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Torsion tests allow studying the rheological properties of materials over a wide range
of strain and strain rate values as well as temperature. A key moment in construction of hardening
curves is the interpretation of experimental data, which are usually the torque - angle of twist
curves. However, there are a number of independent methods to obtain interpretation of
experimental data. In addition, there is no single approach to determining the degree of
equivalent strain in torsion test. The aim of this paper is to review existing hardening curves
definition methods in torsion test and to examine them with the use of finite element modelling.
Keywords: material testing; torsion; rheological properties; strain resistance; equivalent strain. |
full paper (pdf, 752 Kb)