Title of article
Studying buckling of composite rods made of hybrid carbon fiber/carbon nanotube-reinforced polyimide using multi-scale FEM
Author/Authors
Ahmadi, Masoud Department of Mechanical Engineering - University of Guilan - Rasht - Iran , Ansari, Reza Department of Mechanical Engineering - University of Guilan - Rasht - Iran , Rouhi, Hessam Department of Engineering Science - Faculty of Technology and Engineering - East of Guilan - University of Guilan - P.C - Rudsar-Vajargah - Iran
Pages
10
From page
252
To page
261
Abstract
In this paper, the buckling behavior of rods made of carbon fiber/carbon nanotube-reinforced polyimide (CF/CNT-RP) under the action of axial load is investigated based on a multiscale finite element method. A dual-step procedure is first adopted to couple the influences of micro- and nano-scale in order to obtain the equivalent elastic properties of CF/CNT-RP for various volume fractions of CF and CNT. The interphase effect between CNTs and the polymer matrix is taken into consideration. Also, dispersion of CF/CNT into the polymer matrix is assumed to be random. Then, rods with square and circular cross sections are considered whose stability characteristics are analyzed. The finite element modeling is performed using two models including a 3D brick model and a 2D beam model. Selected numerical results are given to study the effects of volume fraction of CNT/CF, interphase and geometrical properties on the axial buckling response of multiscale composite rods.
Keywords
Multiscale composite rod , Hybrid carbon nanotube/carbon fiber reinforcement , Polyimide , buckling , Finite Element Method
Journal title
Scientia Iranica(Transactions B:Mechanical Engineering)
Serial Year
2020
Record number
2554306
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