Effective Elastic and Strength Properties and Stress Field in Elastic Random Structure Matrix Composites
Abstract
Linearly thermoelastic composite media are treated, which consist of a homogeneous matrix containing a statistically homogeneous random set of ellipsoidal uncoated or coated inclusions. Effective properties (such as compliance, thermal expansion, stored energy) as well as both first and second statistical moments of stresses in the components are estimated for the general case of nonhomogeneity of the thermoelastic inclusion properties. The micromechanical approach is based on Green’s function techniques as well as on the generalization of the “multiparticle effective field” method (MEFM), previously proposed for the estimation of stress field averages in the components. The application of the theory is demonstrated by calculating overall strength surfaces of composite materials. The influence of the coating is analyzed by the use of both the assumption of homogeneity of the stress field in the inclusion core and of the thin-layer hypothesis.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Nov 15, 1998
- Source ID
- 10.1115/imece1998-1209
Entities
People
- Valeriy A. Buryachenko
Organizations
- Air Force Research Laboratory