contributor author | C. Kessler | |
contributor author | J. Kim | |
date accessioned | 2017-05-09T00:09:06Z | |
date available | 2017-05-09T00:09:06Z | |
date copyright | July, 2002 | |
date issued | 2002 | |
identifier issn | 1048-9002 | |
identifier other | JVACEK-28862#340_1.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/127698 | |
description abstract | A complex variable description of planar motion incorporates directivity as inherent information which is therefore very convenient in vibration analysis of rotors. This paper proposes to use the directional information explicitly when the equation of motion of a rotor is formulated in complex variables. It is shown that the free vibration solution to the equation of motion formulated as such can be defined as the directional natural mode because it describes not only the shape and frequency but also the direction of the free vibration response. The directional frequency response functions (dFRFs) that have been used recently are obtained as the solution to the forced vibration solution to the equation of motion. Symmetric and anti-symmetric motions of a geometrically symmetric rigid rotor are used as examples to explain these concepts and their practical significances. The proposed approach allows clear understanding and definitions of some unique characteristics of rotor vibrations, such as the forward and backward modes, and forward and backward critical speeds, which have been often used in confusing or incorrect ways. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Vibration Analysis of Rotors Utilizing Implicit Directional Information of Complex Variable Descriptions | |
type | Journal Paper | |
journal volume | 124 | |
journal issue | 3 | |
journal title | Journal of Vibration and Acoustics | |
identifier doi | 10.1115/1.1467649 | |
journal fristpage | 340 | |
journal lastpage | 349 | |
identifier eissn | 1528-8927 | |
keywords | Motion | |
keywords | Rotors AND Equations of motion | |
tree | Journal of Vibration and Acoustics:;2002:;volume( 124 ):;issue: 003 | |
contenttype | Fulltext | |