Physical-Mechanical Model of Fibrous Polymerized Bar Deformation at the Neck Zone

In the paper the author suggests a model of mechanical deformation of a polymerized bar made of fibres in the neck with regard to forces interacting with a matrix. In the paper, the author suggests an experimental-theoretical method that allows one to define the character of deformation non-homogeneity in the neck area. In particular, analytic dependence of mechanical properties of the material on longitudinal coordinate of the sample is established. Numerical comparison of theoretical results with experimental ones is given.