The impact of production-dependent geometric properties on fatigue-relevant stresses in laser-welded corrugated core steel sandwich panels
Artikel i vetenskaplig tidskrift, 2019

For bridge deck applications, laser-welded corrugated core steel sandwich panels with dual weld lines per crest and trough have been shown to be highly material- and economically efficient. The nature of welding induces a variation in the geometric properties of the joint that connects the core to the faces. The geometric properties of the joint are the weld width, weld misalignment, and plate gap between the core and the faces. This paper aims to investigate the impact of the variation of the production-dependent geometric properties of the joint on the fatigue-relevant stresses. A secondary aim of this paper is to investigate the impact of contact between the core and the faces on the weld region stresses. Within this paper, the production of four sandwich panels is documented and the manufacturing-dependent geometric properties of their joints are quantified. In order to investigate the impact of the natural variation of the parameters, a parametric study based on finite element analyses is executed. The result of the parametric study shows, among several other findings, that misalignment of the weld line in relation to the core direction can lead to considerable increases in stresses, determinant for the fatigue life of the panel.

Corrugated core

Steel sandwich panel

Laser weld

Fatigue

Joint geometry

Författare

Peter Nilsson

Chalmers, Arkitektur och samhällsbyggnadsteknik, Konstruktionsteknik

Joakim Hedegård

Swerea KIMAB

Mohammad al-Emrani

Chalmers, Arkitektur och samhällsbyggnadsteknik, Konstruktionsteknik

Rasoul Atashipour

Chalmers, Arkitektur och samhällsbyggnadsteknik, Konstruktionsteknik

Welding in the World, Le Soudage Dans Le Monde

0043-2288 (ISSN)

Vol. 63 6 1801-1818

Ämneskategorier

Teknisk mekanik

Bearbetnings-, yt- och fogningsteknik

Kompositmaterial och -teknik

DOI

10.1007/s40194-019-00769-2

Mer information

Senast uppdaterat

2019-11-07