A variable amplitude computational fatigue life prediction method was developed for use with welded and/or non-welded components for use with the ground vehicle industry. The method is principally applicable to the pre-prototype and prototype iteration/optimization design stage. For welded components, the method incorporates the hot-spot stress approach developed by the European community for off-shore structures. For non-welded notched components, the method incorporates the local notch strain approach. Finite element stress-strain analysis using the ANSYS program combined with dynamic simulation utilizing the DADS program transforms a vehicle wheel input, in the form of a terrain surface description, to the principal hot spot stress or nominal principal strain at each node of interest as a function of time. Rainflow counting and linear damage accumulation along with specific material or weld classification properties are incorporated.
Computational fatigue life prediction of welded and non-welded ground vehicle components
Rechnergestuetzte Lebensdauervorhersage fuer geschweisste und nichtgeschweisste Teile von Kraftfahrzeugen
SAE-Papers ; Oct ; 1-13
1987
13 Seiten, 16 Bilder, 2 Tabellen, 35 Quellen
Conference paper
English
Computational Fatigue Life Prediction of Welded and Non-welded Ground Vehicle Components
SAE Technical Papers | 1987
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