This paper evaluates the elastic stability and vibration characteristics of circular plates made from auxetic materials. By solving the general solutions for buckling and vibration of circular plates under various boundary conditions, the critical buckling load factors and fundamental frequencies of circular plates, within the scope of the first axisymmetric modes, were obtained for the entire range of Poisson's ratio for isotropic solids, i.e., from −1 to 0.5. Results for elastic stability reveal that as the Poisson's ratio of the plate becomes more negative, the critical bucking load gradually reduces. In the case of vibration, the decrease in Poisson's ratio not only decreases the fundamental frequency, but the decrease becomes very rapid as the Poisson's ratio approaches its lower limit. For both buckling and vibration, the plate's Poisson's ratio has no effect if the edge is fully clamped. The results obtained herein suggest that auxetic materials can be employed for attaining static and dynamic properties which are not common in plates made from conventional materials. Based on the exact results, empirical models were generated for design purposes so that both the critical buckling load factors and the frequency parameters can be conveniently obtained without calculating the Bessel functions.
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S599491,
e-mail: alan_tc_lim@yahoo.com
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April 2014
Research-Article
Buckling and Vibration of Circular Auxetic Plates
Teik-Cheng Lim
SIM University,
S599491,
e-mail: alan_tc_lim@yahoo.com
Teik-Cheng Lim
School of Science and Technology
,SIM University,
461 Clementi Road
,S599491,
Singapore
e-mail: alan_tc_lim@yahoo.com
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Teik-Cheng Lim
School of Science and Technology
,SIM University,
461 Clementi Road
,S599491,
Singapore
e-mail: alan_tc_lim@yahoo.com
Contributed by the Materials Division of ASME for publication in the JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY. Manuscript received December 18, 2013; final manuscript received January 27, 2014; published online February 19, 2014. Assoc. Editor: Irene Beyerlein.
J. Eng. Mater. Technol. Apr 2014, 136(2): 021007 (6 pages)
Published Online: February 19, 2014
Article history
Received:
December 18, 2013
Revision Received:
January 27, 2014
Citation
Lim, T. (February 19, 2014). "Buckling and Vibration of Circular Auxetic Plates." ASME. J. Eng. Mater. Technol. April 2014; 136(2): 021007. https://doi.org/10.1115/1.4026617
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