Understanding the fatigue behavior of riveted joints: Modelling of the hot riveted process
LEPRETRE ; CHATAIGNER ; DIENG ; GAILLET
Type de document
COMMUNICATION AVEC ACTES INTERNATIONAL (ACTI)
Langue
anglais
Auteur
LEPRETRE ; CHATAIGNER ; DIENG ; GAILLET
Résumé / Abstract
Most of the existing steel bridges were designed and constructed in the beginning of the twentieth century and hence are today reaching their design life. These old steel bridges are mostly riveted using predominantly wrought iron and mild steel. To maintain these old structures, owners need structural assessment methods to determine the remaining capacities in order to decide whether their design life may be increased, or whether maintenance or reconditioning operations are necessary.
In order to be able to carry out such analyses, it is first momentous to get a deep understanding of both the initial stress state before service, and the loads they carried during their whole life. The presented study handles with the first topic and proposes a modelling method based on the use of finite elements. This model will allow us to obtain the pre-stress force existing in the assembly, and to identify the most critical zones where fatigue cracks should initiate.
