Numerical analysis of residual stresses in a T-joint fillet weld using a submodeling technique

Perić, Mato; Tonković, Zdenko; Maksimović, Katarina; Stamenković, Dragi

doi:10.5937/fmet1901183p

Cited by 17 publications

(14 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As stated in [25] the mathematical model was developed using MATLAB tool to further predict the temperature distribution and total stress concentration at any localized nodal point. The model can be used to obtain optimal weld parameters such as weld, speed torch temperature, current and voltage.The residual stress was predicted through a model of the multi-pass girth weld joint using Finite Element Method (FEM) [26,27].…”

Section: Management Methods For Quality Evaluation Of the Weld Jointsmentioning

confidence: 99%

Quality evaluation of welding joints by different methods

Ťavodová¹,

Náprstková²,

Hnilicová³

et al. 2020

FME Transactions

View full text Add to dashboard Cite

This paper presents the results of the quality evaluation of the weld joints on welded pipes used in industrial energy. The quality evaluation of the weld joints was performed by two methods. Using technical methods, welding faults and defects were examined, identified and evaluated by a metallographic analysis on the macrostructure of welds. According to ISO 6520-1:2007, the faults and defects were detected and classified into the group and classified into quality levels using ISO 5817:2008-03. Two quality management tools using a Cause and effect diagram - Iskihawa diagram and a Pareto diagram also evaluated the quality control of welds. These two tools enabled to identify the causes of welding defects as well as to determine the frequency of their occurrence and to identify the most serious welding faults and defects. Both methods - technical and management, should reveal shortcomings in both technical, technological and personnel aspect. Their use should contribute to improving the welding process of pipes in operation and to increasing the safety of piping systems.

show abstract

Section: Management Methods For Quality Evaluation Of the Weld Jointsmentioning

confidence: 99%

Quality evaluation of welding joints by different methods

Ťavodová¹,

Náprstková²,

Hnilicová³

et al. 2020

FME Transactions

View full text Add to dashboard Cite

show abstract

“…All the dimensions of the disk, plate, and gap are given in Figure 1. The mesh sensitivity was controlled by applying the submodeling technique [44,45], whereby the areas of high temperature gradients in the weld and its vicinity were carefully controlled. In both the thermal and mechanical analyses, the same mesh of finite elements was used with a conversion of DC3D8 elements from the thermal analysis to C3D8I elements in the mechanical analysis.…”

Section: Finite Element Meshmentioning

confidence: 99%

Numerical Simulation and Experimental Investigation of Temperature and Residual Stress Distributions in a Circular Patch Welded Structure

Perić¹,

Nižetić

Tonković

et al. 2020

Energies

Self Cite

View full text Add to dashboard Cite

In this study, we performed a numerical simulation and experimental measurements on a steel circular patch welded structure to investigate the temperature and residual stress field distributions caused by the application of buried-arc welding technology. The temperature histories during the welding and subsequent cooling process were recorded for two locations, with the thermocouples mounted inside the plate close to the weld bead. On the upper surface of the welded model, the temperature-time changes during the cooling process were monitored using an infrared camera. The numerically calculated temperature values correlated well with the experimentally measured ones, while the maximum deviation of the measured and calculated temperatures was within 9%. Based on the numerical result analysis regarding circumferential and radial stresses after the completion of the welding process, it is concluded that both stresses are primarily tensile within the circular disk. Outside the disk, the circumferential stresses turn from tensile to compressive, while on the other hand the radial stresses disappear towards the ends of the plate.

show abstract

“…Additionally, it is very well‐known that in the weld area and its vicinity, the finite element mesh must be very dense so that the large temperature as well as stress and strain gradients can be properly solved. In this study, the mesh sensitivity analysis is performed using a submodeling technique that basically consists of a transition from global model to local submodel . For this purpose, two submodels, named, Submodel‐S1 and Submodel‐S2, are analyzed, and their dimensions and number of finite elements are given in Table .…”

Section: Numerical Modelmentioning

confidence: 99%

“…In this study, the mesh sensitivity analysis is performed using a submodeling technique that basically consists of a transition from global model to local submodel. 35,36 For this purpose, two submodels, named, Submodel-S1 and Submodel-S2, are analyzed, and their dimensions and number of finite elements are given in Table 2.…”

Section: Numerical Modelmentioning

confidence: 99%

Numerical prediction and experimental validation of temperature and residual stress distributions in buried‐arc welded thick plates

et al. 2019

Self Cite

View full text Add to dashboard Cite

Summary The paper deals with the numerical simulation and experimental investigations of a buried‐arc welding process on a butt‐welded plate sample. In the numerical investigations, the finite element analysis is carried out by applying the element birth and death technique in the thermal analysis, while the mechanical analysis is performed simultaneously in one step to reduce simulation time. The temperature history at two locations is recorded with thermocouples, while residual stresses are measured by using the hole‐drilling stress relaxation method at four points. The heat input efficiency for the buried‐arc welding process is determined by using a parametric analysis. The numerically obtained temperatures and residual stresses correspond very well with the experimental measurements. Furthermore, by using buried‐arc welding, 73% of the weld filler material is saved and 59% of energy, whereas the CO2 emission to the atmosphere is reduced by 83% in comparison with conventional metal active gas welding for a model of the same dimensions.

show abstract

Numerical analysis of residual stresses in a T-joint fillet weld using a submodeling technique

Cited by 17 publications

References 31 publications

Quality evaluation of welding joints by different methods

Quality evaluation of welding joints by different methods

Numerical Simulation and Experimental Investigation of Temperature and Residual Stress Distributions in a Circular Patch Welded Structure

Numerical prediction and experimental validation of temperature and residual stress distributions in buried‐arc welded thick plates

Contact Info

Product

Resources

About