ELASTIC-PLASTIC STRESS ANALYSIS OF NONHOMOGENEOUS ROTATING SOLID DISCS

Date

2008-09-01

Author

Eraslan, Ahmet Nedim
APATAY, TUNÇ
Gulgec, Mufit

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A computational model is developed for the analysis of elastic and partially plastic stress states in functionally graded (FGM) variable thickness rotating solid disks. The modulus of elasticity, Poisson's ratio, uniaxial yield limit and density of the disk material are assumed to vary radially in any prescribed functional forms. Small deformations and a state of plane stress are presumed. Using the von Mises yield criterion, total deformation theory and a Swift-type nonlinear hardening law, a single nonlinear equation describing elastoplastic behavior of rotating disk is obtained. A shooting technique using Newton iterations with numerically approximated tangents is designed and used for the computer solution of the governing equation. The model is verified by comparing predictions with analytical solutions.

Subject Keywords

Functionally graded material, Rotating disk, Von mises criterion, Nonlinear hardening, Shooting method

URI

https://hdl.handle.net/11511/52847

Collections

Department of Engineering Sciences, Article