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- Title
Deformation and long-term damage of fibrous materials with the stress-rupture microstrength of the matrix described by a fractional-power function.
- Authors
Khoroshun, L. P.; Shikula, E. N.
- Abstract
The theory of long-term damage is generalized to unidirectional fibrous composites. The damage of the matrix is modeled by randomly dispersed micropores. The damage criterion for a microvolume is characterized by its stress-rupture strength. It is determined by the dependence of the time to brittle failure on the difference between the equivalent stress and its limit, which is the ultimate strength, according to the Huber–Mises criterion, and assumed to be a random function of coordinates. An equation of damage (porosity) balance in the matrix at an arbitrary time is formulated. Algorithms of calculating the time dependence of microdamage and macrostresses or macrostrains are developed and corresponding curves are plotted in the case of stress-rupture microstrength described by a fractional power function
- Subjects
FIBROUS composites; MATRICES (Mathematics); ALGORITHMS; FRACTIONAL powers; COMPOSITE materials
- Publication
International Applied Mechanics, 2009, Vol 45, Issue 11, p1196
- ISSN
1063-7095
- Publication type
Article
- DOI
10.1007/s10778-010-0259-7