Yield criterion for a perforated sheet with a uniform triangular pattern of round holes and a low ligament ratio
Resource
Journal of Materials Processing Technology 103: 353-361
Journal
Journal of Materials
Journal Volume
103
Journal Issue
3
Pages
Processin-g
Date Issued
2000
Date
2000
Author(s)
Lee, Yi-Che
Abstract
The plastic behavior of a perforated sheet with round holes in a triangular pattern depends largely on the hole size of the perforated sheet. This study investigates the plastic behavior of perforated sheets with low ligament ratios. A yield criterion for the perforated sheets is also proposed in terms of apparent stresses by employing the equivalent-continuum approach. The effectiveness of the proposed yield criterion is then demonstrated by comparing the predicted values of apparent yield stresses and apparent strain ratios with results obtained from finite-element analysis and experiment.
Other Subjects
Continuum mechanics; Finite element method; Plasticity; Yield stress; Equivalent continuum; Ligament ratio; Perforated sheets; Perforating
Type
journal article
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