http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Control and Research on Blade Vibration of Wind Turbine
Shu Liu,Minghao Zhang,Zisong Xiao,Zhiyou Ren 보안공학연구지원센터 2015 International Journal of Smart Home Vol.9 No.7
This article takes control of fan blade vibration as the main body, introduces a new type of intelligent materials -- Electro rheological fluids, focusing on explain the smechanical and electrical properties of electro rheological fluid explain. The application of electro rheological technology to practical use in the performance of electro rheological fluids, control the occurrence of electro rheological effect, so as to achieve active vibration control effect on leaf and model simulation and eventually realize the effect of blade vibration weakened.
Haoran Sun,Zhigui Ren,Junli Wang,Weifeng Wei,Yongyong Liang,Minghao Feng 대한기계학회 2021 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.35 No.6
The bucket shape of a hydraulic excavator influences its excavating performance and is determined by its shape line. In this study, the inner surface line projected on the symmetrical plane of the bucket was adopted as the bucket shape line, and the value ranges of the main parameters for the shape line were investigated. By considering the centre of the arc at the bucket bottom as the origin, the Cartesian coordinate system was established, and the integrated equation of the bucket line was derived based on the geometric constraints related to the shape line. A general optimisation model of the bucket line was established using the integrated equation. The effects of four design variables on the optimisation goal were determined using the bucket of a 21 T excavator as an example, and the optimal shape line of the bucket was obtained using a genetic algorithm. The results indicated that the cutting angle decreased by 9.92 % in comparison with that before optimisation, which was beneficial in decreasing the digging resistance. Additionally, the aspect ratio decreased by 5.75 %, thereby reducing the bucket weight. Thus, the integrated expression and the optimisation of shape lines provide a general method and theoretical basis for optimising the bucket shape.
Long-Lu,류성기,Guangguang Feng,Minghao Ren,Huixia Zhang 한국정밀공학회 2013 International Journal of Precision Engineering and Vol. No.
The compound technology of ion nitriding and multi-arc ion plating is adopted to make Ti1-xAlxN film on 40 Cr. The influence of Al content to the structure and functions of film is analyzed through SEM (Scanning Electron Telescope), XRD analyzer,micro hardness tester and scratch tester. It indicated that the Al content has obvious influence on the structure and function of film. The more Al content, the more droplets in the film. Phase structure tends to multiphase composite structures. The micro hardness and bonding force will be increased first, and then decreased with the rising Al content.