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| 1 | Bifurcation and Chaos Analysis of Nonlinear Rotor System with Axial-grooved Gas-lubricated Journal Bearing Support显示文摘Axial-grooved gas-lubricated journal bearings have been widely applied to precision instrument due to their high accuracy, low friction, low noise and high stability. The rotor system with axial-grooved gas-lubricated journal bearing support is a typical nonlinear dynamic system. The nonlinear analysis measures have to be adopted to analyze the behaviors of the axial-grooved gas-lubricated journal bearing-rotor nonlinear system as the linear analysis measures fail. The bifurcation and chaos of nonlinear rotor system with three axial-grooved gas-lubricated journal bearing support are investigated by nonlinear dynamics theory. A time-dependent mathematical model is established to describe the pressure distribution in the axial-grooved compressible gas-lubricated journal bearing. The time-dependent compressible gas-lubricated Reynolds equation is solved by the differential transformation method. The gyroscopic effect of the rotor supported by gas-lubricated journal bearing with three axial grooves is taken into consideration in the model of the system, and the dynamic equation of motion is calculated by the modified Wilson-θ-based method. To analyze the unbalanced responses of the rotor system supported by finite length gas-lubricated journal bearings, such as bifurcation and chaos, the bifurcation diagram, the orbit diagram, the Poincaré map, the time series and the frequency spectrum are employed. The numerical results reveal that the nonlinear gas film forces have a significant influence on the stability of rotor system and there are the rich nonlinear phenomena, such as the periodic, period-doubling, quasi-periodic, period-4 and chaotic motion, and so on. The proposed models and numerical results can provide a theoretical direction to the design of axial-grooved gas-lubricated journal bearing-rotor system. | ZHANG Yongfang HEI Di Lü Yanjun WANG Quandai MüLLER Norbert | 2014 | Chinese Journal of Mechanical Engineering2014，27，2： | 9 |
| 2 | Application of CVD nanocrystalline diamond films to cemented carbide drills 显示文摘 | Meng X M Tang W Z Hei L F | 2008 | Int J Refractory Metals and Hard Mater2008，26，5： | 1 |
| 3 | Reversible data embedding into images using wavelet techniques and sorting显示文摘 | Kamstra L Hei jmans H J A M | 2005 | IEEE Transactions on Image Processing2005，14，12： | 1 |
| 4 | Life long endogenous es- trogen exposure and later adulthood cognitive function in a population of naturally postmenopausal women from Southern China:the Guangzhou Biobank Cohort Study 显示文摘 | Heys M Jiang C Cheng KK | 2011 | Psychoneu- roendocrinology2011，36，6： | 1 |
| 5 | Volume load paradox while preparing for the Fontan: not too much for the ven-tricle, not too little for the lungs 显示文摘 | GEWILLIG M BROWN S C HEYING R | 2010 | Interact Cardiovasc Thorac Surg2010，10，2： | 1 |
| 6 | Inhibition of rat liver steroid 5α-reductase by 3-Androstene-3-carboxylic acids:Mechanism of enzyme-inhibitor interaction显示文摘 | Levy M A Brandt M Heys J R | 1990 | Biochemistry1990，29，： | 1 |
| 7 | Autoradiographic analysis of odontoblast replacement following pulp exposure in primate teeth显示文摘 | Fitzgerald M Chiego D J Heys DR | 1990 | Arch Oral Biol1990，35，9： | 1 |
| 8 | Using ammonium-tolerant yeast isolates:Candida halophila and Rhodotorula glutinis treat high strength fermentative wastewater显示文摘 | Q Yang M Yang L Hei | 2003 | Environmental Technology2003，24，： | 1 |
| 9 | Loss of betaig-h3 protein is frequent in primary lung carcinoma and related to tumori- genic phenotype in lung cancer cells显示文摘 | Zhao Y El-Gabry M Hei TK | 2006 | Mol Carcinog2006，45，2： | 1 |
| 10 | Links between the rise of the Metazoa and the decline of stromatolites 显示文摘 | Walter M R Heys G R | 1985 | Precambrian Research1985，29，： | 1 |
| 11 | Surgical thrombectomy and stent placerment for iliac compression syndrome 显示文摘 | La Hei ER Appleberg M Roche J | 1997 | Aust ralas Radiol1997，41，3： | 1 |
| 12 | Substitution-permutation networks resistant to differential and linear eryptanalysis 显示文摘 | HEYS M H TAVARES E S | 1996 | Journal of Cryptology1996，9，1： | 1 |
| 13 | The design of product ciphers resistant to differential and linear cryptanalysis 显示文摘 | Heys H M Tavares S E | 1996 | Journal of Cryptology1996，9，1： | 1 |
| 14 | Application of CVD Nanocrystalline Diamond Films to Cemented Carbide Drills 显示文摘 | Meng X M Tang W Z Hei L F | 2008 | International Journal of Refractory Metals and Hard Materials2008，26，5： | 1 |
| 15 | Links between the rise of the Metazoa and the decline of stromatolites 显示文摘 | Waiter M R Heys G R | 1985 | Precam- brian Research1985，29，： | 1 |
| 16 | FPGA Implementation of MD5 Hash Algorithm 显示文摘 | J Deepakumara H M Heys and R Venkatesan | 2001 | Proceedings of the Canadian Conference on Electrical and Computer Engineering CCECE 2001 Toronto Canada2001，29，19924： | 1 |
| 17 | Beta catenin is associated with breast cancer progression in vitro显示文摘 | CALAF G M ALVARADO M E HEI T K | 2005 | Int J Oncol2005，26，4： | 1 |
| 18 | Revisiting the simplified bernouUi equation 显示文摘 | Heys Jeffrey J Holyoak Nicole Calleja Anna M | 2010 | The Open Biomedical Engineering Journal2010，4，： | 1 |
| 19 | Tanshinone rl a alleviates the biochemical changes associated with hypoxic ischemic brain damage in a rat model显示文摘 | Hei M Luo Y Zhang X | 2011 | Phytother Res2011，25，： | 1 |
| 20 | Role of oxidative damage in the genotoxicity of arsenic显示文摘 | Hei TK Filipic M | 2004 | Free Radic Biol Med2004，37，5： | 1 |
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