Search for: [Abstract = "In this paper, the derivation of expressions for admissible values of strains and stresses for vertex points of layers subjected to tension during tube bending at bending machines is presented. The conditions of the dispersed and located loss of stability of the bent tube were assumed as criteria of instability. The original element of this paper is the extension of the criterion of strain location in a form of possible initiation of a neck or furrow \(introduced by Marciniak for thin plates \[1\]\) to bending thin\- and thick\-walled metal tubes at bending machines."]

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