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, 2006, 16(2): 241?246.GE Yi-cheng, YI Mao-zhong. Influence of load, time, speed on sliding tribology behavior of C/C composites[J]. Chinese Journal of Nonferrous Metals, 2006, 16(2): 241?246. [4...) or precursor- pyrolysis(PIP), respectively. The sliding tribological behaviors of these four composites and one C/C composite were tested by M2000 wear tester. The results show that the coefficients......
Air flow patterns and noise analysis inside high speed angular contact ball bearingsZHAI Qiang(翟强), YAN Ke(闫柯), ZHANG You-yun(张优云), ZHU Yong-sheng(朱永生), WANG Ya-tai(王亚泰) (Key Laboratory for Modern... phase velocity, pressure and cage heat transfer efficiency increase as the revolving speed increases. The operating noise is largely due to the impact of the high speed external flow on the bearing......
J. Cent. South Univ. (2016) 23: 2063-2074 DOI: 10.1007/s11771-016-3262-2 Sliding mode control of solid state transformer using a three-level hysteresis function LIU Bao-long(刘宝龙)1, ZHA Ya-bing(査亚兵)1... as an energy router in energy internet. This work presents sliding mode control (SMC) to improve dynamic state and steady state performance of a three-stage (rectifier stage, isolated stage and inverter stage......
J. Cent. South Univ. Technol. (2009) 16: 0690-0696 DOI: 10.1007/s11771-009-0114-3 Short-term forecasting optimization algorithms for wind speed along Qinghai-Tibet railway based on different...; Abstract: To protect trains against strong cross-wind along Qinghai-Tibet railway, a strong wind speed......
Cavitation and grain boundary sliding during creep of Mg-Y-Nd-Zn-Mn alloy V. JAN?K1, F. HNILICA1, P. ZUNA1, V. O?EN??EK2, I. STUL?KOV?3 1. Department of Materials Engineering, Faculty... set of creep tests was interrupted after the onset of ternary creep. Fraction of cavitated dendritic boundaries was evaluated using optical microscopy. Measurement of grain boundary sliding......
J. Cent. South Univ. (2012) 19: 2061-2066 DOI: 10.1007/s11771-012-1245-5 Lateral aerodynamic performance and speed limits of double-deck container vehicles with different structures LI Yan-fei(李燕飞..., Fluent was employed to do numerical simulation for lateral aerodynamic performance of 6-axis X2K double-deck container trains with two different loading forms, and speed limits of the freight trains were......
(2019)10-2403-14 Analysis of dynamic characteristics of a variable speed helicopter transmission system BAO Heyun1, LI Fengbo1, LU Fengxia1, JIN Guanghu1, ZHU Rupeng1, ZOU Xiaozhu2 (1. Laboratory... of Aeronautics and Astronautics, Nanjing 210016, China) Abstract: With reference to the foreign two-stage variable speed transmission configuration, a two-stage variable speed helicopter transmission......
Effects of honing treatment on AIP-TiN and TiAlN coated end-mill for high speed machining Jae-Young HEO1, Sung-Hak CHO2, Tae-Jin JE2, Kwang-Ho KIM1, Hyung-Woo LEE1, Myung-Chang KANG1 1. National... and coated tools were conducted under high speed machining (HSM) of AISI D2 cold-worked die steel (62 HRC). Consequently, the TiAlN coated end-mill using honing treatment showed excellent tool life under......
speed LIM Sang-Heon1, KIM Jae-Hyun1, LEE Choon-Man2 1. Agency of Promoting Technology Innovation, Gyeongnam Technopark, Changwon 641-465, Korea; 2. School of Mechatronics, Changwon National.... The purpose of this study is the development of a CAD/CAM system and profile measuring device for a CNC grinding machine to obtain an optimal grinding speed with a constant surface roughness. Three types......
for the monolithic AZ91D Mg alloy and its nanocomposites at a sliding speed of 380 r/min for 1 h of wear time. As can be seen from Fig. 8, the friction force, wear loss and friction coefficient of the AZ91D Mg... surfaces of AZ91D and its nanocomposites subjected to wear for 1 h at a high applied load of 800 N with a sliding speed of 380 r/min. It can be found from Fig. 10(a) that there are wide and deep......