A5024553218- Rock Mechanics and Modeling
- Geotechnical Engineering and Underground Structures
- Geotechnical Engineering and Analysis
- Grouting, Rheology, and Soil Mechanics
- Geotechnical Engineering and Soil Mechanics
- Landslides and related hazards
- Geomechanics and Mining Engineering
- Geotechnical and Geomechanical Engineering
- Geotechnical Engineering and Soil Stabilization
- Tunneling and Rock Mechanics
- Advanced Wireless Communication Techniques
- Error Correcting Code Techniques
- Geoscience and Mining Technology
- Advanced MIMO Systems Optimization
- Cooperative Communication and Network Coding
- Microstructure and Mechanical Properties of Steels
- Vibration and Dynamic Analysis
- Dam Engineering and Safety
- Structural Response to Dynamic Loads
- Advanced Algorithms and Applications
- Advanced Manufacturing and Logistics Optimization
- Coal Properties and Utilization
- Methane Hydrates and Related Phenomena
- Metal Alloys Wear and Properties
- Scheduling and Optimization Algorithms
Southeast University
2008-2024
China University of Mining and Technology
2020-2024
China Southern Power Grid (China)
2024
Purple Mountain Laboratories
2022-2024
Northwestern Polytechnical University
2024
China Electric Power Research Institute
2012-2023
North China Electric Power University
2012-2023
Qingdao Municipal Hospital
2022
Qingdao University
2022
Tongji University
2010-2021
This paper presents a numerical study on deep penetration mechanisms in granular materials with the focus effect of soil–penetrometer interface friction. A two-dimensional discrete element method has been used to carry out simulation tests ground that is under an amplified gravity K0 lateral stress boundary. The results show makes soil near penetrometer move complex displacement path, undergo evident loading and unloading process, rotation principal stresses as large 180°. In addition, leads...
A discrete element modelling of bonded granulates and investigation on the bond effect their behaviour are very important to geomechanics. This paper presents a two-dimensional (2-D) theory for with rolling resistance provides numerical into yielding granulates. The model consists mechanical contact models equations governing motion particles. key point is that assumption in original previously proposed by authors (55th CSCE-ASCE Conference, Hamilton, Ont., Canada, 2002; 313–320; J. Eng....
Abstract Time dependency in tunnel excavation is mainly due to the rheological properties of rock and sequential excavation. In this paper, analytical solutions for deeply buried tunnels with elliptical cross-section excavated linear viscoelastic media are derived accounting process For purpose, an extension principle correspondence solid time varying boundaries formulated first time. An initial anisotropic stress field assumed. To simulate realistically excavation, developed a...
Abstract The earth pressure coefficient at rest ( K 0 ) is an important parameter reflecting the relationship between horizontal and vertical stresses in stratum. In test, relative density of soil sample will vary during loading/unloading, value also change accordingly test. Besides, different stress paths may lead to laws Nevertheless, physical mechanism about these issues still unclear. To reveal above from micro macro, Discrete Element Method (DEM) used simulate tests sand with...
A power factor correction circuit for a single-phase arc welding source using digital soft switching technology is proposed. The overall hardware structure of the system, topology principle selected switch boost circuit, and software design approach are discussed. results verified under two conditions: electronic load TIG welding. By electrical signals resonating capacitor tube, it confirmed that successfully achieved zero current conduction voltage turn off. Through testing efficiency loads...
In this paper we present results of numerical simulations for the evaluation kinematic models non-coaxial granular materials by distinct element method (DEM). Strain-rate controlled monotonic and cyclic un-drained simple shear tests were specifically designed criteria established purpose. The examined are double-shearing model, double-sliding free-rotating double slip rotation rate model (DSR2 model) proposed authors (see accompanying paper). It is shown that assumption used in appears to...