Comprehensive numerical analysis of a three-pass bead-in-slot weld and its critical validation using neutron and synchrotron diffraction residual stress measurements

Muránsky, Ondrej; Smith, Marcus; Bendeich, Philip J.; Holden, T. M.; Luzin, Vladimir; Martins, R.V.; Edwards, L.

doi:10.1016/j.ijsolstr.2011.07.006

Cited by 69 publications

(54 citation statements)

References 14 publications

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“…In the first step, a numerical tool (FEAT-WMT) was used to derive an ellipsoidal heat source involving lateral motion (weaving) with respect to the centre line of the specified weld region [23]. The ellipsoidal heat source is defined by…”

Section: Description Of Problem and Methods Benchmark Edge-welded Beammentioning

confidence: 99%

“…Combined hardening models have been shown to be best suited to describing the cyclic plastic behaviour of austenitic Type 316 stainless steel [25,26]. It has been also demonstrated that the use of combined hardening models and moving heat sources can most accurately capture the residual stresses in stainless steel welds [22,23,25,[27][28][29].…”

Section: Macrographmentioning

confidence: 99%

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Evaluation of Errors Associated with Cutting-Induced Plasticity in Residual Stress Measurements Using the Contour Method

et al. 2017

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Cutting-induced plasticity can lead to elevated uncertainties in residual stress measurements made by the contour method. In this study plasticity-induced stress errors are numerically evaluated for a benchmark edge-welded beam to understand the underlying mechanism. Welding and cutting are sequentially simulated by finite element models which have been validated by previous experimental results. It is found that a cutting direction normal to the symmetry plane of the residual stress distribution can lead to a substantially asymmetrical back-calculated stress distribution, owing to cutting-induced plasticity. In general, the stresses at sample edges are most susceptible to error, particularly when the sample is restrained during cutting. Inadequate clamping (far from the plane of cut) can lead to highly concentrated plastic deformation in local regions, and consequently the back-calculated stresses have exceptionally high values and gradients at these locations. Furthermore, the overall stress distribution is skewed towards the end-of-cut side. Adequate clamping (close to the plane of cut) minimises errors in back-calculated stress which becomes insensitive to the cutting direction. For minimal constraint (i.e. solely preventing rigid body motion), the plastic deformation is relatively smoothly distributed, and an optimal cutting direction (i.e. cutting from the base material towards the weld region in a direction that falls within the residual stress symmetry plane) is identified by evaluating the magnitude of stress errors. These findings suggest that cutting process information is important for the evaluation of potential plasticity-induced errors in contour method results, and that the cutting direction and clamping strategy can be optimised with an understanding of their effects on plasticity and hence the back-calculated stresses.

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Section: Description Of Problem and Methods Benchmark Edge-welded Beammentioning

confidence: 99%

Section: Macrographmentioning

confidence: 99%

Evaluation of Errors Associated with Cutting-Induced Plasticity in Residual Stress Measurements Using the Contour Method

et al. 2017

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“…The experiments and modeling were reported by Muransky et al [37]. The prediction of stresses in a weld is difficult because of the complexity of the welding process.…”

Section: Residual Stress In a Three-pass Bead-in-slot Weldmentioning

confidence: 99%

“…Reproduced with permission from[37]12 Measurements of the longitudinal (triangles), transverse (points) and normal (squares) residual stresses made 2 mm below the surface of the plate along the longitudinal direction beneath the weld. (a) Neutron diffraction measurements and (b) synchrotron X-ray measurements using the spiral-slit method.…”

mentioning

confidence: 99%