A5037573033- Railway Engineering and Dynamics
- Structural Health Monitoring Techniques
- Structural Engineering and Vibration Analysis
- Vibration and Dynamic Analysis
- Ultrasonics and Acoustic Wave Propagation
- Geotechnical Engineering and Underground Structures
- Mechanical stress and fatigue analysis
- Infrastructure Maintenance and Monitoring
- Computational Fluid Dynamics and Aerodynamics
- Technology and Security Systems
- Smart Grid and Power Systems
- Dynamics and Control of Mechanical Systems
- Plasma and Flow Control in Aerodynamics
- Composite Structure Analysis and Optimization
- Combustion and Detonation Processes
- Power Systems and Technologies
China Southern Power Grid (China)
2024
Chongqing University
2020-2024
Two factors are critical to the effectiveness of vehicle scanning method for bridge frequencies. One is frequency test itself. This can be eliminated by using vehicle–bridge contact point response calculated from response. The other surface roughness bridge, which removed residual two connected vehicles. In this paper, it demonstrated first time that both vehicle’s and simultaneously residue Theoretically, a formulation presented residues. numerical study, outperform as more frequencies...
Continuous rails are often modeled as infinite beams. In this paper, closed-form solution is newly derived by the residue theorem and Green’s function for dynamic response of an beam resting on viscoelastic foundation under a harmonic moving load. The most suitable span length will be determined analogic finite (which can more conveniently used in practice) to best represent deflection practical reasons. Starting from equations motion, firstly beam. Then, it verified element method (FEM)...
Previously, classical boundary conditions (i.e. simple, fixed and cantilevered) have been adopted for the beams under moving loads in deriving dynamic response. In reality, most cannot be simply classified as ones with supports, but are elastically restrained. For theoretical completeness, a general theory will developed this note damped elastic restraints modeled by vertical rotational springs subjected to sprung mass. Essential present is solution of transcendental equation frequency...
Abstract Modern transportation aircraft typically cruise at transonic speeds. However, under a specific combination of incoming flow Mach numbers and angles attack, periodic self-excited oscillations shock waves can lead to unsteady aerodynamic loads, causing sustained vibrations in the aircraft, which is known as wave buffeting. Buffeting loads significantly impact fatigue life aircraft’s structural materials its handling performance. In severe cases, it causes damage or even leads flight...
This paper proposes a furthering approach for extracting the first several flexural and torsional-flexural frequencies of thin-walled box girders from residual contact response two-wheel test vehicle passing bridge.Unlike most previous studies, single-axle is modeled as two degree-of-freedom (DOF) system to account wheels' rocking motion, which relates motion beam.To start, new theory monosymmetric beam subjected moving presented.The wheel derived herein (which free frequencies) enables us...