Nonlocal Vibration of Embedded Coupled CNTs Conveying Fluid Under Thermo-Magnetic Fields Via Ritz Method

چکیده مقاله

In this work, nonlocal vibration of double of carbon nanotubes (CNTs) system conveying fluid coupled by visco-Pasterna k medium is carried out based on nonlocal elasticity theory where CNTs are placed in uniform temperature change and magnetic field. Considering Euler-Bernoulli beam (EBB) model and Knuds en number, the governing equations of motion are discretized and Ritz method is appl ied to obtain the frequency of coupled CNTs system. The detailed parametric study is condu cted, focusing on the remarkable effects of the Knudsen number, aspect ra tio, small scale, thermo-ma gnetic fields, velocity of conveying fluid and visco-Paster nak medium on the stability of coupled system. The results indicate that magnetic field has significant ef fect on stability of coupled system. Also, it is found that trend of figures ha ve good agreement with the prev ious researches. Results of this investigation could be applied for optimum design of nano/micro mechanical devices for controlling stability of coupled systems conveying fluid under thermo-magnetic fields.