Change search
ReferencesLink to record
Permanent link

Direct link
FEM study of fatigue response of 3-sheet spot welded joints
(Swerea KIMAB)
KTH, School of Industrial Engineering and Management (ITM), Production Engineering.ORCID iD: 0000-0002-6061-662X
2006 (English)In: Steel Research International, ISSN 1611-3683, Vol. 4, no 77, 292-296 p.Article in journal (Refereed) Published
Abstract [en]

The commercial software used for predicting fatigue strength for load-carrying spot welds in sheet structures, like car bodies, is mainly developed for two-sheet joints. The purpose of this work was to study the fatigue properties of three-sheet spot welded joints with a dimensioning method used in the automotive industry and to compare such computational results to those obtained from a more accurate method and to experimental data. Eleven three-sheet, single spot welded specimens were studied using a structural stress approach, followed by shell element simulations, similar to those used in commercial software. These results were compared to calculations based on fine meshed solid element models. Fracture mechanics was used to evaluate the loading conditions at the spot welds. Comparison between the results from the different methods and experimental results for three shear loaded specimens, consisting of triple sheets, found in literature showed good correlation. The shell element method in shear loaded cases gives stress intensities within +35% to -5% of the solid element method results. In peel loaded cases the results differ up to -60%, an under-estimation that leads to an increase of estimated fatigue life up to 65 times.

Place, publisher, year, edition, pages
2006. Vol. 4, no 77, 292-296 p.
Keyword [en]
three-sheet spot welded joints, stress intensity factor, fatigue, fracture mechanics, FEM, design methods
National Category
Engineering and Technology
URN: urn:nbn:se:kth:diva-47693ISI: 000237794000010OAI: diva2:456048
QC 20111114Available from: 2011-11-11 Created: 2011-11-11 Last updated: 2011-11-14Bibliographically approved

Open Access in DiVA

No full text

Search in DiVA

By author/editor
Melander, Arne
By organisation
Production Engineering
In the same journal
Steel Research International
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 22 hits
ReferencesLink to record
Permanent link

Direct link