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Coupled Systems Mechanics Volume 5, Number 3, September 2016 , pages 255-267 DOI: https://doi.org/10.12989/csm.2017.5.3.255 |
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Dynamic modeling of embedded curved nanobeams incorporating surface effects |
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Farzad Ebrahimi and Mohsen Daman
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| Abstract | ||
| To investigate the surface effects on vibration of embedded circular curved nanosize beams, nonlocal elasticity model is used in combination with surface properties including surface elasticity, surface tension and surface density for modeling the nano scale effect. The governing equations are determined via the energy method. An-alytically Navier method is utilized to solve the governing equations for simply supported at both ends. Solving these equations enables us to estimate the natural frequency for circular curved nanobeam including Winkler and Pasternak elastic foundations. The results determined are verified by comparing the results by available ones in literature. The effects of various parameters such as nonlocal parameter, surface properties, Winkler and Pasternak elastic foundations and opening angle of circular curved nanobeam on the natural frequency are suc-cessfully studied. The results reveal that the natural frequency of circular curved nanobeam is significantly in-fluenced by these effects. | ||
| Key Words | ||
| vibration; curved nanobeam; surface effects; elastic foundation | ||
| Address | ||
| Farzad Ebrahimi and Mohsen Daman: Department of Mechanical Engineering, Faculty of Engineering, Imam Khomeini International University, Qazvin, Iran | ||
