Integrated Thermomechanical Characterization of Metals Using the Virtual Fields Method

Marco Rossi; Attilio Lattanzi; Luca Morichelli

doi:10.4028/p-t8ksaq

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 926Integrated Thermomechanical Characterization of...

Integrated Thermomechanical Characterization of Metals Using the Virtual Fields Method

Abstract:

In this paper, the possibility of characterizing the thermomechanical behavior of metals using the virtual fields method (VFM) and suitable specimens with heterogeneous strain and temperature fields was demonstrated using simulated experiments. The used geometry is a double-notched tensile test with a Gaussian distribution of temperature over the surface. The chosen constitutive model is the Johnson-Cook hardening law coupled with the Hill48 anisotropic yield criterion. First the VFM strategy and the simulated experiments are described. Then the results are presented showing three case studies, (i) only the effect of the temperature is identified, (ii) the whole set of constitutive parameters is identified at the same time, (iii) a two-step identification is performed. The potentiality of the method as well as the main problems are discussed extensively.

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Periodical:

Key Engineering Materials (Volume 926)

Pages:

2222-2227

DOI:

https://doi.org/10.4028/p-t8ksaq

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Online since:

July 2022

Authors:

Marco Rossi*, Attilio Lattanzi, Luca Morichelli

Keywords:

Double Notched Specimen, Plasticity, Thermomechanical Properties, Virtual Fields Method

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References

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