Dynamic response of phenolic resin and its carbon-nanotube composites to shock wave loading Academic Article

abstract

• We investigate with nonreactive molecular dynamics simulations the dynamic response of phenolic resin and its carbon-nanotube (CNT) composites to shock wave compression. For phenolic resin, our simulations yield shock states in agreement with experiments on similar polymers except the phase change observed in experiments, indicating that such phase change is chemical in nature. The elasticplastic transition is characterized by shear stress relaxation and atomic-level slip, and phenolic resin shows strong strain hardening. Shock loading of the CNT-resin composites is applied parallel or perpendicular to the CNT axis, and the composites demonstrate anisotropy in wave propagation, yield and CNT deformation. The CNTs induce stress concentrations in the composites and may increase the yield strength. Our simulations suggest that the bulk shock response of the composites depends on the volume fraction, length ratio, impact cross-section, and geometry of the CNT components; the short CNTs in current simulations have insignificant effect on the bulk response of resin polymer.

authors

• Cagin, Tahir

published proceedings

• JOURNAL OF APPLIED PHYSICS

author list (cited authors)

• Arman, B., An, Q., Luo, S. N., Desai, T. G., Tonks, D. L., Cagin, T., & Goddard, W.

citation count

• 32

complete list of authors

• Arman, B||An, Q||Luo, SN||Desai, TG||Tonks, DL||Cagin, T||Goddard, WAIII

publication date

• January 2011

publisher

• AIP Publishing  Publisher

keywords

• 40 Engineering
• 4001 Aerospace Engineering
• 4016 Materials Engineering
• Bioengineering
• Nanotechnology

Digital Object Identifier (DOI)

• 10.1063/1.3524559

start page

• 013503

volume

• 109

issue

• 1

URL

• http://dx.doi.org/10.1063/1.3524559