Optimal fatigue analysis of structures during complex loadings
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A new framework for high cycle fatigue analysis of metallic structures under complex multi-parameter loadings was here developed. This allows to reduce the analysis on a 2-D window with a characterized one-parameter cyclic loading thanks to an equivalence rule relative to damage between any two loadings. The simplified inelastic analysis introduced by J. Zarka [J. Zarka et al. 1990. A new approach in inelastic analysis of structures. CADLM] was used to find the limit state of the structure. A new design rules for fatigue analysis by utilizing automatic learning systems was successfully performed. A database was built by coupling numerical simulations and experimental results on several welded specimens which are considered as a general structure in the proposed approach. This could be possible by the introduction of an intelligent description of a general fatigue case based on the actual theories and models. A software, FATPRO [M.I. Systems, FatPro, available at http://www.mzintsys.com/our_products_fatpro.html], based on this work has been developed at MZ Intelligent Systems.
[1] J. Lemaitre,et al. Mécanique des matériaux solides , 1996 .
[2] Grzegorz Glinka,et al. Rainflow counting algorithm for very long stress histories , 1987 .
[3] W H Munse,et al. Fatigue Characterization of Fabricated Ship Details for Design. , 1982 .
[4] J. Zarka,et al. A new approach in inelastic analysis of structures , 1990 .