Zdrojový dokument:Scientific papers of the University of Pardubice. Series B, Jan Perner Transport Faculty. 14 (2008)
ISSN:1211-6610
Abstrakt:
Fatigue curve determination of structural detail is difficult from computer,
experimental and financial point of view. With regard to geometry dimensions of bridge
structure is mostly necessary take into account simplifications, which may not influence
quality of results.Important aspect of fatigue curve determination is referential place of structural
detail in which is possible presume fatigue crack growing. The fatigue curve shall be
determined for this specific place. In many cases is not possible to measure stresses
exactly in mentioned place. The way of exact determination could be to measure close to
given detail and by use of FEM model to recalculate stress values into critical place
afterwards.
These conditions were met in given example of experimental fatigue curve
determination. As a result we obtained fatigue characteristics, which were different to
standards.