| Abstrakt: |
The plastic deformation of a uniform sheet workpiece loaded with normal stresses along the edges is considered. Critical deformations corresponding to two states of equilibrium bifurcation are determined. The first state corresponds to the formation of a neck, the second, to the appearance of a band of a concentrated necking. The deformations depend on the parameters of the stress or strain states and the mechanical characteristics of the sheet metal. A comparison of the obtained theoretical results with experimental data is carried out, and their good agreement is shown. [ABSTRACT FROM AUTHOR] |
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