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Free vibrations and stability of high-speed rotating carbon nanotubes partially resting on Winkler foundations

Torkaman Asadi, M. A ; Sharif University of Technology | 2015

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  1. Type of Document: Article
  2. DOI: 10.1016/j.compstruct.2015.02.037
  3. Publisher: Elsevier Ltd , 2015
  4. Abstract:
  5. In the present study, free vibrations and stability of rotating single walled carbon nanotubes (SWCNT) is investigated by nonlocal theory of elasticity; while the CNT is partially resting on an elastic foundation. The governing equations of motion are presented by using Love's shell assumptions. An exact series expansion method of solution is employed and very accurate results are obtained. Some parameter studies including the effects of rotating speed, foundation stiffness, slenderness ratio and nonlocal parameter on the natural frequency and stability margins of the current model are studied. The studies show that rotation rates and foundation elasticity can contribute significantly in the dynamic characteristics of rotating MEMS devices
  6. Keywords:
  7. Free vibrations ; Nanomotor ; Nonlocal elasticity ; Carbon ; Carbon nanotubes ; Elasticity ; Equations of motion ; Foundations ; Yarn ; Dynamic characteristics ; Free vibration ; Governing equations of motion ; Nanomotors ; Non-local elasticities ; Series expansion methods ; Singlewalled carbon nanotube (SWCNT) ; Size effects
  8. Source: Composite Structures ; Volume 126 , 2015 , Pages 52-61 ; 02638223 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S0263822315001166