An energetic approach in thermomechanical fatigue for silicon molybdenum cast iron

• DOI: 10.1179/mht.2000.17.3.001
• Publication Date: 2014-10-14T12:04:34Z
• Authors: E. Charkaluk; A. Constantinescu
• Keywords: 0203 mechanical engineering; thermomechanical fatigue; [SPI.MECA.MEMA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph]; silicon molybdenum; 02 engineering and technology; 620; cast iron

The purpose of this paper is to define a low cycle fatigue criterion in order to predict the failure of engineering structures. The major problem in defining a predictive fatigue criterion is that it should be applicable for structures submitted to complex multiaxial thermo-mechanical loadings but should be identifiable from simple experiments on specimens. After a short critical review of the principal criteria used in low cycle fatigue it will be shown that the dissipated energy per cycle permits a correlation of isothermal and anisothermal results obtained on silicon molybdenum cast iron in the case of specimens and also on structures.