Materials 3(1), 434-451, 2010
H.E. Pettermann1, C.O. Huber2,
M.H. Luxner2,3, S. Nogales1,
1Institute of Lightweight Design and Structural
TU Wien, Vienna, Austria
2Austrian Aeronautics Research Network
3Luxner Engiennering, Imst, Austria
The present paper aims at computational simulations of particle reinforced
Metal Matrix Composites as well as parts and specimens made thereof.
An incremental Mori-Tanaka approach with isotropization of the matrix tangent
operator is adopted.
It is extended to account for large strains by means of co-rotational Cauchy
stresses and logarithmic strains and is implemented into Finite Element Method
software as constitutive material law. Periodic unit cell predictions in the
finite strain regime are used to verify the analytical approach with respect to
non-proportional loading scenarios and assumptions concerning finite strain
The response of parts made of Metal Matrix Composites is predicted by a
multiscale approach based on these two micromechanical methods.
Results for the mesoscopic stress and strain fields as well as the microfields
are presented to demonstrate to capabilities of the developed methods.