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| 1 | Dynamic analysis of C/C composite finger seal显示文摘A seal device as an important component of aeroengines has decisive influence on performance, reliability, and working life of aeroengines. With the development of aeroengines,demands on the performance characteristics of seal devices are made strictly. Finger seal as a novel kind of sealing device, recently attracts more and more attentions in academic circles and engineering fields at home and abroad. Research on finger seals has been extensively developed, especially on leakage and wear performances under dynamic conditions. However, it is a pity that the work on finger seals has been limited with a single approach that is improving the performance by structural optimization; in addition, the technology of dynamic analysis on finger seals is weak. Aiming at the problems mentioned above, a distributed mass equivalent dynamic model of finger seals considering the coupling effect of overlaid laminates is established in the present paper, the dynamic performance of 2.5 dimension C/C composite finger seal is analyzed with the model, and then the effects of fiber bundle density and fiber bundle preparation direction on finger seal's dynamic performance are discussed, as well as compared with those of Co-based alloy finger seal. The current work is about dynamic analysis of finger seals and application of C/C composite in this paper may have much academic significance and many engineering values for improving research level of finger seal dynamics and exploring feasibility of C/C composite being used for finger seals. | Chen Guoding Wang Li’na Yu Qiangpeng Su Hua | 2014 | Chinese Journal of Aeronautics2014，27，3： | 8 |
| 2 | Dynamic analysis of finger seal using equivalent model based on distributed mass method 显示文摘 | CHEN Guoding LU Fei YU Qiangpeng | 2014 | Journal of Mechanical Engineering Science2014，288，16： | 1 |
| 3 | Dynamic analysis of finger seal using equivalent model based on distributed mass method显示文摘 | CHEN Guoding LU Fei YU Qiangpeng | 2014 | Journal of Mechanical Engineering Science2014，228，16： | 1 |
| 4 | Novel Fluorene-based Conjugated Copolymer Containing Cyclobutenedione Unit for Light Emitting Diodes显示文摘A novel fluorene-based conjugated copolymer containing cyclobutenedione unit was synthesized by Suzuki reaction.Its structure and properties were characterized by FTIR,^1HNMR,elemental analysis,PL spectroscopy,DSC,TGA and cyclic voltammetry.The resulting polymer shows strong yellow PL emission(561nm)and good solubility in polar aprotic solvents,i.e.THF,DMF,DMAC,DMSO,etc.DSC and TGA studies reveal that the novel polymer possesses excellent thermal stability with high glass transition temperature of 127℃ and onset decomposition temperature of 411℃.Cyclic voltammetry measurement demonstrated that the polymer has both hole and electron-transporting property. | QiangPENG YanHUANG ZhiYunLU PingZOU MingGuiXIE | 2004 | Chinese Chemical Letters2004，15，4： | 0 |
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