Stress-driven nonlocal elasticity for the instability analysis of fluid-conveying C-BN hybrid-nanotube in a magneto-thermal environment

Hamid M. Sedighi*, Hassen M. Ouakad, Rossana Dimitri, Francesco Tornabene

*المؤلف المقابل لهذا العمل

نتاج البحث: المساهمة في مجلةمقالمراجعة النظراء

70 اقتباسات (Scopus)

ملخص

The Eringen's strain-driven nonlocal differential model is well-established to exhibit inconsistencies when applied to bounded continua of applicative interest. The stress-driven nonlocal theory leads instead to well-posed nonlocal elastic formulations demonstrating stiffening structural responses. In the present article, using the stress-driven nonlocal model, a comprehensive analysis is conducted to explore the vibrational characteristics and critical divergence velocity of a hybrid-nanotube constructed by carbon (C) and boron nitride (BN) nanotubes conveying magnetic fluid. The impact of size-dependence, magnetic field and thermal medium on the dynamic behavior of the systems is included in the proposed model. The obtained governing equations of two-segment nanotubes are then examined using the finite element method. It is interestingly showed that the threshold of the divergence/flutter instability of the system would be enhanced by employing a hetero-nanotube instead of a nanotube composed of a uniform material. Furthermore, the results demonstrate that the configuration of the mode shapes may be dramatically changed for a nanotube conveying fluid. Therefore, the classical modes do no longer exist, and should not be considered in the dynamics of the system. It is also shown that by assuming a low temperature medium, the critical velocity increases by increasing the temperature and decreases in the case of high temperature.

اللغة الأصليةEnglish
رقم المقال065204
دوريةPhysica Scripta
مستوى الصوت95
رقم الإصدار6
المعرِّفات الرقمية للأشياء
حالة النشرPublished - يونيو 2020
منشور خارجيًانعم

ASJC Scopus subject areas

  • ???subjectarea.asjc.3100.3107???
  • ???subjectarea.asjc.2600.2610???
  • ???subjectarea.asjc.3100.3104???

بصمة

أدرس بدقة موضوعات البحث “Stress-driven nonlocal elasticity for the instability analysis of fluid-conveying C-BN hybrid-nanotube in a magneto-thermal environment'. فهما يشكلان معًا بصمة فريدة.

قم بذكر هذا