This paper analyzes the results of the theoritical studies of the spirally re1nforced compos1te mater1als oota1ned by using a new model of calculation of the behavior of the material unter two types of conditions:

  1. auxiliary layer and inner part of the structural element are Isotropic.

  2. auxiliary and inner part of layer is orthotropic the element is transversally isotropic.

The paper gives on est1mat1on of the influence of the layer properties on the compos1te" s state of strain as well as the calculation of carbon reinforced epoxy-bended plastic conducted for the case of planar state of stress by specially developed computer programme. The requirements to be satisfied by the composite materials have to correspond to the types of the pasts of constructions for Which they are produced. It 1S not rear that such requirements demand new types of composites for Which theoretical and experimental studies would have to be conducted in order to obtain materials with optimal caracteristiques. This paper considers the influence of auxiliary layer composite materials created on the basis of spirally wound reinforcing filling agents. Elementary structural unit of spirally reinforced material is obtained by disposition on the surface of the main reinforcing filling agent an intermediate layer formed of fibrous filaments. dimensions of winding, and characteristics of which differ from those of the main filling argent. Microstructural studies of the composite have assessed as in works [8.9] that the disposition of structural units in material is hexgonal and the main reinforcing filling agent (zone 2.,) is an infinite cylinder of a circular cross section the generating line of which is perpendicular to the plane xOy the lntermediate layer (zone 1) has a form of a void cylinder and a matrix (zone 2) represents an lsotropic body.

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