Actual Problems in Machine Building. Vol. 11. N 1-2. 2024 Innovative Technologies in Mechanical Engineering ____________________________________________________________________ 14 DETERMINATION OF STRESS-STRAIN STATE OF A CYLINDRICAL WORKPIECE IN RESULT OF STRAIGHTENING IN A LOCAL AREA Zaides S.A., D.Sc. (Engineering), Professor, e-mail: zsa@istu.edu Bui M.D., Post-graduate Student, e-mail: manhdungbuik52@gmail.com Irkutsk National Research Technical University, 83 Lermontova st., Irkutsk, 664074, Russian Federation Abstract A variety of non-rigid cylindrical parts such as shafts and axles are used in the production of transport, agricultural, earth-moving and other machines. During manufacture, repair, operation, and in some cases during storage, such parts change its geometric shape and dimensions, that is, it becomes bent. Therefore, in practice, repeated straightening operations are used to achieve the correct geometric shape of machine parts. The purpose of the study is that, using computer modeling software Ansys workbench 19.2, a finite element model of the straightening process is built and the stress-strain state is determined in a limited area of the cylindrical workpiece to evaluate the quality of straightening, process parameters and geometric distortion of the cross section of the workpiece. Keywords Radial force, degree of relative compression, stress-strain state, stress intensity, elastoplastic deformation, straightening, flat plates
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