A novel technique for multiaxial fatigue modelling of ground vehicle notched components Online publication date: Mon, 18-May-2015
by Ayhan Ince
International Journal of Vehicle Design (IJVD), Vol. 67, No. 3, 2015
Abstract: Fatigue failures of driveline and suspension for ground vehicles under multiaxial loading conditions are common, since most of those components are subjected to complex multiaxial loadings in service. A computational fatigue analysis methodology has been proposed here for performing multiaxial fatigue life prediction for notched components using analytical and numerical methods. The proposed fatigue analysis methodology consists of an elastic-plastic stress/strain model and a multiaxial fatigue damage parameter. Results of the proposed fatigue analysis methodology are compared to sets of experimental data published in the literature to verify the prediction capability of the elastic-plastic stress/strain model and the multiaxial fatigue damage parameter. Based on the comparison between calculated results and experimental data, it is found that the proposed multiaxial analysis methodology correlates well with experimental strain data for SAE 1070 steel notched shafts and experimental fatigue data of SAE 1045 steel notched shafts.
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