Abstract
The objective of this innovative research is assessment of dynamic stability for a hybrid nanocomposite polymer beam. The considered beam formed by multiphase nanocomposite, including polymer–carbon nanotubes (CNTs)–carbon fibers (CFs). Hence, as to compute the effective material characteristics related to multiphase nanocomposite layers, the Halpin–Tsai model, as well as micromechanics equations are employed. To model the structure realistically, exponential shear deformation beam theory (ESDBT) is applied and using energy methods, governing equations are achieved. Moreover, differential quadrature method (DQM) as well as Bolotin procedures are used for solving the obtained governing equations and the dynamic instability region (DIR) relative to the beam is determined. To extend this novel research, various parameters pinpointing the influences of CNT volume fraction, CFs volume percent, boundary edges as well as the structure’s geometric variables on the dynamic behavior of the beam are presented. The results were validated with the theoretical and experimental results of other published papers. The outcomes reveal that increment of volume fraction of CNT is able to shift DIR to more amounts of frequency. Further, rise of carbon fibers volume percent leads to increase the excitation frequency of this structure.
Highlights
When a structure is subjected to periodic and pulsatile loads, it is well known that the ordinary forced response will lead to dynamic instability
Of a hybrid nanocomposite polymer beam reinforced via carbon fibers (CFs) as well as carbon nanotubes (CNTs) using we examine the beams composed by multiphase nanocomposites, including carbon/fiber/CNT/
We examine the beams composed by multiphase nanocomposites, polymer whichincluding the responses of beams are extracted micromechanics—as wellare as extracted
Summary
When a structure is subjected to periodic and pulsatile loads, it is well known that the ordinary forced response will lead to dynamic instability. Galerkin method is used for solving the equations and the influence of dispersion of CNTs and their volume fraction and other parameters are taken into account. Investigated buckling evaluation of FG-CNTRC plates in thermal environment In this various parameters including different boundary conditions and aspect ratio, the influence of CNTs study, besides various parameters including different boundary conditions and aspect are discussed. Ratio, the influence of CNTs are discussed They indicated that FG-X distribution type is the wave dispersion of FG nanocomposites which are reinforced through CNTs are investigated by better choice. No research has been conducted studying and analyzing the dynamic behavior hybrid nanocomposite polymer beam reinforced via CFs as well as CNTs using ESDBT. Suchasaswell the as influences of CNT volume fraction, on the dynamic behavior of the boundary beam. Volume percent, edges as well as the structure’s geometric variables on the dynamic behavior of the beam
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