A STUDY ON MECHANICAL BEHAVIOR OF FUNCTIONALLY-GRADED CARBON NANOTUBE-REINFORCED NANOCOMPOSITES

作者：Bafekrpour Ehsan; Yang Chunhui^*; Simon George P; Abvabi Akbar; Khoshmanesh Khashayar; Fox Bronwyn L

来源：International Journal of Computational Methods, 2014, 11(supp01): 1344003.

DOI：10.1142/S0219876213440039

• Functionally-graded nanocomposites
• beams
• carbon nanotubes
• first-order shear theory
• finite element modeling (FEM)

In this study, we are focusing on the investigation of the effects of gradient patterns on mechanical behavior of functionally-graded carbon nanotube-reinforced nanocomposites and considering typical beams made of such nanocomposites. Both analytic and finite element-based numerical models were developed. Analytic model was developed based on the first-order shear deformation and Timoshenko beam theories meanwhile finite element models were developed using Abaqus in conjunction with user-defined subroutines for defining the continuously gradient material properties for different gradient patterns. Position-dependent elastic modulus equations for four continuously graded patterns were studied. A nongraded pattern was used for benchmarking with the same geometry and total carbon nanotube (CNT) contents. For validation and verification, the results on both deflection and stress of these nanocomposite beams were analyzed, which clearly showed high influence from gradient patterns on these mechanical behaviors of such beams.

• 出版日期2014-11
• 单位迪肯大学