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Study Results from University of Nis Provide New Insights into Composite Materials [Free transverse vibration of nonlocal viscoelastic orthotropic...

August 12, 2014



Study Results from University of Nis Provide New Insights into Composite Materials [Free transverse vibration of nonlocal viscoelastic orthotropic multi-nanoplate system (MNPS) embedded in a viscoelastic medium]

By a News Reporter-Staff News Editor at Journal of Technology -- Investigators discuss new findings in Composite Materials. According to news reporting originating in Nish, Serbia, by VerticalNews journalists, research stated, "Modeling of nano-structure systems using nonlocal theories has received a great attention in recent years. However, there are not so many papers giving the exact solution for the free vibration problem of multiple nano-structure systems especially when damping properties of the system are considered."

The news reporters obtained a quote from the research from the University of Nis, "Here, we analyzed the free transverse vibration of a viscoelastic multi-nanoplate system (MNPS) embedded in a viscoelastic medium taking into account small-scale effects by using the nonlocal theory of Eringen. The modified Kelvin-Voigt viscoelastic constitutive relation was used to model material and nano-scale characteristics of nanoplates. Based on the Kirchhoff-Love plate theory, D' Alembert's principle and viscoelastic constitutive relation, we derived the homogeneous system of m partial differential equations of motion coupled through the viscoelastic interaction. The closed form solutions of undamped natural frequencies and modal damping factor were obtained utilizing the Navies method and trigonometric method for the case of 'Cantilever-Chain' system. The proposed analytical results are verified with the results available in the literature and excellent agreement is achieved."

According to the news reporters, the research concluded: "In addition, we investigated the influences of a nonlocal and viscoelastic parameter, plate aspect ratio and coefficients of a viscoelastic medium on the complex eigenvalues through numerical simulations."

For more information on this research see: Free transverse vibration of nonlocal viscoelastic orthotropic multi-nanoplate system (MNPS) embedded in a viscoelastic medium. Composite Structures, 2014;115():89-99. Composite Structures can be contacted at: Elsevier Sci Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, Oxon, England. (Elsevier - www.elsevier.com; Composite Structures - www.elsevier.com/wps/product/cws_home/405928)

Our news correspondents report that additional information may be obtained by contacting D. Karlicic, Univ Nis, Fac Mech Engn, Nish 18000, Serbia. Additional authors for this research include P. Kozic and R. Pavlovic.

Keywords for this news article include: Nish, Serbia, Europe, Composite Materials

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Source: Journal of Technology


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