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Assessment of local multiaxial stresses on a cast aluminium truck wheel under complex service loading and fatigue life evaluation

 
: Küppers, M.; Sonsino, C.M.; Fischer, G.; Störzel, K.

Ranganathan, N.; Sonsino, C.M. ; Societe Francaise de Metallurgie et de Materiaux -SF2M-, Commission de Fatigue des Metaux:
Symposium on Fatigue Testing and Analysis under Variable Amplitude Loading Conditions 2002. Extended abstracts : Tenth International Spring Meeting, Hotel de Ville, Tours (France), 29-31 May 2002
Tours, 2002
pp.42.1-42.3
Symposium on Fatigue Testing and Analysis under Variable Amplitude Loading Conditions <2002, Tours>
Societe Francaise de Metallurgie et de Materiaux (International Spring Meeting) <10, 2002, Tours>
English
Conference Paper
Fraunhofer LBF ()
Palmgren-Miner rule; hub; zwarp; strength hypothesis; damage accumulation; crack initiation; strain; damage sum

Abstract
The assessment of multiaxial stress states is already a very difficult subject for constant amplitude loading. If the stresses occur additionally at random, the assessment procedure becomes even more complex, because the design engineer is confronted with following problems like selection of the valid strength hypothesis by which the multiaxial stress state, especially for changing principal stress directions, has to be transformed into an equivalent uniaxial state and the application of the valid damage accumulation hypothesis for accounting of the stress spectrum.
Especially, for safety components like wheels for which failures during service must be prevented, the challenge of the assessment procedure becomes obvious.

: http://publica.fraunhofer.de/documents/N-9919.html