Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 315, Issue 1-2, Pages 11-20Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/S0921-5093(01)01212-6
Keywords
short fibers; spheroidal inclusion; Mori-Tanaka theory; effective moduli
Ask authors/readers for more resources
This investigation presents an approach to obtain the effective moduli of both two- and three-dimensional, randomly oriented composites in terms of the shape and volume fraction of fibers. The composite fiber is treated as an spheroidal inclusion that enables its geometry ranging from short fiber to continuous fiber. To simulate spatial fiber orientation, a probability density function controlled by two Euler angles is introduced. Furthermore, based upon the Mori-Tanaka mean-field theory to account for the interaction between the fibers and matrix, an analytical approach is developed to assess the effective moduli of composites containing randomly oriented short fibers. In particular, when the fibers are uniformly distributed over a given region, closed-form solutions for the effective moduli of a two-phase composite are obtained for four special distributions of fiber orientations. Both two- and three-dimensional random orientations, resulting respectively in a transversely isotropic and a fully isotropic composite, are analyzed explicitly. Numerical examples have been given for an E-Glass/Epoxy composite. Analysis results indicate that the effective moduli are strongly affected by the volume fraction, the aspect ratio, and the orientation of fibers. (C) 2001 Elsevier Science B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available