tensor stress, tensor it is elastic plastic deformations, limiting statuses. 

It is shown, that to limiting statuses it is elastic plastic deformation there correspond extreme and average option values Lode both in space of stress, and in space is elastic plastic deformations. 

1. Kuznetsov, Yevgeniy Evgenyevich Candidate of Phys.&Math., Assoc. Professor, Department of Building, Building Materials and Designs, Tula State University, Tula

2. Matchenko, Ilya Nikolaevich Dr. Sci. Phys. & Math., The senior scientific employee, I. Yakovlev Chuvash State Pedagogical University, Cheboksary

3. Matchenko, Nikolay Mikhaylovich Dr. Sci. Phys. & Math., Professor, Department of Mechanics Plastic Forming, Tula State University, Tula