Nonlinear deformation and strength of stochastic composites with a damaged matrix

Journal Article · Sun Mar 01 04:00:00 EST 1992 · Mechanics of Composite Materials

DOI:https://doi.org/10.1007/BF00613474· OSTI ID:377035

Maslov, B P; Bugai, S N

In the present study, the authors propose a method of calculating the stiffness and strength characteristics of stochastic composites with a nonlinear matrix weakened by spheroidal pores or disk-shaped cracks. They will examine three-component composites reinforced by continuous anisotropic fibers and randomly oriented short fibers of spheroidal form. They use a model which makes it possible to consider the closeness of the reinforcing elements to one another for different types of reinforcement. A microstructural analysis of the stresses in the composites yields a macroscopic criterion of strength for a three-component composite with a nonlinear matrix. The procedures that are developed are realized in the form of an application package which is used as a component part of an automated design system for structures made of composites. Let the composite consist of a matrix enforced by randomly oriented inclusions of spherical form. The authors assume that the type of reinforcement is such as to ensure that the elastic properties are statistically uniform within a certain representative volume V. Thus, given sufficiently smoothly external loads, they will make use of the property of ergodicity of the random tensor fields of the elastic moduli, stresses, and strains.

• Sponsoring Organization: USDOE
• OSTI ID: 377035
• Journal Information: Mechanics of Composite Materials, Journal Name: Mechanics of Composite Materials Journal Issue: 5 Vol. 27; ISSN 0191-5665; ISSN MCMAD7
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CALCULATION METHODS
COMPOSITE MATERIALS
FLEXURAL STRENGTH
MICROSTRUCTURE
NONLINEAR PROBLEMS