anisotropy, torsion, limit condition, field of characteristics, lines of a gap, tension, core.

Basic elements of designs in some branches of the modern equipment are uniform and non-uniform anisotropic cores. At the same time in engineering practice the designs made of the composite materials having anisotropy and heterogeneity are widely adopted. The new composite materials created with an ipolzovaniye of technological ways provide reliability of designs and reduce себестомоисть products. The relevance of article is caused by the fact that many elements of construction cars and mechanisms work both for a bend, and for torsion. Work is devoted to the solution of some problems of torsion of anisotropic uniform and non-uniform prismatic cores. In article the intense deformed condition of cores is defined and lines of a rupture of tension are found. The received results can be applied when calculating of the bearing ability of designs and allow to consider influence of anisotropy when determining limit efforts at torsion.

Dereviannih Evgeniya Anatolyevna

e-mail: jane-evgeniya@yandex.ru, Ph. D., Assoc. Professor, Chuvash State Agricultural Academy, Cheboksary, Russia.

Maksimov Aleksey Nikolaevich

e-mail: alexei.maksimow@yandex.ru, Ph. D., Assoc. Professor, Chuvash State Agricultural Academy, Cheboksary, Russia.

Mitrofanova Tatjana Valeryevna

e-mail: mitrofanova_tv@mail.ru, Ph. D., I. N. Ulyanov Chuvash State University, Cheboksary, Russia.