Critical Speed Analysis of Fibre Reinforced Composite Rotor Embedded with Shape Memory Alloy Wires
In the present analysis, the fundamental natural frequency of a Jeffcott and a two-mass rotor with fibre reinforced composite shaft embedded with shape memory alloy (SMA) wires is evaluated by Rayleigh's procedure. The flexibility of rotor supports is taken into account. The effect of three fac...
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| Format: | Article |
| Language: | English |
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Wiley
2000-01-01
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| Series: | International Journal of Rotating Machinery |
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| Online Access: | http://dx.doi.org/10.1155/S1023621X00000191 |
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| author | K. Gupta |
| author_facet | K. Gupta |
| author_sort | K. Gupta |
| collection | DOAJ |
| description | In the present analysis, the fundamental natural frequency of a Jeffcott and a two-mass rotor with fibre reinforced composite shaft embedded with shape memory alloy (SMA) wires is evaluated by Rayleigh's procedure. The flexibility of rotor supports is taken into account. The effect of three factors, either singly or in combination with each other, on rotor critical speed is studied. The three factors are: (i) increase in Young's modulus of SMA (NITINOL) wires when activated, (ii) tension in wires because of phase recovery stresses, and (iii) variation of support stiffness by three times because of activation of SMA in rotor supports. It is shown by numerical examples that substantial variation in rotor critical speeds can be achieved by a combination of these factors which can be effectively used to avoid resonance during rotor coast up/down. |
| format | Article |
| id | doaj-art-89fd9229cce343d5a2eb2026e0c65816 |
| institution | Kabale University |
| issn | 1023-621X |
| language | English |
| publishDate | 2000-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Rotating Machinery |
| spelling | doaj-art-89fd9229cce343d5a2eb2026e0c658162025-02-03T01:10:50ZengWileyInternational Journal of Rotating Machinery1023-621X2000-01-016320121310.1155/S1023621X00000191Critical Speed Analysis of Fibre Reinforced Composite Rotor Embedded with Shape Memory Alloy WiresK. Gupta0Mechanical Engineering Department, Indian Institute of Technology, Hauz Khas, New Delhi 110016, IndiaIn the present analysis, the fundamental natural frequency of a Jeffcott and a two-mass rotor with fibre reinforced composite shaft embedded with shape memory alloy (SMA) wires is evaluated by Rayleigh's procedure. The flexibility of rotor supports is taken into account. The effect of three factors, either singly or in combination with each other, on rotor critical speed is studied. The three factors are: (i) increase in Young's modulus of SMA (NITINOL) wires when activated, (ii) tension in wires because of phase recovery stresses, and (iii) variation of support stiffness by three times because of activation of SMA in rotor supports. It is shown by numerical examples that substantial variation in rotor critical speeds can be achieved by a combination of these factors which can be effectively used to avoid resonance during rotor coast up/down.http://dx.doi.org/10.1155/S1023621X00000191Intelligent/smart rotorsActive control of rotorsComposite rotors with shape memory alloy wiresVibration control during rotor coast up/down. |
| spellingShingle | K. Gupta Critical Speed Analysis of Fibre Reinforced Composite Rotor Embedded with Shape Memory Alloy Wires International Journal of Rotating Machinery Intelligent/smart rotors Active control of rotors Composite rotors with shape memory alloy wires Vibration control during rotor coast up/down. |
| title | Critical Speed Analysis of Fibre Reinforced Composite
Rotor Embedded with Shape Memory Alloy Wires |
| title_full | Critical Speed Analysis of Fibre Reinforced Composite
Rotor Embedded with Shape Memory Alloy Wires |
| title_fullStr | Critical Speed Analysis of Fibre Reinforced Composite
Rotor Embedded with Shape Memory Alloy Wires |
| title_full_unstemmed | Critical Speed Analysis of Fibre Reinforced Composite
Rotor Embedded with Shape Memory Alloy Wires |
| title_short | Critical Speed Analysis of Fibre Reinforced Composite
Rotor Embedded with Shape Memory Alloy Wires |
| title_sort | critical speed analysis of fibre reinforced composite rotor embedded with shape memory alloy wires |
| topic | Intelligent/smart rotors Active control of rotors Composite rotors with shape memory alloy wires Vibration control during rotor coast up/down. |
| url | http://dx.doi.org/10.1155/S1023621X00000191 |
| work_keys_str_mv | AT kgupta criticalspeedanalysisoffibrereinforcedcompositerotorembeddedwithshapememoryalloywires |