Elastoplastic analysis of nonlinearly hardening variable thickness annular disks under external pressure

Date

2005-05-01

Author

Eraslan, Ahmet Nedim
Orcan, Y
Guven, U

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Based on von Mises' yield criterion, deformation theory of plasticity and Swift's hardening law, elasto-plastic deformation of variable thickness annular disks subjected to external pressure is studied. A nonlinear shooting method using Newton's iterations with numerically approximated tangent is designed for the solution of the problem. Considering a thickness profile in the form of a general parabolic function, the condition of occurrence of plastic deformation at the inner and outer edges of the annular disk is investigated. A critical disk profile is determined and the corresponding elastic-plastic stresses as well as the residual stress distribution upon removal of the applied pressure are computed and discussed.

Subject Keywords

Mechanical Engineering, General Materials Science, Mechanics of Materials, Civil and Structural Engineering, Condensed Matter Physics

URI

https://hdl.handle.net/11511/46244

Collections

Department of Engineering Sciences, Article