Tests in tension-torsion conditions with descending sections of strain curve construction
The paper is devoted to theoretical and experimental investigation of materials behavior onpostcritical deformation stage (strain softening). Tests results, which confirm theoretical justification ofspecimen configuration impact on the possibility of creating descending sections of strain curve, are given. It isshown that, with sufficient stiffness of loading system, equilibrium postcritical deformation of materials ispossible. It is confirmed in uniaxial tension tests with unloading on postcritical deformation stage. Test resultson tension with torsion of thin-walled tubular specimens in strain softening conditions are adduced.