Finite Element Analysis of Thermo-Mechanical Vibration and Instability of Single Wall Boron Nitrid Nano Tube Conveying Fluid Embedded In an Elastic Medium Using Nonlocal Elasticity Theory

A nonlocal thermo–elastic Bernoulli–Euler beam model is developed for thermo–mechanical vibration andbuckling instability of a single-walled boron nitride nanotube (SWBNNT) conveying fluid and resting on an elasticmedium. Finite element method is adapted to obtain numerical solutions. The effects of temperature change, aspectratio, nonlocal parameter and elastic medium constant on the vibration frequency and buckling instability of thenanotube are investigated for different boundary conditions. Numerical results indicate that as the temperaturechange increases the natural frequency and critical flow velocity decrease. Aspect ratio and nonlocal parameter alsohave similar effect on natural frequency and critical flow velocity.

کلیدواژه ها:

Single-walled boron nitride nanotubes ، Thermo–mechanical vibration ، Critical flow velocity ، Nonlocal elasticity theory