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one-dimensional heat conduction partial differential equations was acquired by using Green’s function, and the explicit expression of pavement temperature field under specific constraint conditions... the natural environment and pavement surface was established. Based on this system, the partial differential equations of the one-dimensional heat conduction in the pavement were established on the basis......
Simulation on function mechanism of T1(Al2CuLi) precipitate in localized corrosion of Al-Cu-Li alloys LI Jin-feng(李劲风), ZHENG Zi-qiao(郑子樵), REN Wen-da(任文达) , CHEN Wen-jing(陈文敬), ZHAO Xu-shan(赵旭山... of Al-Li alloys[1-4]. However, there still exist different viewpoints on the function mechanism of precipitates in localized corrosion of Al-Li alloys. As to the localized corrosion mechanism of the Al-Li......
. Then, the non-fixed multi-segment mapping penalty function and fixed penalty function methods were combined to deal with the constraints. Thereafter, an improved dynamic differential evolution algorithm... such class of bi-level programming problem compared with other algorithms. Key words: bi-level programming; KKT conditions; penalty function method; differential evolution algorithm 双层规划问题(BLPP)是一类具有主从递阶结构......
J. Cent. South Univ. Technol. (2010) 17: 1230-1237 DOI: 10.1007/s11771-010-0624-z Levitation mechanism modelling for maglev transportation system ZHOU Hai-bo(周海波), DUAN Ji-an(段吉安) School... nonlinear multi-input multi-output coupling system and has many inner nonlinear coupling characteristics, was deduced. For testifying the model, the levitation mechanism was firstly controlled......
; mechanical property; grain growth; deformation mechanism 纳米晶金属材料具有非常高的强度,但是其拉...常可用Gibss自由能G的变化量dG来表示: 图2 镍钴合金平均晶粒尺寸随钴含量的变化 Fig.2 Average grain size as function of Co content in Ni-Co alloys 式中:A为晶界面积,γ为晶界能.对于纯金属γ为正值,所以纳米晶粒具有自发长大,减小A以达到最低能量的倾向.对于二元合金,γ可表示为[14......
J. Cent. South Univ. (2016) 23: 189-200 DOI: 10.1007/s11771-016-3062-8 Theoretical generalization of Markov chain random field from potential function perspective HUANG Xiang(黄翔)1, WANG Zhi-zhong(王志... and should be checked whenever possible because it is mathematically difficult to prove. Rather than trap in this independence proving, an appropriate potential function in MRF theory is chosen instead......
be foamed. The function of grinding fly ash and mechanism of increasing viscosity is discussed. 2 Experimental Firstly the fly ash was washed, and filtrated to remove impurity such as carbon granule... Function of grinding fly ash in production of aluminum foam WANG Yong(王 永), YAO Guang-chun(姚广春), LI Bing(李 兵) School of Materials and Metallurgy, Northeastern University, Shenyang......
Density Function Theory Study on the Reaction Mechanism of Cerium with Oxygen for Cebearing Aerosol Particle Formation谢波1,WANG Qingqing2,龙兴贵1,HU Sheng1,GAO Tao21. Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics2. Institute of Atomic and Molecular Physics, Sichuan University摘 要:We obtained the reaction mechanism of cerium......
J. Cent. South Univ. (2020) 27: 2424-2439 DOI: https://doi.org/10.1007/s11771-020-4459-y A practical constitutive theory based on egg-shaped function in elasto-plastic modeling for soft clay JIANG... discussion is presented on the application of egg-shaped function in elasto-plastic constitutive analysis for soft clay. Two main tasks of the paper are: 1) to propose a complete yield criterion based on egg......
化剂,促进反应进行[23]. 表1 部分气固反应机理函数及相关系数 Table 1 Correlation coefficient of some mechanism function in gas-solid reaction 图6 不同样品的ln{[-ln(1-α)]4/T2}和1/T关系曲线 Fig. 6 Plots of ln{[-ln... in reduction of non-isothermal process and the best mechanism function(G(α)=[-ln(1-α)]4) for reduction process of Fe2O3-NiO system in hydrogen atmosphere were obtained. It is found that the reduction......