On the modeling of open and breathing cracks of a cracked rotor system

Mohammad A. Al-Shudeifat, Eric Butcher

Research output: Chapter in Book/Report/Conference proceedingConference contribution

10 Citations (Scopus)

Abstract

The modeling of a cracked rotor system with an open or breathing transverse crack is addressed here. The cracked rotor with an open crack model behaves as an asymmetric shaft. Hence, the time-varying area moments of inertia of the cracked section are employed in formulating the periodic finite element stiffness matrix for both crack models which yields a linear time-periodic system. The harmonic balance method (HB) is used in solving the finite element (FE) equations of motions for studying the dynamic behavior of the cracked rotor system. The unique behavior of the whirl orbits during the passage through the subcritical rotational speeds and the sensitivity of these orbits to the unbalance force direction can be used for early crack detection of the cracked rotor for both crack models. These whirl orbits were verified experimentally for the open crack model in the neighborhood of 1/2 of the first critical rotational speed where a good match with the theoretical whirl orbits was observed.

Original languageEnglish (US)
Title of host publicationProceedings of the ASME Design Engineering Technical Conference
Pages919-928
Number of pages10
Volume5
DOIs
StatePublished - 2010
Externally publishedYes
EventASME 2010 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE2010 - Montreal, QC, Canada
Duration: Aug 15 2010Aug 18 2010

Other

OtherASME 2010 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE2010
CountryCanada
CityMontreal, QC
Period8/15/108/18/10

Fingerprint

Rotor
Crack
Rotors
Cracks
Orbits
Orbit
Modeling
Crack Detection
Finite Element
Crack detection
Harmonic Balance
Moment of inertia
Time varying systems
Periodic Systems
Stiffness matrix
Stiffness Matrix
Model
Dynamic Behavior
Equations of motion
Linear Time

ASJC Scopus subject areas

  • Mechanical Engineering
  • Computer Graphics and Computer-Aided Design
  • Computer Science Applications
  • Modeling and Simulation

Cite this

Al-Shudeifat, M. A., & Butcher, E. (2010). On the modeling of open and breathing cracks of a cracked rotor system. In Proceedings of the ASME Design Engineering Technical Conference (Vol. 5, pp. 919-928) https://doi.org/10.1115/DETC2010-28289

On the modeling of open and breathing cracks of a cracked rotor system. / Al-Shudeifat, Mohammad A.; Butcher, Eric.

Proceedings of the ASME Design Engineering Technical Conference. Vol. 5 2010. p. 919-928.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Al-Shudeifat, MA & Butcher, E 2010, On the modeling of open and breathing cracks of a cracked rotor system. in Proceedings of the ASME Design Engineering Technical Conference. vol. 5, pp. 919-928, ASME 2010 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE2010, Montreal, QC, Canada, 8/15/10. https://doi.org/10.1115/DETC2010-28289
Al-Shudeifat MA, Butcher E. On the modeling of open and breathing cracks of a cracked rotor system. In Proceedings of the ASME Design Engineering Technical Conference. Vol. 5. 2010. p. 919-928 https://doi.org/10.1115/DETC2010-28289
Al-Shudeifat, Mohammad A. ; Butcher, Eric. / On the modeling of open and breathing cracks of a cracked rotor system. Proceedings of the ASME Design Engineering Technical Conference. Vol. 5 2010. pp. 919-928
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