Computer Aided Dimensioning of Spot-Welded Automotive Structures

Fatigue Life Prediction Methods of Resistance Spot-Welded Joints

“…Rupp et al (1995) proposed the following equivalent stress amplitude at R = 0 (σ eq,0 ) by modifying the equivalent stress amplitude (σ eq,a ) and equivalent mean stress (σ eq,m ) based on a Goodman-type mean stress correction procedure:…”

“…The failure mode of spot-welded joints was determined using a simple guideline that is generally accepted in industry (Rupp et al, 1995). When the weld nugget diameter versus sheet thickness is plotted, the boundary value of the cracking in the sheet and through the nugget is 3:5 ffi ffi t p , where t is the sheet thickness.…”

“…The linear elastic finite element analysis showed the limitation to calculate the stresses at the edge of spot-welded joints even with a finely meshed model because of considerable plastic deformation at the edge of the weld nugget (Rupp, Storzel, & Grubisic, 1995). In structural stress approaches, a rigid beam element typically represents the weld nugget in finite element models to obtain forces and moments at the spot-welded joints (Kang et al, 2000;Kang, 2005).…”

A novel approach to simulate the stiffness behaviour of spot welded vehicle structures under multi axial variable amplitude loading

“…For the numerical fatigue life assessment of spot welded components the FESPOW concept is often used in the automotive industry [8,9]. The spot weld nugget with a diameter connecting two sheets with the according sheet thickness 1,2 is represented by beam elements.…”

Finite element models of spot welds in structural dynamics: review and updating

“…Very simple models of spot welds have been used extensively in the automotive industry for many years, consisting of elastic or rigid beams, or even coincident nodes [16][17][18][19][20][21][22]. All of these models require the upper and lower plates to be meshed congruently, to allow the nodes that are joined to lie on a line perpendicular to both of the plates.…”