Dynamic and buckling analysis of polymer hybrid composite beam with variable thickness

doi:10.1007/s10483-020-2610-7

Abstract

Abstract: This work deals with a study of the dynamic and buckling analysis of polymer hybrid composite (PHC) beam. The beam has variable thickness and is reinforced by carbon nanotubes (CNTs) and nanoclay (NC) simultaneously. The governing equations are derived based on the first shear deformation theory (FSDT). A three-phase HalpinTsai approach is used to predict the mechanical properties of the PHC. We focus our attention on the effect of the simultaneous addition of NC and CNT on the vibration and buckling analysis of the PHC beam with variable thickness. Also a comparison study is done on the sensation of three impressive parameters including CNT, NC weight fractions, and the shape factor of fillers on the mechanical properties of PHC beams, as well as fundamental frequencies of free vibrations and critical buckling load. The results show that the increase of shape factor value, NC, and CNT weight fractions leads to considerable reinforcement in mechanical properties as well as increase of the dimensionless fundamental frequency and buckling load. The variation of CNT weight fraction on elastic modulus is more sensitive rather than shear modulus but the effect of NC weight fraction on elastic and shear moduli is fairly the same. The shape factor values more than the medium level do not affect the mechanical properties.

Key words: polymer hybrid composite (PHC), Halpin-Tsai, carbon nanotube (CNT), nanoclay (NC), free vibration, buckling load

2010 MSC Number:

S. AFSHIN, M. H. YAS. Dynamic and buckling analysis of polymer hybrid composite beam with variable thickness. Applied Mathematics and Mechanics (English Edition), 2020, 41(5): 785-804.

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