Rotating Disks Made from Materials with Negative Poisson's Ratio

Abstract:

Auxetic materials are those that exhibit negative Poissons ratio. In spite of their rarity, auxetic materials have been artificially produced and also found to exist are known to exist naturally. Arising from their anomalous behavior, research on auxetic materials has been carried out for possible applications in fields as diverse as biomechanics and aero-structures. This paper investigates the effect of auxeticity on the maximum stress in thin and thick rotating disks. The obtained results show that maximum stresses are lower in rotating thin disks that are made from negative Poissons ratio materials. It is also revealed that the maximum stresses in thick rotating disks can be reasonably approximated by rotating thin disk theory if the thick disk material possesses negative Poissons ratio.

• Periodical: Advanced Materials Research (Volume 804)
• Pages: 347-352
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.804.347
• Online since: September 2013
• Authors: Teik Cheng Lim
• Keywords: Auxetic Materials, Maximum Stress, Rotating Disks

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