The strength of a composite formed by longitudinal-transverse stacking of orthotropic layers with a crack at the boundary

Journal Article · Sun May 01 04:00:00 EDT 1994 · International Applied Mechanics

OSTI ID:114675

Guz, I A ^[1]

---

1. Academy of Sciences of Ukraine, Kiev (Russian Federation)

Questions regarding the strength of layered composite materials during compression along the layers taking into account the presence of various imperfections of interphase adhesion (cracks, adhesive gaps, exfoliations, etc.) were considered. In these publications the investigation was first carried out in an explicit formulation, using the model of a piece-wise-homogeneous medium and the relations of three-dimensional linearized theory of a strength of deformable bodies (TLTRDB). Guz` classified the problems within the framework of an explicit formulation (in the sense indicated above) as a function of the relation between the lengths of the cracks and the thickness of the layers as applied to an arbitrary layered structure with an arbitrary number of cracks. Here three types of crack were distinguished: the microcrack, the structural crack, and the macrocrack. Guz`examined in detail the strength of a microcrack lying on the boundary between isotropic linearly-elastic compressed layers, for which numerical results were obtained. The present article investigates, on the basis of the results, the strength of a composite material formed of longitudinal-transverse stacking of orthotropic layers with a microcrack at their boundary.

• OSTI ID: 114675
• Journal Information: International Applied Mechanics, Journal Name: International Applied Mechanics Journal Issue: 11 Vol. 29; ISSN IAMEEU; ISSN 1063-7095
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COMPOSITE MATERIALS
COMPRESSION
CRACK PROPAGATION
DEFORMATION
FAILURES
MATHEMATICAL MODELS