HIERARCHICAL MULTISCALE MODELING OF THE EFFECT OF CARBON NANOTUBE DAMAGE ON THE ELASTIC PROPERTIES OF POLYMER NANOCOMPOSITES

作者：Dominguez Rodriguez G^*; Chaurasia A K; Seidel G D; Tapia A; Aviles F

来源：Journal of Mechanics of Materials and Structures, 2017, 12(3): 263-287.

DOI：10.2140/jomms.2017.12.263

• Mori-Tanaka
• composite cylinder method
• SWCNT
• polymer
• elastic properties
• multiscale
• FEA

The influence of various levels of carbon nanotube (CNT) structural damage on the transversely isotropic elastic properties of CNTs and CNT/polymer composites is investigated through a hierarchical multiscale modeling strategy. Assessment of the effect of structural damage on the CNTs is first conducted by removing C-C bonds and using atomistic finite element analysis. The composite cylinder method is then used to model composites whose effective properties are obtained from the Mori-Tanaka method. The axial, radial, transverse shear and in-plane shear moduli of CNTs decrease similar to 70% for 10% damage. This decrease is more pronounced for CNTs with small radii, and when the broken bonds coalesce. The transverse Poisson's ratio of CNTs increases about six times for 10% damage. When these defective CNTs are used in polymer composites, the axial elastic modulus of the composite reduces by similar to 80% while the transverse Poisson's ratio increases about three times.

• 出版日期2017-5