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Fatigue Life of Multi-Spot Welded Structures

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Abstract:

A procedure that makes use of a conventional stress value (ERS) is applied to spot welded joints. The ERS can be evaluated for every spot weld of the structural model. Through the use of ERS-N curves, fatigue data performed on different joint geometries can be successfully mixed together. One of the main aspects is that progressive damage deeply influences fatigue behaviour, so that a simple numerical solution neglecting accumulated damage is unable to foresee the whole fatigue life. In the present paper the method has been applied to many experimental results: it is shown that a unique criterion is able to deal with several different structures and materials.

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Periodical:

Key Engineering Materials (Volumes 348-349)

Pages:

249-252

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.348-349.249

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Online since:

September 2007

Authors:

Pietro Salvini, Francesco Vivio, Vincenzo Vullo

Keywords:

Finite Element Model (FEM), Jointed Structures, Progressive Damage, Spot Weld

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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