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Numerical damage and life prediction of automotive castingtooling due to low-cycle thermal fatigue*

Published online by Cambridge University Press:  23 September 2011

D. Toumbas  and
N. Dufaure
D. Toumbas
Affiliation:
Toumbas Engineering, 91 rue du Faubourg Saint Honoré, 75008 Paris, France. e-mail: [email protected]
N. Dufaure
Affiliation:
PSA – Peugeot Citroen, 18 rue des Fauvelles, 92250 La Garenne Colombes, France. e-mail: [email protected]
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Abstract

The economic challenge for PSA regarding the maintenance of their mould foundry park isto predict and improve its lifespan in preventing any risk of initiation and propagationof cracks in thermal fatigue. A method for assessing the number of cycles of castingtooling thermal fatigue used by PSA was developed using the criterion of Fatemi-Socie [A.Fatemi, D. Socie, Fatigue Fract. Engng.Mater. Struct. 11 (1988) 149-165, D.F.Socie, multiaxial fatigue damage models, ASME 109 (1987)293-298], associated with a shear failure mode, which predicts the thermal fatigue damageby assessing stress and strain tensors on different facets around any material point.

Keywords

Fatiguedamagethermal fatiguecritical facetstoolingmoldingnumber of cyclesfailure modesheardeformation tensorsmultiple cracksfatigue life predictionfinite elementsFatigueendommagementfatigue thermiqueplan critiqueoutillagefonderienombre de cyclesmode de rupturecisaillementdurée de vietenseursdéformationsfissurationéléments-finis
Type
Research Article
Information
Metallurgical Research & Technology , Volume 108 , Issue 2 , 2011 , pp. 109 - 112
Copyright
© EDP Sciences, 2011

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References

M. Salem, V. Velay, M. Cheikh, G. Dour, P. Lamesle, F. Rézai-Aria, Fatigue Life Modelling of Hot Forming Tools, Tooling conference 09, Las Vegas
Fatemi, A., Socie, D., Fatigue Fract. Engng. Mater. Struct. 11 (1988) 149-165
F, Socie D, multiaxial fatigue damage models, ASME 109 (1987) 293-298 Google Scholar
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