Title of article :
Modal participation of fixed–fixed single-walled carbon nanotube with vacancies
Author/Authors :
Eltaher, M. A. Mechanical Engineering Department - Faculty of Engineering - King Abdulaziz University, Jeddah , Almalki, T. A. Mechanical Engineering Department - Faculty of Engineering - King Abdulaziz University, Jeddah , Almitani, K. H. Mechanical Engineering Department - Faculty of Engineering - King Abdulaziz University, Jeddah , Ahmed, K. I. E. Mechanical Engineering Department - Faculty of Engineering - King Abdulaziz University, Jeddah , Abdraboh, A. M. Physics Department - Faculty of Science - Banha University, Banha
Abstract :
This article presents an investigation of dynamical behaviors of perfect and defected fixed–fixed single-walled carbon nanotube (SWCNTs) model as a beam structures. The fundamental frequencies and modal participation factors for fixed–fixed-supported SWCTS are considered through this analysis for the first time. Energy-equivalent model is implemented to find a relationship between the energy stored in atomic chemical bonding and potential energy of mechanical beam structure. Nanotube software modeler is exploited to create a geometrical structural of SWCNTs by defining its length of nanotube, bond distance between two atoms, and chiral angle. The tube of SWCNTs are simulated as fixed–fixed-supported structure at both ends, while bonding between each two atoms is modeled by 3D beam element with circular cross section. Parametric results are illustrated to display the effects of vacancy on activation and deactivation of vibration modes, fundamental frequencies, and modal participation factors of SWCNTs.
Keywords :
Free vibrations , Modal participation factors , Energy-equivalent model , Defected SWCNTs , Finite-element analysis , ANSYS mechanical APDL
Journal title :
Astroparticle Physics
