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Multilayer Composite Materials with Non-Usual Poisson's Ratios

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Abstract:

Most of usual materials exhibit Poisson's ratio comprised between 0 and 0.5. But, for some kind of cellular materials, or for some stacking sequences of unidirectional plies, a composite material can exhibit negative or greater than 0.5 Poisson's ratios. In this paper, a study of different stacking sequences such as [±β/±θ]s plies made from highly anisotropic fibre pre-preg is presented. A special computer programme has been developed for this purpose. Eighteen stacking sequences, including the [±θ] ones, have been computed. The results show that at least one of Poisson's ratios varies between -0.8 to +0.4. Such kind of materials may find applications for particular cases, as their strength is significantly increased by this phenomenon.

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Periodical:

Materials Science Forum (Volume 555)

Pages:

545-552

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.555.545

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Online since:

September 2007

Authors:

E.H. Harkati, Z. Azari, P. Jodin, A. Bezazi

Keywords:

Composite, Computation, Mechanical Property, Multilayer

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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