For the calculation of a rotating disc, having a uniform
thickness, made of functionally graded materials, the finite element method is
used based on the concepts of multilayer disc and equivalent material. These
concepts are available for analytical calculus as well. The multi-layered disc
concept considers the disc made of several layers, and the equivalent material
concept considers the disc material made of homogeneous and isotropic material.
This material has fictitious properties that ensure the same behavior as that
of the functionally graded material. The influence of Poisson's ratio can be
determined and it is illustrated by some comparative results. The development
of the calculus, the validation of the models and the analysis of the results
are based on the numerical calculus using the finite element method. The models
used, are based on the existence of the axial-symmetric plane. So, we can use
2D or 3D simplified models, with several variants regarding the fineness of the
mesh. The results of the study, the models and concepts used are useful to
specialists and designers of structures of this type, they have a high degree
of generality and present openings for the use of other calculation methods.
Author(s) Details
Vasile Nastasescu
Military Technical Academy “Ferdinand I”, Romania.
Antonela Toma
National University of Sicence and Technology Politehnica
Bucharest, Romania.
Please see the link:- https://doi.org/10.9734/bpi/strufp/v8/1244
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