Determination of the Plastic Strain by Spherical Indentation of Uniaxially Deformed Sheet Metals

Mohamad Idriss; Olivier Bartier; Gérard Mauvoisin; Charbel Moussa; Eddie Gazo Hanna; Xavier Hernot

doi:10.4028/www.scientific.net/KEM.651-653.950

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 651-653Determination of the Plastic Strain by Spherical...

Determination of the Plastic Strain by Spherical Indentation of Uniaxially Deformed Sheet Metals

Abstract:

This work consists of determining the plastic strain value undergone by a material during a forming process using the instrumented indentation technique (IIT). A deep drawing steel DC01 is characterized using tensile, shear and indentation tests. The plastic strain value undergone by this steel during uniaxial tensile tests is determined by indentation. The results show that, the identification from IIT doesn’t lead to an accurate value of the plastic strain if the assumption that the hardening law follows Hollomon law is used. By using a F.E. method, it is shown that using a Voce hardening law improves significantly the identification of the hardening law of a pre-deformed material. Using this type of hardening law coupled to a methodology based on the IIT leads to an accurate determination of the hardening law of a pre-deformed material. Consequently, this will allow determining the plastic strain value and the springback elastic strain value of a material after a mechanical forming operation.

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Periodical:

Key Engineering Materials (Volumes 651-653)

Pages:

950-956

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.651-653.950

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Online since:

July 2015

Authors:

Mohamad Idriss*, Olivier Bartier, Gérard Mauvoisin, Charbel Moussa, Eddie Gazo Hanna, Xavier Hernot

Keywords:

Deformed Sheet Metals, Inverse Analysis, Plastic Strain, Spherical Indentation

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