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Fracture behaviors of AZ80 magnesium alloy during multiple forging processes GUO Qiang(郭 强), YAN Hong-ge(严红革), CHEN Zhen-hua(陈振华), ZHANG Hui(张 辉) School of Materials Science and Engineering... magnesium alloy during multiple forging processes were investigated. The results show that the cracks firstly initiate at the Mg/Mg17Al12 interface under the hoop tensile stress on equatorial free surface......
Optimization of press bend forming path of aircraft integral panel YAN Yu(阎 昱), WAN Min(万 敏), WANG Hai-bo(王海波), HUANG Lin(黄 霖) School of Mechanical Engineering and Automation, Beihang...; Abstract: In order to design the press bend forming path of aircraft integral panels, a novel optimization method was proposed, which......
as a Volterra integral equation of the first kind. The final calibration integral equation includes multiple partial integrations involving dummy variables but can be written in terms of compact form... ARTICLE J. Cent. South Univ. (2019) 26: 2100-2108 DOI: https://doi.org/10.1007/s11771-019-4157-9 Resolving double-sided inverse heat conduction problem using calibration integral equation method......
Defect analysis of complex-shape aluminum alloy forging SHAN De-bin(单德彬), ZHANG Yan-qiu(张艳秋), WANG Yong(王 勇), XU Fu-chang(徐福昌), XU Wen-chen(徐文臣), L? Yan(吕 炎) School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China Received 28 July 2006; accepted 15 September 2006 Abstract: The isothermal precision forging was applied for the purpose of forming......
integral and the other is associated with the subsurface boundary integral. The equivalent multiple linear systems with closer right-hand sides than the original systems were constructed. A recycling... with the boundary integral. Therefore, the coefficient matrices do not differ very much. Fig. 1 Flow chart of solving process for multiple linear systems 2) The coefficient matrices are separated into two parts......
temperatures and strain rates: 1-5 s-1; 2-0.5 s-1; 3-0.05 s-1; 4-0.005 s-1 3 Physical modeling of impeller forging It is a difficult job to precisely forge an integral titanium alloy impeller with many... Isothermal precision forging of Ti-6.5Al-3.5Mo-1.5Zr-0.3Si alloy impeller with twisted blades SHAN De-bin(单德彬), SHI Ke(史 科), XU Wen-chen(徐文臣), L? Yan(吕 炎) School of Materials Science......
J. Cent. South Univ. (2016) 23: 1486-1507 DOI: 10.1007/s11771-016-3201-2 Equivalent elastic compliance tensor for rock mass with multiple persistent joint sets: Exact derivation via modified crack... Mechanics, Chinese Academy of Sciences, Wuhan 430071, China Central South University Press and Springer-Verlag Berlin Heidelberg 2016 Abstract: Discontinuities constitute an integral part of rock mass......
J. Cent. South Univ. (2020) 27: 780-796 DOI: https://doi.org/10.1007/s11771-020-4331-0 Pressure transient analysis of a finite-conductivity multiple fractured horizontal well in linear composite... of producing wells in LC reservoirs based on the linear composite ideas, almost all of them focus on vertical wells and studies on multiple fractured horizontal wells are rare. After the pressure wave arrives......
J. Cent. South Univ. (2017) 24: 382-393 DOI: 10.1007/s11171-017-3440-5 Leader-following coordination of multiple UUVs formation under two independent topologies and time-varying delays YAN Zhe-ping... the coordinate control problems of multiple unmanned underwater vehicles (multi-UUVs) formation in the case of leader-following is adapted. As the communication between the UUVs is difficult......
and manufacture. Female die should not be integral for the sake of the ears and the bottom flange, otherwise the forging cannot be removed from the dies after forging. Hence the female die is divided... Precision forging technologies for magnesium alloy bracket and wheel WANG Qiang(王 强)1, ZHANG Zhi-min(张治民)1, ZHANG Xing(张 星)1, YU Jian-min(于建民)2 1. College of Materials Science and Engineering......
