UNBALANCE RESPONSE OF A JEFFCOTT ROTOR INCORPORATING SHORT SQUEEZE FILM DAMPERS

被引：21

作者：

ELSHAFEI, A

机构：

[1] Department of Mechanical Design and Production, Cairo University, Cairo

来源：

JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME | 1990年 / 112卷 / 04期

关键词：

D O I：

10.1115/1.2906188

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The steady-state unbalance response of a Jeffcott rotor incorporating short squeeze film dampers executing circular centered whirl is obtained by a fast algorithm. Savings in execution time of the order of fifty times are gained over numerical integration. Fluid inertia forces are included in the model of the squeeze film dampers. The fast algorithm allows parametric studies to be performed. It is shown that fluid inertia results in the excitation of a second mode for the Jeffcott rotor, decreases the possibility of jump resonance, and decreases the useful range of vibration isolation of the dampers. It is also shown that a squeeze film damper with no centering spring (or a very soft spring) may be advantageous with regards to the unbalance response and the vibration isolation capability of the dampers. © 1990 ASME.

引用

页码：445 / 453

页数：9

共 25 条

[11]

RABINOWITZ MD, 1977, ASME, V99, P545

[12]

RABINOWITZ MD, 1977, ASME, V99, P552

[13] ON THE COMPUTATION OF INERTIAL COEFFICIENTS IN SQUEEZE-FILM BEARINGS [J].

RAMLI, MD ;

ELLIS, J ;

ROBERTS, JB .

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE, 1987, 201 (02) :125-131

[14]

REINHARDT E, 1975, ASME, V97, P159

[15]

SANANDRES L, 1986, ASME, V108, P332

[16]

SANANDRES L, 1988, ASME, V110, P51

[17]

SHARMA RK, 1977, ASME77DET3O PAP

[18]

Smith DM, 1964, P I MECH ENG 3J, V179, P37, DOI DOI 10.1243/PIME_CONF_1964_179_264_02

[19]

SZERI AZ, 1983, ASME, V105, P326

[20]

TAYLOR DL, 1980, ASME, V102, P51

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