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Mechanism-based thermomechanical fatigue life prediction of cast iron. Part II: Comparison of model predictions with experiments

: Seifert, T.; Maier, G.; Uihlein, A.; Lang, K.H.; Riedel, H.

Preprint urn:nbn:de:0011-n-1367368 (1.7 MByte PDF)
MD5 Fingerprint: 9b58b078b37a599c96f39290b2ebc694
Created on: 13.10.2012

International journal of fatigue 32 (2010), No.8, pp.1368-1377
ISSN: 0142-1123
Journal Article, Electronic Publication
Fraunhofer IWM ()

In the present paper, predictions of mechanism-based models for cast iron are compared to experimental results obtained for the nodular cast iron EN-GJS-700, the vermicular cast iron EN-GJV-450 and the lamellar cast iron EN-GJL-250. A strategy is proposed to efficiently identify the model parameters based on isothermal experiments. In particular, complex low cycle fatigue (LCF) tests, tension tests and compression tests are used to adjust the time and temperature dependent cyclic plasticity model. The time and temperature dependent fatigue life prediction model is adjusted to LCF tests. For all investigated cast iron materials, good predictions of thermomechanical fatigue (TMF) tests are possible with the models. Additionally, the location of failure and fatigue life of a thermomechanically loaded double-sided notched specimen are predicted with high accuracy.