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Elastic–plastic buckling of annular circular plate with linear material hardening
Author(s) -
Bremec B.,
Kosel F.,
Petrišič J.
Publication year - 2003
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.200310077
Subject(s) - buckling , materials science , hardening (computing) , plasticity , strain hardening exponent , mechanics , structural engineering , critical load , deformation (meteorology) , composite material , physics , engineering , layer (electronics)
The contribution treats the buckling problem of a circular annular plate where the unstable state and the buckling process occurs when the stress state in the most loaded points of the plate is already in the elastic–plastic region. It is supposed that the plate buckles axisymmetrically (m = 0) or nonaxisymmetrically with m > 0, m ∈ ℕ waves in the circumferential direction. Using the equilibrium method, the critical buckling loads are calculated. The results show the influence of the material hardening coefficient 0 ≤ f ≤ 1 on the buckling load. The comparison between calculations with the consideration of flow and deformation theory of plasticity is given.