Cyclic plastic response and fatigue life in symmetric and asymmetric cyclic loading

0370003 - ÚFM 2012 RIV NL eng J - Journal Article
Polák, Jaroslav - Petrenec, Martin - Kruml, Tomáš - Chlupová, Alice
Cyclic plastic response and fatigue life in symmetric and asymmetric cyclic loading.
Procedia Engineering. 10 2011, - (2011), 568–577. E-ISSN 1877-7058.
[11th International Conference on the Mechanical Behavior of Materials. Lake Como, 06.06.2001-09.06.2011]
R&D Projects: GA ČR GAP108/10/2371
Institutional research plan: CEZ:AV0Z20410507
Keywords : hysteresis loop * mean stress * fatigue life
Subject RIV: JL - Materials Fatigue, Friction Mechanics

The response of materials to cyclic loading using different loading conditions is analyzed. Hysteresis loops of austenitic steel cycled in symmetric and asymmetric strain- and stress controlled loading are analyzed to evaluate the contribution of effective stress and probability distribution of internal critical stresses. The austenitic-ferritic duplex steel is cycled with various positive mean stresses and cyclic stress-strain response, cyclic creep rates, resulting dislocation structures and fatigue life are evaluated. The effect of the mean stress on cyclic plasticity and fatigue life is discussed.
Permanent Link: http://hdl.handle.net/11104/0203927