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Effective strain rate sensitivity of two phase materials

✍ Scribed by László S. Tóth; Alain Molinari; Olivier Bouaziz

Publisher
Elsevier Science
Year
2009
Tongue
English
Weight
452 KB
Volume
524
Category
Article
ISSN
0921-5093

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✦ Synopsis

Analytical expressions are derived for the effective strain rate sensitivity exponent of a two phase material when the behavior of both phases and of the composite itself can be described by power law relations between the stress and strain rates. The material is assumed to be plastically isotropic and obey to von-Mises type creep behavior. Two types of boundary conditions are considered: strain or stresscontrolled. The obtained formulas are applied to a geological composite material (mixture of camphor and octachloropropane) with the help of different simple models of two phase composites.

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