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A new method to determine the elastoplastic properties(2012)
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A new method to determine the elastoplastic properties of ductile
materials by conical indentation
materials by conical indentation
Based on load-displacement curves, indentation is widely used to extract the elastoplastic properties of materials. It is generally believed that such a measure is non-unique and a full stress-strain curve cannot be obtained using plural sharp and deep spherical indenters. In this paper we show that by introducing an additional dimensionless function of A/A (the ratio of residual area to the area of an indenter profile) in the reverse analysis, the elastoplastic properties of several unknown materials that exhibit visually indistinguishable load-displacement curves can be uniquely determined with a sharp indentation.
https://wap.sciencenet.cn/blog-451819-595257.html
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