西华大学学报（自然科学版）2025，Vol.44Issue(5)：1-7,7.DOI:10.12198/j.issn.1673-159X.5057
弹性地基中碳纳米管磁流体输送系统振动分析
Vibration Analysis of Carbon Nanotube Magnetic-fluid Flow Conveying System in Elastic Foundation
摘要
Abstract
To analyze the dynamic stability for a cantilevered single-walled carbon nanotube(SW-CNT)conveying magnetic-fluid flow embedded in double-parameter foundation under longitudinal magnet-ic field,the governing equations of motion and boundary conditions were obtained based on the magneto-hydrodynamics and nonlocal Euler-Bernoulli beam model.Applying the differential quadrature method(DQM),the vibration differential equation was solved.The effects of the nonlocal parameter,magnetic field,magnetic-fluid flow and the parameters of elastic foundation on vibration of carbon nanotube were discussed.The numerical calculation results indicate that as the external magnetic field and elastic founda-tion parameters increase,the critical instability flow velocity of the system increases,and the dynamic sta-bility of the system is enhanced.However,the nonlocal parameter increases,the critical instability flow ve-locity decreases,and the dynamic stability of the system weakens.It is particularly important that compared to the case of conveying non-magnetic fluid,the carbon nanotube conveying magnetic fluid will be more stable under the magnetic field.关键词
振动/碳纳米管/磁流体/Pasternak弹性地基/微分求积法(DQM)Key words
vibration/carbon nanotube/magnetic-fluid flow/Pasternak elastic foundation/differential quadrature method(DQM)分类
数理科学引用本文复制引用
李明,周俊汝,邓乾..弹性地基中碳纳米管磁流体输送系统振动分析[J].西华大学学报（自然科学版）,2025,44(5):1-7,7.基金项目
国家自然科学基金项目(51909196). （51909196）
