The Analysis of Stiffness for Rubbery Metallic Material Based on Mesoscopic Features

Hong Zuo, Hongbai Bai, Yuhong Feng

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DOI: 10.4236/msa.2011.26090                

Abstract

In this article, deformation and mechanical response of a rubbery metallic material were investigated. First, the mesoscopic structural properties of the material and its evolution during part producing were analyzed and described in detail. Then the inherence relationship between the macroscopic mechanical properties and mesoscopic structural characteristics were studied, in which the related mesoscopic structural characteristics were limited in the basic unit (mm) scale such as the radius of metal wire and unit coil, etc. Furthermore, according to the mesoscopic properties of the material, a curved beam unit based on the mesoscopic scale and shape factor was introduced to bridge the mechanical response and the mesoscopic parameters such as the beam orientation and spatial distribution. In the end, a mesoscopic stiffness model was proposed, from which the macroscopic mechanical properties of material could be deduced from the mesoscopic characteristic size, shape and the mechanical properties of base metallic material.

Keywords

Rubbery Metallic Material, Stiffness Model, Mesoscopic Characteristic

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	D. W. Childs, “The Space Shuttle Main Engine High-Pressure Fuel Turbopump Rotordynamic Instability Problem,” ASME Journal of Engineering for Power, 100 January, 1978, pp. 48-57.
[2]	E. Rivin, “Vibration Isolation of Precision Machinery,” SV, Sound and Vibration, 13, n 8, 1979, pp. 18-23.
[3]	A. B Barnes, “Improvement in Machinery for Woven Wire Mesh,” Wire Industry, 51(605), 1984, pp. 403-404.
[4]	A. Okayasu, T. Ohta and et al, “Vibration Problems in the LE-7 Liquid Hydrogen Turbo pump,” Proceedings of the 26th AIAA Joint Propulsion Conference, Orlando, Florida, 1990, pp.1-5.
[5]	X. Wang and Z. Zhu, “Ring-like metal rubber damper”, Journal of Aerospace Power, 12(2), 1997, pp. 143-145.
[6]	E.M. Al-Khateeb and J.M. Vance, “Experimental Evaluation of a Metal Mesh Bearing Damper in Parallel with a Structural Support,” ASME Paper 2001-GT-0247, presented at the ASME Turbo Expo, 4-7, June, 2001, New Orleans, Louisiana.
[7]	M. Zarzour and J.M. Vance, “Experimental Evaluation of a Metal Mesh Bearing Damper,” Journal of Engineering for Gas Turbines and Power, Transactions of the ASME, Vol. 122, 2000, pp. 326-329.
[8]	B. Ertas, E.M. Al-Khateeb and et al., “Cryogenic Temperature Effects on Metal Mesh Dampers and Liquid Hydrogen Turbo pump Rotor dynamics,” AIAA Paper AIAA- 2002-4164, 2002.
[9]	H Zuo, YH Chen, HB Bai and H Sun, “The Compression Deformation Mechanism of a Metallic Rubber”, International Journal of Mechanics and Materials in Design. 2: 2005, pp. 269-277.