Fatigue life duration prediction for welded spots by volumetric method

Adib, H.; Gilgert, J.; Pluvinage, G.

doi:10.1016/s0142-1123(03)00068-9

Cited by 49 publications

(24 citation statements)

References 18 publications

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“…This implies that fatigue testing of spot welded specimens involving more than one spot weld must be examined for proper design of spot welded joints. Adib et al [19] studied the mechanical behavior of spot welds under tensile shear for one, three and five spot welds. Their results revealed that the application of further spot welds in multiple tensile-shear hot spot welded joints did not induce a grave difference between triple points and multiple points hot spot welds.…”

Section: Introductionmentioning

confidence: 99%

Spot weld arrangement effects on the fatigue behavior of multi-spot welded joints

2011

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In the present study, the effects of spot weld arrangements in multi-spot welded joints on the fatigue behavior of the joints are studied. Three different four-spot welded joints are considered: one-row four-spot parallel to the loading direction, one-row four-spot perpendicular to the loading direction and two-row four-spot weld specimens. The experimental fatigue test results reveal that the differences between the fatigue lives of three spot welded types in the low cycle regime are more considerable than those in the high cycle regime.However, all kinds of spot weld specimens have similar fatigue strength when approaching a million cycles. A non-linear finite element analysis is performed to obtain the relative stress gradients, effective distances and notch strength reduction factors based on the volumetric approach. The work here shows that the volumetric approach does a very good job in predicting the fatigue life of the multi-spot welded joints.

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Section: Introductionmentioning

confidence: 99%

Spot weld arrangement effects on the fatigue behavior of multi-spot welded joints

2011

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“…joint. Results of relative researches [4][5][6] show that the fatigue strength is mainly controlled by the residual stress, gap and stress concentration at the notch of nugget.…”

Section: Introductionmentioning

confidence: 99%

Finite element analysis for the mechanical features of resistance spot welding process

Zhong-jie

Kim

Wang

et al. 2007

Journal of Materials Processing Technology

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“…This means that the fracture-based parameters will include the micro-structural effects. This would be very useful approach in dealing with the porous solids like welded joints (including pores) (Adib et al, 2004;Zalt et al, 2011) and other porous solids under multi-axial loadings using the notch fracture mechanics including the cyclic loading.…”

Section: Synthesis and Outlooksmentioning

confidence: 99%

Non-linear elastic micro-dilatation theory: Matrix exponential function paradigm

Ramézani

Jeong²

2015

International Journal of Solids and Structures

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a b s t r a c tIn the present paper, the micro-dilatation theory or void elasticity is extended to both large displacement and large dilatation. Firstly, the deformation gradient tensor has been freshly defined by means of the matrix exponential function. The newly defined relation for the deformation gradient has painstakingly investigated for the uniqueness, decomposition issues as well as objectivity and isotropy considerations. The relation of the displacement gradient and deformation gradient tensor is brought via the matrix logarithm function. The micro-dilatation theory constitutive laws are derived using the thermodynamic principles under the zero-centrosymmetric, weakly-centrosymmetric and fully-centrosymmetric cases. These cases have been derived and scrutinized by the numerical experiments. To achieve this assignment, the basic loadings are taken into account, e.g. the hydrostatic loading, simple traction and shear. Some conclusions and outlook pertaining to the above-mentioned cases and variable bulk density have thereafter discussed.

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Fatigue life duration prediction for welded spots by volumetric method

Cited by 49 publications

References 18 publications

Spot weld arrangement effects on the fatigue behavior of multi-spot welded joints

Spot weld arrangement effects on the fatigue behavior of multi-spot welded joints

Finite element analysis for the mechanical features of resistance spot welding process

Non-linear elastic micro-dilatation theory: Matrix exponential function paradigm

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