Theory of inclusions in the elastic and elastic-plastic deformation of composite materials
Thesis/Dissertation
·
OSTI ID:7203582
The overall elastic and elastoplastic behavior of two and multi-phase composites reinforced (or weakened) with aligned and randomly oriented spheroidal inclusions are studied. Emphasis is placed on the influence of inclusion shape and volume concentration with no restriction placed on the elastic moduli of inclusions which may be totally rigid or become voids. In the elastic case, the exact solutions and bounds of the elastic moduli for thickly coated particle and fiber-reinforced composites are first derived. The theory is then extended to a polycrystal with transversely isotropic grains, where the elastic constants with equiaxial grains and their grain-shape dependence are established. The nonlinear elastoplastic behavior of a two-phase composite is studied for a system where elastic, randomly oriented spheroidal inclusions are homogeneously embedded in the ductile matrix. It is found that more so than the elastic behavior, the overall elastoplastic response of a two-phase composite is quite sensitive to the inclusion shape, with discs providing the most strengthening effect.
- Research Organization:
- Rutgers--the State Univ., New Brunswick, NJ (United States)
- OSTI ID:
- 7203582
- Country of Publication:
- United States
- Language:
- English
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