly utilized in seismic vibration suppression of building structures. Supramolecular modification can extend the effective damping temperature range and improve performance viscoelastic materials. In present work, mechanical behaviors nitrile rubber material investigated by dynamic thermomechanical analyzer (DMA) with different strain amplitudes, excitation frequencies environmental temperatures. The supramolecular interaction molecular structures...
A conventional plate-type viscoelastic damper (VED) can easily crack at the interfaces of steel plates and components. In present work, grooved VEDs, which are a new type interfacial enhanced VEDs with grooves, designed to improve damping capacity anti-cracking ability dampers. The dynamic property experiments normal carried out cracking failure simulated analyzed by using bilayer cohesive constitutive model ABAQUS. VED exhibits excellent performance energy dissipation different...
Semi-active control of buildings and structures with magnetorheological (MR) dampers for earthquake hazard mitigation represents a relatively new research area. In this paper, the Bingham model MR damper is introduced, formula relating yielding shear stress current put forward that matches experimental data. Then an on-line real-time method semi-active proposed. This considers time-delay problem control, which can solve distortion responses structures. Finally, through numerical example...
Micro structures of viscoelastic materials (VEM) play an important role in their mechanical properties and energy dissipation capacities. This work shows a mathematical modeling VEMs considering molecular chain-network configurations, the temperature effects on can also be characterized based equivalent relationship between frequency. The Dynamic Thermomechanical Analyzer (DMA) test is carried out to observe dynamic behaviors VEM prove accuracy proposed new model. experimental data damper...
Both experimental and modeling studies of magnetic field induced viscoelastic properties magnetorheological (MR) elastomers under different loading cases are discussed. Anisotropic MR elastomer (MRE) samples with concentrations carbonyl iron powder, natural rubber additives fabricated four MRE vibration mitigation devices manufactured to investigate the dynamic MREs varying fields, displacement amplitudes frequencies in shear mode. The characteristics obtained terms experimentally determined...
Magnetorheological elastomers (MRE) have been synthesized on the basis of a silicon compound and mixture carbonyl iron particles sizes 3–5 40–80 μm. Their viscoelastic properties studied by dynamic shear oscillations various amplitudes stress controlled rheometer. The magnetic response obtained materials has examined in field applied perpendicular to plane. It shown that under both storage G ′ loss ″ moduli became strain‐dependent. values decrease with strain, while their ratio (the factor),...
Abstract Magnetorheological (MR) damper is a semi-active control device designed by utilizing the instantaneous fluid-solid conversion characteristics of MR fluid, thus microstructure fluid fundamentally determines mechanical properties dampers. In order to study influence on macroscopic dampers, micro-macro mathematical model for dampers was proposed describe dynamic affected fluid. Firstly, micromodel brought into classic quasi-static and double-Sigmoid propose model, which considers...
Magnetorheological (MR) damper is one of the most promising smart devices for dissipating seismic energy and reducing structural vibrations. The MR dampers with multiple coils are widely adopted to enhance output damping forces performance. In order study dynamic characteristics multicoil from a micro macro viewpoint, three-coil was designed manufactured in this paper. performance tests under different excitation currents, displacement amplitudes, frequencies, coil combinations were...
Abstract Nitrile‐butadiene rubber (NBR) has been wildly applied in vibration control technology, it is usually mixed with organic small molecular modifiers and well vulcanized, which can greatly enhance the mechanical damping properties of material. This work aims to design optimum blending ratio hindered phenol A/B/NBR composite best property by means dynamics (MD) simulation, investigate performance from level. The shear deformation simulation conducted on pure NBR models study impact...
Viscoelastic dampers are conventional passive vibration control devices with excellent energy dissipation performance. The fractional derivative has a simple form and high accuracy in the modelling of viscoelastic materials/dampers. internal variables reflect state evolution materials, often used to analyze deformation thermal process materials. In present work, mechanical properties plate-shear-type damper at room temperature tested under sinusoidal displacement excitations. impacts...
Guided wave ultrasonic testing (GWUT) within the realm of pipeline inspection is an efficacious approach; however, current GWUT systems are characterized by high costs and power consumption, their detection results significantly susceptible to noise interference. Addressing these issues, this study introduces a system predicated on adaptive wavelet threshold denoising, centered around low-power main controller, achieving cost-effective low-power-consumption non-destructive (NDT) with clear...
In this paper the physical and dynamic mechanical property tests of magnetorheological elastomers (MREs) are reported. Two kinds MREs with different matrices, about 12 samples in total, fabricated by mixing carbonyl iron powder additives, cured using a constant magnetic field. The viscoelastic properties these MRE specimens evaluated respect to fields, displacement amplitudes, frequencies. experimental results demonstrate that have variable stiffness loss factor bromobutyl rubber is high,...
Abstract Background Stress urinary incontinence (SUI) is a common public health issue that negatively impacts the quality of life for women worldwide, which early detection and rehabilitation are consequently pivotal. The aim this study to establish simple nomogram identifying at risk postpartum SUI. Methods A retrospective was conducted in tertiary specialized hospital Shanghai, China. included only with singleton, full-term, vaginal deliveries. 2,441 who delivered from July 2019 November...