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, transmission coefficient of the high-frequency region decreases, and the transmission spectrum moves to the lower frequency region. Meanwhile, with the increase of the ratio of atomic mass, the thermal...; 文章编号:1672-7207(2011)08-2351-05 Influence of ratio of atomic mass on heat conduction in one-dimensional Fibonacci chain XU Hui, CUI Mai-ling, MA Song-shan (School......
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现高值. 将杆塔振动顺线向和横线向加速度幅值分别作为复数的实部和虚部,对该复数列求取功率谱,得到合成加速度的功率谱和频域幅值减振率如图6(b)和图7(b)所示. 图7 无阻尼器和加阻尼器的两输电塔的频域减振率 Fig.7 Damping ratio of wind-induced vibration at two transmission towers without...)09-3911-07 Effect of wind-induced vibration’s control for high-voltage transmission tower based on prototype measurement WANG Wei1, ZHAO Dongyang2, ZHONG Wanli1, XU Jun2, LING Jie2, XIAO Xiaohui2 (1......
J. Cent. South Univ. (2017) 24: 2605-2612 DOI: https://doi.org/10.1007/s11771-017-3674-7 Transmission loss simulation based on rectangular-pulse method and experimental evaluation of acoustic.... The rectangular-pulse method based on the computational fluid dynamics approach was employed for calculating the transmission loss. Firstly, the transmission loss of the single-cavity element was simulated......
Microstructure and mechanical properties of AZ31 Mg alloy processed by high ratio extrusion CHEN Yong-jun(陈勇军), WANG Qu-dong(王渠东), LIN Jin-bao(林金宝), ZHANG Lu-jun(张陆军), ZHAI Chun-quan(翟春泉... September 2006 Abstract: The microstructure and mechanical properties of AZ31 Mg alloy processed by high ratio extrusion (HRE) were investigated. General extrusion with extrusion ratio of 7 and high......
J. Cent. South Univ. Technol. (2008) 15: 786-790 DOI: 10.1007/s11771-008-0145-1 Effects of temperature and initial molar ratio of Na2O to Al2O3 on agglomeration of fine Al(OH)3 seed in synthetic... particle size analyzer and scanning electron microscopy, the influences of temperature and initial molar ratio of Na2O to Al2O3 (αK) on agglomeration of fine seed in Bayer process were investigated......
of loaded transmission error of drive gears. Finally, a numerical simulation of example was performed. The characteristics of amplitude of LTE curves were investigated by analyzing the contact ratio... distortion of profile due to variable center distance hobbing without compensation of profile. Key words: gear-hobbing; topological modification; TCA; LTCA; loaded transmission error 滚齿加工是一种高效,经济的圆柱齿轮加方法,广泛应用于......
J. Cent. South Univ. (2017) 24: 203-216 DOI: 10.1007/s11771-017-3421-0 Vertical-to-horizontal response spectral ratio for offshore ground motions: Analysis and simplified design equation CHEN Bao... in vertical component between onshore and offshore motions, the vertical-to-horizontal peak ground acceleration ratio (V/H PGA ratio) and vertical-to-horizontal response spectral ratio (V/H) were......
; 文章编号:1672-7207(2016)10-3375-06 Dynamic characteristic analysis optimization of transmission mechanism with clearance based on Taguchi method MENG Fangang1, WU Shijing1... coefficient can affect the dynamic characteristics of transmission mechanism. In addition, clearance value is the most significant factor. Research methods and results of analysis can act......
