A5102795693- Geotechnical Engineering and Underground Structures
- Geotechnical Engineering and Soil Mechanics
- Geotechnical Engineering and Soil Stabilization
- Landslides and related hazards
- Dam Engineering and Safety
- Vibration Control and Rheological Fluids
- Fractional Differential Equations Solutions
- Advanced Control Systems Design
- Soil and Unsaturated Flow
- Grouting, Rheology, and Soil Mechanics
- Iterative Learning Control Systems
- Rock Mechanics and Modeling
- Adaptive Control of Nonlinear Systems
- Geomechanics and Mining Engineering
- Fluid Dynamics Simulations and Interactions
- Numerical methods in engineering
- Astronomical Observations and Instrumentation
- Seismic Waves and Analysis
- Inertial Sensor and Navigation
- Advanced Fiber Optic Sensors
- Geotechnical Engineering and Analysis
- Control Systems in Engineering
- Brake Systems and Friction Analysis
- Advanced Measurement and Metrology Techniques
- Flow Measurement and Analysis
Dalian University of Technology
2013-2024
Nanshan Group (China)
2017
The behaviours of gravelly soils under monotonic, cyclic and creep loading are generally simulated in separated processes with different models, which cannot describe the interactions between instantaneous elastic–plastic time-dependent complex loading. To address problem, an elastic–plastic–creep model framework for is described to present its basic components differences from framework. Within this framework, a unified constitutive behaviour proposed based on widely used generalized...
Previous investigations of membrane penetration mainly focused on uniform sandy soils, and few studied gravelly soils. A common problem in most previous was that unverified assumptions were made to evaluate or mitigate the a cylindrical specimen triaxial test. In this study, simple measurement soils proposed, based small-amplitude cyclic confining pressure Δσ3 loading, which amplitude ΔVm is recoverable, soil skeleton volume deformation ΔVk gradually decreases with increasing number cycles...
Fractional calculus is viewed as a novel and powerful tool to describe the stress strain relations in viscoelastic materials. Consequently, motions of engineering structures incorporated with dampers can be described by fractional-order differential equations. To deal fractional equations, initialization for derivatives integrals considered fundamental unavoidable problem. However, this issue has been an open problem long time controversy persists. The function approach infinite state are...
The inclinometer is a vital tool for monitoring internal displacement in slopes. However, existing fiber-optic inclinometers lack the ability to monitor three-dimensional deformation. To overcome this limitation, study introduces novel distributed based on Optical Frequency Domain Reflectometer (OFDR) technology. uses Frenet-Serret equations achieve calculation. validate proposed method and feasibility of OFDR inclinometer, finite element analysis experimental testing are conducted. A...
This paper proposes sliding mode control of vibration in three types single-degree-of-freedom (SDOF) fractional oscillators: the Kelvin–Voigt type, modified and Duffing type. The dynamical behaviors are all described by second-order differential equations involving derivatives. By introducing state variables physical significance, motion transformed into noncommensurate fractional-order equations. Fractional surfaces constructed stability dynamics is proved means diffusive representation...
The instantaneous loading and time-dependent creep deformations occur simultaneously during the lifetime of rockfill dams, but their proportions in monitoring records are still unclear. In previous works, were generally simulated independently turn. This uncoupled method may induce misleading conclusions interpreting dam behaviors. this paper, an advanced elastic-plastic-creep model is applied to capture interaction under complex conditions with varying rates based on a benchmark example...
This paper presents an adaptive fuzzy iterative learning control method for the output tracking problem of robotic systems with unknown time delay and input dead-zone. A state observer is designed to estimate unmeasurable velocity variables. By introducing boundary layer function, identical initial condition most schemes relaxed. combining appropriate Lyapunov-Krasovskii functional logic approximation technique, proposed scheme can guarantee that converges desired reference trajectory within...