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Mechanical characterization of anisotropic elasto-plastic materials by indentation curves only

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Abstract

Anisotropy, usually orthotropy, arises in structural materials, particularly metals, due to production processes like laminations and concerns primarily parameters which govern the plastic behavior. Identification of such parameters is investigated here by a novel approach with the following features: experimental data provided by indentation curves only (not by imprint geometry); indenter shape with elliptical cross-section derived from classical conical or spherical shape and optimized by sensitivity analyses; indentation test repeated in near places after indenter rotation; deterministic inverse analyses centered on discrepancy function minimization and made computationally economical by an ‘a priori’ model reduction procedure.

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Acknowledgments

Thanks are expressed by the authors to Tetrapak Company, Modena Factory, for support to Dr. V. Buljak during his research activity in Milan.

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Authors and Affiliations

  1. Department of Strength of Materials, University of Belgrade Faculty of Mechanical Engineering, Kraljice Marije 16, Belgrade, Serbia

    V. Buljak

  2. Architecture, Built Environment and Construction Engineering Department, Politecnico di Milano (Technical University), piazza Leonardo da Vinci 32, 20133, Milan, Italy

    M. Bocciarelli

  3. Department of Structural Engineering, Politecnico di Milano (Technical University), piazza Leonardo da Vinci 32, 20133, Milan, Italy

    G. Maier

Authors
  1. V. Buljak
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  2. M. Bocciarelli
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  3. G. Maier
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Corresponding author

Correspondence to M. Bocciarelli.

Additional information

This paper is dedicated to Professor Piotr Perzyna, outstanding scientist in solid mechanics, who passed away last year.

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Buljak, V., Bocciarelli, M. & Maier, G. Mechanical characterization of anisotropic elasto-plastic materials by indentation curves only. Meccanica 49, 1587–1599 (2014). https://doi.org/10.1007/s11012-014-9940-y

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  • DOI: https://doi.org/10.1007/s11012-014-9940-y

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