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Proceedings Paper

Study on theoretic model of metallic pseudo rubber based on contact microbeams theory and finite element simulation
Author(s): Suchao Li; Hui Li; Chenxi Mao; Wentao Wang; Yagebai Zhao
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Paper Abstract

Stainless Steel Metallic Pseudo Rubber (SSMPR) and Shape Memory Alloy Metallic Pseudo Rubber (SMAMPR) are novel porous materials with high elasticity and large restorable deformation, and they are also ideal material for three dimensional isolators or Shock Absorber Devices (SADs). However, the theories on the constitutive model of metallic rubber are seldom studied due to its complicated microstructure. A theory of contact micro-beams with equal section is presented in this study, in which the friction between the metal wires in metallic rubber is considered according to Coulomb's friction law. Firstly, the nonlinear rigidity of the micro-beams in the loading process is derived according to the simplified mathematical model. Then, the parameters in the theoretic model are also determined through establishing the relationship between the macro-structure and the micro-structure based on the law of mass conservation and the probability theory. Especially, the number of contact points between the surfaces of the micro-beams is estimated according to a mathematical function. Finally, combined with the finite element method, the results of normalized stress-strain relationships under compression are obtained and compared with the experimental data.

Paper Details

Date Published: 15 April 2011
PDF: 10 pages
Proc. SPIE 7982, Smart Sensor Phenomena, Technology, Networks, and Systems 2011, 798216 (15 April 2011); doi: 10.1117/12.880498
Show Author Affiliations
Suchao Li, Harbin Institute of Technology (China)
Hui Li, Harbin Institute of Technology (China)
Chenxi Mao, China Earthquake Administration (China)
Wentao Wang, Harbin Institute of Technology (China)
Yagebai Zhao, Jilin Univ. (China)

Published in SPIE Proceedings Vol. 7982:
Smart Sensor Phenomena, Technology, Networks, and Systems 2011
Wolfgang Ecke; Kara J. Peters; Theodore E. Matikas, Editor(s)

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