Modell.Simul.Mater.Sci.Engng. 1, 649-671, 1993


NUMERICAL INVESTIGATION OF
MICROPLASTICITY EFFECTS IN UNIDIRECTIONAL
LONG FIBER REINFORCED METAL MATRIX COMPOSITES

H.J. Böhm

Institute of Lightweight Structures and Aerospace Engineering,
TU Wien, Vienna, Austria


Abstract - The influence of microplasticity effects on the overall nonlinear behavior of unidirectional continuously reinforced metal matrix composites is investigated by a finite element based micromechanics approach using a periodically repeating unit cell. The response under mechanical and thermal loading is modeled, the influence of thermal residual stresses is considered, and shakedown phenomena are studied. The predictions from the numerical computations are compared with experimental data on continuously reinforced boron-aluminum composites and with analytical micromechanics results obtained from mean field approaches.


(hjb,960626)