共搜索到4618条信息,每页显示10条信息,共462页。用时:0小时0分0秒323毫秒
J. Cent. South Univ. (2020) 27: 2367-2381 DOI: https://doi.org/10.1007/s11771-020-4455-2 A generalized cover renewal strategy for multiple crack propagation in two-dimensional numerical manifold... poses a challenge for multiple crack propagation problems and there are few references. In this study, a robust and efficient strategy is proposed to update the cover system of the numerical manifold......
Risk reduction in Sechahun iron ore deposit by geological boundary modification using multiple indicator KrigingS. Kasmaee1, F. M. Torab2(1. Department of Mining and Metallurgical Engineering... problem in reserve estimation of this ore body is its geometrical modeling and uncertainty in geological boundaries. This work deals with the geostatistical method of multiple indicator kriging, which......
......
J. Cent. South Univ. (2012) 19: 424-432 DOI: 10.1007/s11771-012-1021-6 Multiple linear system techniques for 3D finite element method modeling of direct current resistivity LI Chang-wei(李长伟)1, 2... of Technology, Guilin 541004, China ? Central South University Press and Springer-Verlag Berlin Heidelberg 2012 Abstract: The strategies that minimize the overall solution time of multiple linear systems in 3D......
Optimization of TC11 alloy forging parameters using processing mapsLI Miaoquan and ZHANG Xiaoyuan School of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an 710072... and the processing maps of TC11 alloy at different strains were drawn by using the dynamic material model (DMM). Based on the processing maps, the proper forging parameters, including a combination of defor......
Design of relief-cavity in closed-precision forging of gearsZUO Bin(左斌), WANG Bao-yu(王宝雨), LI Zhi(李智), ZHENG Ming-nan(郑明男), ZHU Xiao-xing(朱小星) (School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China)Abstract:To reduce the difficulty of material filling into the top region of tooth in hot precision forging of gears using the alternative die designs......
J. Cent. South Univ. Technol. (2009) 16: 0546-0551 DOI: 10.1007/s11771-009-0091-6 Die design for cold precision forging of bevel gear based on finite element method Jin Jun-song(金俊松)1, Xia... of the die structure increases the life of the die from 100 to 6 000 hits. Key words: die; gear; precision forging; finite element analysis; optimized design  ......
Semisolid forging electronic packaging shell with silicon carbon-reinforced copper compositesKai-Kun WangSchool of Materials Science and Engineering,University of Science and Technology Beijing摘 要... was introduced for billets preparation. The SiC/Cu composites were first prepared by PM, and then, semisolid reheating was performed for the successive semisolid forging. Composite billets with SiC 35% volume......
Controlling Flow Instability in Straight Spur Gear Forging Using Numerical Simulation and Response Surface MethodZhao-Yang Jin1,Nan-Nan Li1,Kai Yan1,Jing-Xin Chen1,Dong-Lai Wei2,Zhen-Shan Cui31... straight spur gear forging. The processing map of AZ31 B alloys was calculated from flow stress curves and then integrated with the finite element model to simulate the distribution of flow instability......
Rate decline analysis of multiple fractured horizontal well in shale reservoir with triple continuumWANG Jun-lei(王军磊)1, YAN Cun-zhang(闫存章)2, JIA Ai-lin(贾爱林)1, HE Dong-bo(何东博)1, WEI Yun-sheng(位云生)1, QI Ya-dong(齐亚东)1(1. PetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, China;2. PetroChina Foreign Cooperative Company, Beijing 100011, China)Abstract:Multiple......