فصلنامه
نوع مقاله : مقاله پژوهشی
نویسندگان
1 استادیار، گروه طراحی جامدات، دانشکده مهندسی مکانیک، دانشگاه صنعتی اراک، اراک، ایران
2 دانشکده مهندسی مکانیک، دانشگاه علم و صنعت ایران، تهران، ایران
3 دانشکده مهندسی راهآهن، دانشگاه علم و صنعت ایران، تهران، ایران
کلیدواژهها
عنوان مقاله English
نویسندگان English
In this research, the primary resonance of a fractional viscoelastic microtube reinforced with graphene nanoplatelets conveying fluid and resting on a nonlinear viscoelastic foundation has been investigated. The main objective of this study is to analyze the effects of the graphene nanoplatelets weight fraction, the coefficients of the nonlinear fractional viscoelastic model, and damping on the nonlinear vibration behavior of the cantilever fluid-conveying microtube system.
Using micromechanics theory, the modified couple stress theory, and mathematical modeling of the mechanical properties of graphene nanoplatelets and nonlinear fractional viscoelasticity within the framework of Euler-Bernoulli beam theory, the governing equations of motion for the fluid-conveying microtube were derived. The equations were discretized using the Galerkin method and subsequently solved by the multiple scales method. The results showed that an increase in the graphene nanoplatelets weight fraction parameter leads to a decrease in the nonlinear stiffness of the system. Furthermore, the response amplitude of the microtube undergoes a very significant reduction with an increase in the fractional viscoelastic derivative parameter. The findings of this investigation can be applied in the design and development of fluid force microscopes, medical instruments, and drug delivery systems.
کلیدواژهها English
