The Influence of Debonding Interface on the Effective Mechanical Properties for Nano-Composites

Abstract:

Combining the contact elements into the two-scale homogenization method, the effective mechanical properties of nano-composites with a debonding interface are analyzed. A periodic microscopic representative volume element (RVE) is modeled by using a four-phase composite composed of matrix, nano-tube, bonded, and debonding interfaces. The initial stress and coulomb's friction are considered within debonding interface, which is applied to transfer the shear stress produced by the relative slip between nano-tube and matrix, and a simple elastic–plastic constitutive model is established to study the effective mechanical properties of nano-composites. The predicted results show a strong non-linear dependence of the effective mechanical properties on the elastic modulus, volume fraction, debonding length and the ratio of length with thickness of interface.

• Periodical: Advanced Materials Research (Volumes 415-417)
• Pages: 557-561
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.415-417.557
• Online since: December 2011
• Authors: Dong Mei Luo, Ying Long Zhou, Wen Liang Zhu, Wen Xue Wang
• Keywords: Debonding Interface, Effective Mechanical Properties, Nanocomposite

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