Harmonic response of carbon nanotube reinforced functionally graded beam by finite element method

This paper examines the harmonic response of carbon nanotube (CNT) reinforced functionally graded beams. Two different varieties of CNT reinforced composite beams are considered. One is of uniform distribution CNT reinforced composite and the other is functionally graded CNT reinforced beam. As the general rule of mixture is not appropriate for such beams, another rule of mixture is applied to obtain material properties. For these beams, CNT efficiency parameter is taken for the size dependent material properties. Finite element models are generated for the beams in the ANSYS environment using the computed material properties. Three different kinds of FG beams, functionally graded CNT beams of X type (FGX-CNT), D type (FGD-CNT) and O type are taken for evaluation and presentation of results. It is found that the FGD-CNT reinforced composite beams have maximum amplitude peak. This maximum peak of rotational motion belongs to FGO-CNT reinforced composite beams and FGO CNT has more stability than the other. The FGX CNT reinforced composite beams have the highest natural frequency with low peak and thereby explaining small hardening behavior. (c)& nbsp;2020 Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of the scientific committee of the International Conference on Advances in Materials Processing & Manufacturing Applications.