An Influence of Step Cyclic Loading due to Torsion on Tensile Curve Variation

Zbigniew L. Kowalewski; Tadeusz Szymczak

doi:10.4028/www.scientific.net/KEM.535-536.181

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 535-536An Influence of Step Cyclic Loading due to Torsion...

An Influence of Step Cyclic Loading due to Torsion on Tensile Curve Variation

Abstract:

The paper presents experimental results of tests carried out at room temperature on power engineering steel: 10H2M (11CrMo9-10) using thin-walled tubular specimens under biaxial stress state. The loading programme comprised different types of deformation, i.e. monotonic tension and cyclic torsion in the form of symmetric or asymmetric step-increasing strain amplitude. The main task of the paper was focused on investigation of an influence of the cyclic loading parameters on tensile curve variations. The magnitudes of axial strain and cyclic shear strain amplitude were small and did not exceed 1%. An analysis of the results showed a significant reduction of the axial stress (even equal 90% for the torsional amplitude ±0.8%, in both cases of cyclic loading). An influence of torsion frequency on the tensile stress curve was discovered within the range from 0.005Hz to 0.5Hz.

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Periodical:

Key Engineering Materials (Volumes 535-536)

Pages:

181-184

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.535-536.181

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Online since:

January 2013

Authors:

Zbigniew L. Kowalewski, Tadeusz Szymczak

Keywords:

Cyclic Loading, Hysteresis Loop, Stress Variation, Tensile Characteristic

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References

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