پديدآورندگان :
Shafaatian SM, s.mehdi.shafaatian@gmail.com PhD student, Department of Mechanical Engineering, Yazd University, Yazd, Iran , Mahzoon M Professor, Department of Mechanical Engineering, Shiraz University, Shiraz, Iran , Zolanvar A. PhD student, Department of Mechanical Engineering, University of Tehran, Tehran, Iran , Zandi SH MSc student, Department of Mechanical Engineering, Shiraz University, Shiraz, Iran
كليدواژه :
Single , Walled Boron Nitride Nanotubes , Thermo–Mechanical Vibration , Critical Flow Velocity , Nonlocal Elasticity Theory.
چكيده فارسي :
A nonlocal thermo–elastic Bernoulli–Euler beam model is developed for thermo–mechanical vibration and buckling instability of a single-walled boron nitride nanotube (SWBNNT) conveying fluid and resting on an elastic medium. Finite element method is adapted to obtain numerical solutions. The effects of temperature change, aspect ratio, nonlocal parameter and elastic medium constant on the vibration frequency and buckling instability of the nanotube are investigated for different boundary conditions. Numerical results indicate that as the temperature change increases the natural frequency and critical flow velocity decrease. Aspect ratio and nonlocal parameter also have similar effect on natural frequency and critical flow velocity.
