Abstract
The influence of carbon nanotube functionalization on damping characteristics of SWNT-based composites is investigated for the first time with a sequential multiscale approach. The process consists of two parts. First, the interfacial shear strength between the functionalized nanotube and the epoxy is calculated by simulating a SWNT pull-out test using the molecular dynamics method. The strength values obtained from atomic simulation are then applied to a micromechanical damping model of a representative unit cell of a SWNT/epoxy composite under cyclic loading. The analysis results indicate that the nanotube functionalization increases the interfacial shear strength. Due to the stick-slip motion at the interfacial surface, the effective loss factor of the epoxy with functionalized nanoropes is sensitive to the applied load/stress. The increased shear strength can either enhance or reduce the damping ability of the composite, depending on the operational load/stress range and nanotube aspect ratio.
Original language | English (US) |
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Pages (from-to) | 1748-1755 |
Number of pages | 8 |
Journal | Composites Part A: Applied Science and Manufacturing |
Volume | 42 |
Issue number | 11 |
DOIs | |
State | Published - Nov 2011 |
All Science Journal Classification (ASJC) codes
- Ceramics and Composites
- Mechanics of Materials