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Advances in Materials Research Volume 15, Number 2, May 2026 , pages 107-124 DOI: https://doi.org/10.12989/amr.2026.15.2.107 |
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Dynamic stability analysis and optimization of structural management in nanocomposite-reinforced structures under external excitation |
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Suleiman Ibrahim Mohammad, Asokan Vasudevan, Bashar Tarawneh,
Torki M. Al-Fawwaz, Chen Wenchang
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| Abstract | ||
| The dynamic stability of structural systems reinforced by nanocomposites under dynamic loads have become increasingly important because of their multifunctional capabilities as a result of carbon nanotube (CNT) reinforcement. The present study provides an analytical framework for evaluating and optimizing dynamic stability of CNT-reinforced structural members using first-order shear deformation theory (FSDT). The transverse and shear strains have been assumed to have a linear relation to their respective displacements so that the effects of shear deformation can be accurately determined; this is very important for structural members that are of medium thickness. The constitutive behavior of the material will be based on Hooke's law using the effective elastic properties of CNT-reinforced nanocomposites derived through micromechanical homogenization techniques. The equations of motion are established through Hamilton's principle, yielding a variationally consistent formulation of the kinetic, potential, and work contributions for the system. In order to obtain closed-form solutions, the displacement fields are represented as a double trigonometric series in the context of the classical Navier approach, while also meeting simply supported boundary conditions at each end connection. The resulting eigenvalue problem establishes the critical dynamic stability boundaries, as well as principal parametric resonance states for the system. The parametric studies emphasize that important contributions to dynamic response and stability margins arise from the CNT volume fraction, the distribution of the CNTs, and the geometry of the structure. Through optimization analysis, the results show that using a specifically tailored arrangement of CNTs will significantly increase the stiffness of the structure, extend the time before instability occurs, and reduce the sensitivity of the structure to the excitation frequency/ampitude. This new method provides a sound analytical basis for the design and structural management of advanced CNT reinforced components for engineering applications where lightweight/high-strength/ dynamically stable materials are needed. | ||
| Key Words | ||
| carbon nanotube reinforcement; dynamic stability analysis; nanocomposite structural optimization; Navier solution method; structural management | ||
| Address | ||
| Suleiman Ibrahim Mohammad: Electronic Marketing and Social Media, Economic and Administrative Sciences Zarqa University, Jordan/ INTI International University, 71800 Negeri Sembilan, Malaysia Asokan Vasudevan: Faculty of Business and Communications, INTI International University, 71800 Negeri Sembilan, Malaysia Bashar Tarawneh: Hourani Center for Applied Scientific Research, Al-Ahliyya Amman University, Amman, Jordan/ Faculty of Engineering, University of Jordan University, Amman, Jordan Torki M. Al-Fawwaz: College of Commerce and Business, Lusail University, Qatar Chen Wenchang: Guizhou Qiannan College of Science and Technology, Huishui County, Buyi and Miao Autonomous Prefecture, Guizhou Province, 550600 China | ||
