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RISS 인기검색어
- 검색키워드
- 저자 : Kaibin Wang (검색결과 4 건)
- 무료
- 기관 내 무료
- 유료
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Aerodynamic Optimization of Squirrel-Cage Fan with Dual Inlet
Ruizi Zhang,Kaibin Wang,Yunlong Li,Jingyin Li 한국유체기계학회 2018 International journal of fluid machinery and syste Vol.11 No.3
In this paper, the rotor and the volute of the squirrel-cage fan with dual inlet were optimized to improve its aerodynamic performance. The blade inlet angle, blade exit angle and diameter ratio of the impeller were chosen as optimization variables using the response surface methodology (RSM) to improve the total pressure. Furthermore, another three optimization variables were adopted on the basis of previous optimum results, which are the width of impeller, the location of the impeller annular plate and the location of cutoff respectively. The simulation and experimental results show that the total pressure of the optimal model has been greatly improved without noise increase in comparison with the original model.
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Effects of the Inlet Position of Blade on the Performance of a Centrifugal Impeller
Yunlong Li,Ruizi Zhang,Kaibin Wang,Jingyin Li 한국유체기계학회 2018 International journal of fluid machinery and syste Vol.11 No.3
The effects of the inlet position of blade on the performance of a centrifugal impeller are numerically investigated. The inlet position of the blade can be determined by the outer diameter, the leaning angle of the blade inlet, the shroud and hub angular momentums specified at the blade inlet. It is found that the flow fields of the optimal impeller are obviously superior to those of the impeller whose blade leading edge was installed at impeller eye. The range analyses reveal that angular momentum specified at the inlet hub is the least important factor in affecting the efficiency of impeller, while the outer diameter of blade leading edge plays the most important role in determining the pressure ratio.
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Yanlin Chen,Yanjiang Huang,Kaibin Chen,Yeping Wang,Yanbin Wu 대한기계학회 2022 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.36 No.6
Reasonable robot joint stiffness is necessary to guarantee the safety and control accuracy of cooperative robots. In this study, a novel flat torsional spring with corrugated flexible units for a series elastic actuator (SEA) was developed to meet the requirements of cooperative robots. The torsional spring can absorb impact energy. The spring was optimized through the design of experiment method, and its theoretical stiffness was verified through numerical calculation and finite element analysis. Compared with other existing flat torsional springs in the simulation, the proposed torsional spring showed reasonable torsional stiffness and high radial and axial stiffness, which could guarantee safety and control accuracy. The proposed torsional spring was also evaluated through real experiments. Simulation and experimental results revealed that the proposed torsional spring has a linear torque versus angle characteristic.
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최건오,Xiaowu Tang,Rixuan Wang,Kaibin Wu,정용진,안태규,김세현,Liwei Mi 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.116 No.-
Significant efforts have been devoted to developing dielectric elastomer actuators owing to their mechanicalflexibilities, silent operation, and muscle-like performances. However, it still remains a challenge todemonstrate the actuators that maintain function when subjected to damage because most soft materialsconstituting such devices are vulnerable to mechanical stresses during repeated operation. Here, selfhealableelectrodes suitable for dielectric elastomer actuators were prepared from an eco-friendlygelatin-based composite including conductive ions and hydrogen bonds. Electrohydrodynamic printingwas used to reproducibly fabricate a custom-made electrode with desired geometry. The printedgelatin-based electrodes were attached onto elastomers to fabricate dielectric elastomer actuators. Thedevices exhibited good actuator operation and, owing to the self-healing capability of the gelatinbasedelectrodes, almost fully recovered their performances with an efficiency of up to 96.8% even afterthe electrodes were damaged. Furthermore, the potential application of the gelatin-based electrode wasexplored by using them as a strain sensor; this sensor showed a sensitive dependence of electrical resistanceon external joint movements. We believe this work provides a useful guideline for designing selfhealableconductive composites that can be effectively used to make printed actuators and sensorsendowed with good ionic conductivity and useful mechanical properties.
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