Phenomenological modeling of the stress-strain behaivor of ceramic matrix composites with application to stress analysis
Conference
·
OSTI ID:175299
- Harvard Univ., Cambridge, MA (United States)
A plane stress constitutive relation is developed for laminate composites undergoing matrix cracking and therefore displaying significant nonlinear stress-strain behavior. The constitutive relation is similar in some respects to a phenomenological theory of plasticity in that it is fit to data from uniaxial tests. The constitutive equations are specialized to brittle matrix composites (especially CMCs) in the form of cross-piles and quasi-isotropic laminates. Several problems involving stress redistribution at holes and notches due to nonlinear stress-strain behavior are investigated with the aid of the constitutive law.
- OSTI ID:
- 175299
- Report Number(s):
- CONF-950686--
- Country of Publication:
- United States
- Language:
- English
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