Influence of residual stresses on the fatigue life of welded joints. Numerical simulation and experimental tests

Chiocca, Andrea; Frendo, Francesco; Aiello, Francesco; Bertini, Leonardo

doi:10.1016/j.ijfatigue.2022.106901

Cited by 36 publications

(17 citation statements)

References 65 publications

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“…Chiocca et al 93 researched that no significant influence of residual stresses was observed for specimens loaded in bending; in this case, stress relieving was observed to provide no significant improvement in fatigue endurance.…”

Section: Resultsmentioning

confidence: 95%

Experimental study on the verification of adequate fatigue test specimen size of U‐rib‐to‐deck joints in orthotropic steel bridge decks

Yang

2022

Fatigue Fract Eng Mat Struct

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In this study, the distribution of residual stress of the substructure model and small coupon specimens in orthotropic steel bridge structures is experimentally and numerically investigated to validate adequate specimen sizes. Blindhole drilling and X-ray diffraction methods are used to capture longitudinal and transverse residual stresses and evaluate the effects of the cutting process. The maximum LRS and TRS were reduced by 16.6% and 15.6% from those that existed before cutting, verifying the proper size of small voucher specimens. The width-to-thickness ratio of 6-6.25 of small coupon specimens has proven sufficient to capture the effects of stress triaxiality induced by the residual stress. In the spirit of master S-N curves in ASME standard, the role of residual stress was represented in the fatigue process and does not be additionally taken into account when predicting the fatigue performances of welded structures using prediction methods based on the S-N curves. K E Y W O R D Sadequate specimen size, blind-hole drilling and X-ray diffraction methods, orthotropic steel bridge decks, residual stress effect, thermo-structure coupling method

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Section: Resultsmentioning

confidence: 95%

Experimental study on the verification of adequate fatigue test specimen size of U‐rib‐to‐deck joints in orthotropic steel bridge decks

Yang

2022

Fatigue Fract Eng Mat Struct

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“…The seam weld of interest for this work was the one between the tube and the base plate. The welded joint was previously studied by the same authors examining its fatigue endurance under different loading conditions and in the presence of residual stresses 4‐6,42‐45 . For all the cases, FE‐analyses were conducted using the second release of Ansys© 2021 software.…”

Section: Methodsmentioning

confidence: 99%

Closed‐form solution for the Fatemi‐Socie extended critical plane parameter in case of linear elasticity and proportional loading

Chiocca,

Sgamma,

Frendo

2023

Fatigue Fract Eng Mat Struct

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Fatigue damage remains a significant issue for both metallic and non‐metallic components, being the main cause of in‐service failures. Among the different assessment methodologies, critical plane methods have gained significance as they enable identifying the critical location and the early crack propagation orientation. However, the standard plane scanning method used for calculating critical plane factors is computationally intensive, and as a result, it is usually applied only when the component's critical region is known in advance. In the presence of complex geometries, loads, or constraints, a more efficient method would be required. This work presents a closed‐form solution to efficiently evaluate a critical plane factor based on the Fatemi‐Socie criterion, in the case of isotropic linear‐elastic material behavior and proportional loading conditions. The proposed algorithm, based on tensor invariants and coordinate transformation laws, was tested on different case studies under various loading conditions, showing a significant reduction in computation time compared to the standard plane scanning method.

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“…It was proven that predicted welding residual stresses revealed a relatively good agreement with the measured ones. The application of the hole drilling method to compare measured and predicted welding residual stresses was also used in the work of Puymbroeck [ 19 ], where it was taken into account its effect on the fatigue life (also studied in [ 20 , 21 ]). In addition to the fatigue properties, great attention is also paid to the heat treatment processes and their influence on the magnitude of the welding-induced residual stresses [ 22 , 23 , 24 ].…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Analysis of the Residual Stresses in Seamed Pipe in Dependence on Welding and Metal Forming

et al. 2023

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Concerning the increasingly widespread utilization of the finite element method (FEM), the concept of the so-called virtual factory is also gaining ground, and not only in the engineering industry. This approach does not use numerical simulations of individual production technologies separately but treats the entire production process as a chain of interrelated technologies. Thus, the output data from one technology is taken as input data for the following technology. The resulting thermal and mechanical effects are then not only dealt with within one technology but always comprehensively within the production process. In the consideration of the loading and subsequent service lives of manufactured components, values of residual stresses are one of the very important characteristics. For these reasons, this paper deals with the effect of residual stresses’ magnitude and distribution during the formation and the final springback of the seamed pipe end section with and without respect to the influence of the preceding welding. The resulting residual stress values from numerical simulations are subsequently compared with the actual values of residual stresses experimentally measured using X-ray diffraction.

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Influence of residual stresses on the fatigue life of welded joints. Numerical simulation and experimental tests

Cited by 36 publications

References 65 publications

Experimental study on the verification of adequate fatigue test specimen size of U‐rib‐to‐deck joints in orthotropic steel bridge decks

Experimental study on the verification of adequate fatigue test specimen size of U‐rib‐to‐deck joints in orthotropic steel bridge decks

Closed‐form solution for the Fatemi‐Socie extended critical plane parameter in case of linear elasticity and proportional loading

Experimental and Numerical Analysis of the Residual Stresses in Seamed Pipe in Dependence on Welding and Metal Forming

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