A5102903173- Composite Structure Analysis and Optimization
- Vibration and Dynamic Analysis
- Railway Engineering and Dynamics
- Nonlocal and gradient elasticity in micro/nano structures
- Structural Analysis and Optimization
- Structural Load-Bearing Analysis
- Structural Engineering and Vibration Analysis
- Geotechnical Engineering and Underground Structures
- Civil and Geotechnical Engineering Research
- Numerical methods in engineering
- Stability and Controllability of Differential Equations
- Fluid Dynamics and Vibration Analysis
- Microstructure and mechanical properties
- Advanced Mathematical Physics Problems
- Energetic Materials and Combustion
- Non-Destructive Testing Techniques
- Tribology and Lubrication Engineering
- Adhesion, Friction, and Surface Interactions
- Grouting, Rheology, and Soil Mechanics
- Advancements in Battery Materials
- Magnesium Alloys: Properties and Applications
- Nonlinear Partial Differential Equations
- Railway Systems and Energy Efficiency
- Mechanical and Optical Resonators
- Spine and Intervertebral Disc Pathology
Jilin University
2023-2025
Southwest Jiaotong University
2010-2024
China Academy of Railway Sciences
2010-2024
Shanghai Tunnel Engineering Rail Transit Design & Research Institute
2024
University of Central Florida
2018
Tân Tạo University
2010-2011
Shanghai University
2007-2011
This paper investigates the vibration characteristics of multi-span beams resting on an elastic foundation and subjected to axial forces. A comprehensive analytical expression dynamic response that is developed address various boundary conditions. The equation derived by employing Newton's second law. By Laplace transformations Green's function method, solution this governing can be obtained. Subsequently, a unified description implemented for distinct types conditions using matrix...
Axially loaded micro/nano-beams supported on foundations are extensively applied in micro/nano-electro-mechanical systems. This paper deals with the problems of free vibration, buckling and dynamical stability Timoshenko micro/nano-beam Winkler–Pasternak foundation subjected to a follower axial periodic load. Based Hamilton’s principle, governing equations system derived conjunction nonlocal strain gradient theory. The transition parameter is introduced describe direction load during...
Purpose This paper aims to analyze the stress and strain distribution on track wheel web surface study optimal gauge location for force measurement system of wheel. Design/methodology/approach Finite element method was employed under varying wheel-rail forces. Locations with minimal coupling interference between vertical lateral forces were identified as suitable installation. Findings The results show that due web’s unique curved shape loading mechanism, both tensile compressive states exit...
Purpose In service, the periodic clashes of wheel flat against rail result in large wheel/rail impact force and high-frequency vibration, leading to severe damage on wheelset, track structure. This study aims analyze characteristics dynamic law caused by high-speed trains. Design/methodology/approach A full-scale interface test rig was used for train. With flats different lengths, widths depths manually set around rolling circle tread, tests speed range 0–400 km/h were conducted. Findings As...
Abstract The double-nanobeam system has important applications in nano-optomechanical systems (NOMS), its dynamic analysis is of importance to the effective design nanodevices. This paper aims present analytical solutions forced vibration a functionally graded (FGDNS) interconnected by viscoelastic layer supported on an elastic foundation subjected time-harmonic external forces. Employing Hamilton’s principle, governing differential equations FGDNS are derived context Euler–Bernoulli beam...
In this paper, a closed-form frequency equation of the pipe-in-pipe (PIP) structure with arbitrary boundaries is obtained. The derived from Green’s function transverse forced vibration PIP and takes into account effects internal two-phase flow axial pressure. reliability method in paper proved by comparison published literature. numerical discussion part, structures clamped-clamped, clamped-free, elastic boundary conditions are used as examples to discuss. equivalent stiffness coefficient,...
In order to reveal the rock breaking mechanism of rotary-percussive drilling, considering coupling effect static pressure, impact force and rotary cutting using finite element methods (FEM), a three-dimensional (3D) insert-rock mutual action model is established. We use Mohr-Coulomb type material describe when how fails, triangular wave replace stress wave. Using analysis software (ANSYS), 3D contact insert under percussion rotary-percussion carried out respectively. Considering inclined...
This paper presents a rapidly direct algorithm (RDA) to calculate explicit Fréchet derivatives (EFD) for marine controlled-source electromagnetic measurement (MCSEM) in three-dimensional (3-D) transversely isotropic (TI) formation. By discretizing the Helmholtz equations about coupled potentials on Yee's staggered grids by 3-D finite volume method (FVM), we obtain complex linear system unknown excited mass of moving electric current sources. To efficiently determine (EM) fields, introduce an...