Steel and Composite Structures

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Exact thermoelastoplastic analysis of FGM rotating hollow disks in a linear elastic-fully plastic condition

  • Nadia Alavi (Department of Mechanical Engineering, Yasouj University) ;
  • Mohammad Zamani Nejad (Department of Mechanical Engineering, Yasouj University) ;
  • Amin Hadi (Cellular and Molecular Research Center, Yasuj University of Medical Sciences) ;
  • Anahita Nikeghbalyan (Department of Mechanical Engineering, Yasouj University)
  • Received : 2023.03.15
  • Accepted : 2024.04.03
  • Published : 2024.05.25
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Abstract

In the present study, thermoelsatoplastic stresses and displacement for rotating hollow disks made of functionally graded materials (FGMs) has been investigated. The linear elastic-fully plastic condition is considered. The material properties except Poisson's ratio are assumed to vary in the radial direction as a power-law function. The heat conduction equation for the one-dimensional problem in cylindrical coordinates is used to obtain temperature distribution in the disk. The plastic model is based on the Tresca yield criterion and its associated flow rules under the assumption of perfectly plastic material behavior. Exact solutions of field equations for elastic and plastic deformations are obtained. It is shown that the elastoplastic response of the functionally graded (FG) disk is affected notably by the radial variation of material properties. It is also shown that, depending on material properties and disk dimensions, different modes of plastic deformation may occur.

Keywords

References

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