Interactions between damage and behavior
Damage and ductility in forming

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M3032 V1 Article

Interactions between damage and behavior


Damage and ductility in forming

Authors : Frank MONTHEILLET, Laurent BRIOTTET

Publication date: June 10, 2009, Review date: March 6, 2017 | Lire en français

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5. Interactions between damage and behavior

When damage occurs, the material becomes porous and therefore compressible. Two approaches are generally proposed to account for changes in its mechanical behavior:

  • introduction of a macroscopic damage variable ;

  • the use of specific plasticity criteria.

5.1 Macroscopic damage variable

  • The stress exerted on a surface S subjected to a perpendicular force F is expressed by the relation :

    σ=F/S( 45 )

    ...

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