Journal of Central South University
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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 ......
Integral sliding mode control for flexible ball screw drives with matched and mismatched uncertainties and disturbances
Journal of Central South University - Tập 24 - Trang 1992-2000 - 2017
The design of servo controllers for flexible ball screw drives with matched and mismatched disturbances and uncertainties is focused to improve the tracking performance and bandwidth of ball screw drives. A two degrees of freedom mass model is established based on the axial vibration characteristics of the transport ball screw, and the controller of an adaptive integral sliding mode is proposed co......
Phase type delay distribution with PU return and sensing error in CR networks
Journal of Central South University - - 2017
Extraction process of metals and removal of impurities from sulfide ores with aluminum permanganate [Al(MnO4)3] oxidizer: Experimental design and industrial modeling
Journal of Central South University - Tập 30 - Trang 2149-2165 - 2023
Nowadays, sulfide ores are a huge source of precious metals. One of the main problems for working with sulfide ores is their low solubility in acids (Ksp<10−20) and the production of toxic and harmful by-products. In the present study, the use of aluminum permanganate [Al(MnO4)3] oxidizer for sulfide ore dissolution and metal extraction has partially solved this problem. Taguchi experimental desig......
Analysis and optimization of heat loss for water-cooled furnace roller
Journal of Central South University - Tập 20 - Trang 2158-2164 - 2013
A heat transfer model of furnace roller cooling process was established based on analysis of furnace roller’s structure. The complicated model was solved with iteration planning algorithm based on Newton search. The model is proved logical and credible by comparing calculated results and measured data. Then, the relationship between water flow velocity, inlet water temperature, furnace temperature......
Effects of microstructural heterogeneity on fatigue properties of cast aluminum alloys
Journal of Central South University - - 2020
Flocking behavior with multiple leaders and global trajectory
Journal of Central South University - Tập 21 - Trang 2324-2333 - 2014
Aiming at the group of autonomous agents consisting of multiple leader agents and multiple follower ones, a flocking behavior method with multiple leaders and a global trajectory was proposed. In this flocking method, the group leaders can attain the information of the global trajectory, while each follower can communicate with its neighbors and corresponding leader but does not have global knowle......
Nonlinear model predictive control based on hyper chaotic diagonal recurrent neural network
Journal of Central South University - Tập 29 - Trang 197-208 - 2022
Nonlinear model predictive controllers (NMPC) can predict the future behavior of the under-controlled system using a nonlinear predictive model. Here, an array of hyper chaotic diagonal recurrent neural network (HCDRNN) was proposed for modeling and predicting the behavior of the under-controller nonlinear system in a moving forward window. In order to improve the convergence of the parameters of ......
Comparative study on microstructure and electrochemical corrosion resistance of Al7075 alloy prepared by laser additive manufacturing and forging technology
Journal of Central South University - - 2021
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