Open AccessVibration characteristics of rotating functionally graded porous beams reinforced by graphene platelets
Author(s) -
Chu Thanh Binh,
Trần Hữu Quốc,
Huan Thanh Duong,
Ho Thi Hien
Publication year - 2021
Publication title -
khoa học công nghệ xây dựng
Language(s) - English
Resource type - Journals
eISSN - 2734-9489
pISSN - 2615-9058
DOI - 10.31814/stce.huce(nuce)2021-15(4)-03
Subject(s) - porosity , materials science , vibration , timoshenko beam theory , graphene , beam (structure) , composite material , radius , dispersion relation , material properties , dispersion (optics) , ritz method , mechanics , structural engineering , physics , acoustics , optics , engineering , nanotechnology , computer security , computer science
This work aims to study the vibration characteristics of the rotating functionally graded porous beam reinforced by graphene platelets. The beam is mounted and rotated around a hub with a constant velocity. The material properties vary along the thickness direction with two types of porosity distributions and two dispersion patterns of graphene platelet. The equations of motion based on the Timoshenko beam theory are obtained and solved using the Chebyshev-Ritz method. The effects of the parameters such as hub radius, rotating speed, weight fraction, porosity distribution, porosity coefficient, and dispersion model are presented. The present method results are also compared with numerical results available in the literature.