Journal of Central South University
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Automatically detecting auditory P300 in several trials
Journal of Central South University - Tập 22 - Trang 2201-2206 - 2015
A method was demonstrated based on Infomax independent component analysis (Infomax ICA) for automatically extracting auditory P300 signals within several trials. A signaling equilibrium algorithm was proposed to enhance the effectiveness of the Infomax ICA decomposition. After the mixed signal was decomposed by Infomax ICA, the independent component (IC) used in auditory P300 reconstruction was au......
A new method determining safe thickness of karst cave roof under pile tip
Journal of Central South University - - 2014
Cave roofs are used to support pile foundation in many engineering projects. Accurate stability analysis method of cave roof under pile tip is important in order to ensure the safety of the pile foundation structure. Firstly the mechanical model to analysis the stability of cave roof under pile tip is founded aiming to solve the problems that the simplified mechanical model has. Secondly, the boun......
Prediction model of residual stress field in aluminum alloy plate
Journal of Central South University - Tập 18 - Trang 285-289 - 2011
Residual stress distributions in 7075 aluminum alloy thick plates with different thicknesses and different quenching speeds were measured. A shape function of stress distribution was proposed based on the internal stress distribution characteristics of aluminum alloy. Using nonlinear regression technology, the function between stress value of key points on internal stress curve and surface stress ......
Numerical and experimental investigations of weld pool geometry in GTA welding of pure aluminum
Journal of Central South University - Tập 21 - Trang 20-26 - 2014
A 2-D numerical model was developed to predict the shape of weld pool in stationary GTA welding of commercial pure aluminium, without considering fluid flow in the weld pool. A Gaussian current density and heat input distribution on the surface of the workpiece were considered. The parameters of Gaussian distribution were modified by comparing calculated results with experimental ones. It was foun......
A new single degree-of-freedom resonance device
Journal of Central South University - Tập 19 - Trang 2782-2787 - 2012
A new single degree-of-freedom (1 DOF) resonance device was developed. It mainly comprises a linear motor, a vibrating screen, a supporting spring set, a supporting frame and a damper set. Forces acting on the vibrating screen were found. A differential equation for describing the forces was set up. Equations that were used to evaluate the exciting force and exciting frequency in resonance were de......
Effect of obstruction on thermal performance of solar water heaters
Journal of Central South University - - 2020
Solar water heaters (SWH) are widely used in urban areas because of their advantages in reducing energy consumption and mitigating greenhouse gas emissions. However, the performance of SWH subjected to obstructions is unclear yet. In this study, we present a numerical evaluation on thermal performance of façade-installed SWH under three typical obstructed scenarios, based on various levels of suns......
Numerical simulation of triaxial compression test for brittle rock sample using a modified constitutive law considering degradation and dilation behavior
Journal of Central South University - - 2015
Pretreatment of poly (acrylic acid) sodium by continuous diafiltration and time revolution of filtration potential
Journal of Central South University - - 2019
Spring constitutive model of rigid pile composite foundation and application in design of raft foundation
Journal of Central South University - Tập 20 - Trang 1079-1084 - 2013
The simplified analysis method based on the static equilibrium is generally adopted for raft design. The secondary stress of superstructure due to the differential settlement of the foundation is neglected, which leads to larger support moments and longitudinal bending of raft compared with real values. The spring constitutive relation of composite foundation is obtained by the flat plate loading ......
Effect of geogrid reinforcement on soft and medium dense soils
Journal of Central South University - Tập 18 - Trang 1638-1645 - 2011
The field tests were carried out to examine the reinforcement effect of a geogrid on various conditions of embankment height, the number of passages of vibratory roller, the number of reinforced layer of geogrid, and soil properties. The test results of the dynamic earth pressure indicate that the soil reinforced by geogrid is very effective to increase the stiffness of soil, especially in soft so......
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