基于二维厚板模型的波箔片轴承静特性

刘占生; 徐方程; 张广辉; 曹智选

基于二维厚板模型的波箔片轴承静特性

哈尔滨工业大学能源科学与工程学院,哈尔滨 150001

基金项目: 国家自然科学基金(11176010); 航空科学基金(20110377005)

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出版历程
- 收稿日期: 2011-12-15
- 刊出日期: 2012-06-28

Static characterization of bump-type gas foil bearing: intergration of top foil 2-D thick plate model

School of Energy Science and Engineering, Harbin Institute of Technology,Harbin 150001,China

摘要

摘要: 建立平箔片的二维厚板有限元模型,运用有限单元法和有限差分法耦合求解Reynolds方程和气膜厚度方程,研究了在两个工作转速下气体波箔片轴承在中截面和边缘处最小气膜厚度随轴承承载力变化规律.通过数值仿真对该模型、一维梁模型、二维薄壳模型和文献实验数据进行对比分析,结果表明:在轴承中截面处,3个模型的最小气膜厚度仿真结果都与实验结果符合得很好,但在轴承边缘处,由于二维厚板模型考虑了平箔片的剪切效应,因此其最小气膜厚度比二维薄壳模型的结果更接近实验值,而一维梁模型只考虑轴承圆周方向,因此不能体现气膜厚度沿轴承长度方向的变化规律.通过研究,为分析箔片轴承动力学特性奠定了理论基础.
- 波箔型气体径向轴承 /
- 二维厚板模型 /
- 有限单元法 /
- 最小气膜厚度 /
- 承载力
Abstract: The 2-D(two-dimensional) thick plate finite element model for top foil was developed.By using coupled finite element mothod and finite difference method,the compressible gas lubricated Reynolds equation and the film thickness equation were solved coupling together.Predictions of minimum gas film thickness for increasing static loads at two speeds were obtained for bearing mid-plane and edge of bump-type gas foil bearing.The numerical results of this finite element model were compared with 1-D(one-dimensional) beam model model,2-D shin shell model and test data.The results indicate that the minimum film thickness of three models agree well with test data at bearing min-plane,but at bearing edge,the accuracy of 2-D thick plate model is the highest due to its shear effect.1-D beam model can not reflect film thickness variation along the bearing length direction because it only considers the circumferential direction.The study in this paper established the theoretical foundation of dynamic characteristics research of bump-type gas foil bearing.
- bump-type gas foil bearing /
- 2-D thick plate model /
- finite element method /
- minimum gas film thickness /
- load capacity

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参考文献(19)

[1]	Agrawal G L.Foil air/gas bearing technology:an overview .ASME Paper 97-GT-347,1997.
[2]	Kim D,Creary A,Chang S S,et al.Mesoscale foil gas bearings for palm-sized turbomachinery:design,manufacturing,and modeling[J].Journal of Engineering for Gas Turbines Power,2009,131(4):042502(10 pages).
[3]	Feng K,Kaneko S.Analytical model of bump-type foil bearings using a link-spring structure and a finite-element shell model[J].ASME Journal of Tribology,2010,132(2):021706(11 pages).
[4]	Blok H,van Rossum J J.The foil bearing:a new departure in hydrodynamic lubrication[J].Lubrication Engineering,1953,9(6):316-320.
[5]	Walowit J A,Anno J N.Modern developments in lubrication mechanics[M].London:Applied Science Publishers Limited,1975.
[6]	Heshmat H,Walowit J A,Pinkus O.Analysis of gas-lubricated foil journal bearings[J].ASME Journal of Lubrication Technology,1983,105(4):647-655.
[7]	Heshmat H,Walowit J A,Pinkus O.Analysis of gas-lubricated complaint thrust bearings[J].ASME Journal of Lubrication Technology,1983,105(4):638-646.
[8]	Peng Z C,Khonsari M M.Hydrodynamic analysis of compliant foil bearings with compressible air flow[J].Transactions of the ASME,2004,126(3):542-546.
[9]	Peng Z C,Khonsari M M.On the limiting load-carrying capacity of foil bearings[J].ASME Journal of Tribology,2004,126(4):817-818.
[10]	Peng Z C,Khonsari M M.A thermohydrodynamic analysis of foil journal bearings[J].Transactions of the ASME,2006,128(3):534-541.
[11]	Song J,Daejong M.A new foil bearing with compression springs as compliant structure for microturbomachinery Applications .ASME Paper 2006-GT-90964,2006.
[12]	Lee D H,Kim Y C,Kim K W.The static and dynamic performance analyses of air foil journal bearings for various bump foil stiffness[J].Journal of Korean Society of Tribologists and Lubrication Engineers,2004,20(5):245-251.
[13]	San Andrés L,Kim T H.Improvements to the analysis of gas foil bearings integrating of top foil 1D and 2D structural models .ASME Paper 2007-GT-27249,2007.
[14]	San Andrés L,Kim T H.Analysis of gas foil bearings integrating fe top foil models [J].Tribology International,2009,42(1):111-120.
[15]	Lee D H,Kim Y C,Kim K W.The static performance analyses of foil journal bearings considering three-dimensional shape of the foil structure[J].Journal of Tribology,2008,130(3):031102(10 pages).
[16]	Kim T H,San Andrés L.Heavily loaded gas foil bearings:a model anchored to test data .ASME Paper 2005-GT-68486,2005.
[17]	Maurice Petyrt.Introduction to finite element vibration analysis[M].2nd ed.New York:Cambridge University Press,2010.
[18]	赵均海,汪梦普.弹性力学及有限元[M].2版.武汉:武汉理工大学出版社,2008.
[19]	Ruscitto D,Mc Cormick J,Gray S.Hydrodynamic air lubricated compliant surface bearing for an automotive gas turbine engineⅠ:journal bearing performance .NASA CR-135368,1987.