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A new scheme for computational modeling of conical indentation in plastically graded materials

Published online by Cambridge University Press:  03 March 2011

Yan Ping Cao  and
Jian Lu
Yan Ping Cao
Affiliation:
LASMIS, Universite de Technologie de Troyes, 10010 Troyes, France
Jian Lu*
Affiliation:
LASMIS, Universite de Technologie de Troyes, 10010 Troyes, France
*
a) Address all correspondence to this author. e-mail: Jian.Lu@utt.fr
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Abstract

In this paper, a new scheme has been proposed for the computational modeling of conical indentation in plastically graded materials. Based on the new scheme and the work of Dao et al. [Acta Mater.49, 3899 (2001)], and taking the example of conical indentation with an indenter whose tip apex angle is θ = 70.3°, an analytical expression to predict the loading P - h curve for the indentation of plastically graded materials has been presented. A reverse algorithm has further been established to determine the plastic properties of a plastically graded surface. The existence, uniqueness, and stability of the solution to the inverse problem have been systematically investigated. The current work can be applied to the evaluation or optimization of various plastically graded surfaces.

Keywords

MicroindentationNanoindentationStress/strain relationship
Type
Articles
Information
Journal of Materials Research , Volume 19 , Issue 6 , June 2004 , pp. 1703 - 1716
Copyright
Copyright © Materials Research Society 2004

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