A benchmark study of uncertainness in welding simulation

Caprace, Jean‐David; Fu, Guangming; Carrara, Joice F.; Remes, Heikki; Shin, Sang Beom

doi:10.1016/j.marstruc.2017.07.005

Cited by 21 publications

(18 citation statements)

References 24 publications

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“…Caprace et al [5] proposed a benchmark study to understand the influence of modeler's practice and FEM codes on welding simulation results. This influence may relate to the selection of simulation parameters such as mesh size, material modeling, heat input, boundary conditions, etc.…”

Section: Fem Software Comparisonmentioning

confidence: 99%

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Comparison of Finite Element Methods in Fusion Welding Processes—A Review

Marques

Silva

Péreira

2020

Metals

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Currently, welding processes have become one of the most used methods for joining materials in all kinds of industries, thanks to properties such as high speed and high tensile strength. However, despite these advantages, this type of connection method has some drawbacks, for example, residual stress and structural distortion, mainly due to the process thermal cycles. Structural distortion is one of the major concerns of industrial joining practice. In order to decrease distortion, the variation of welding sequence, direction, and clamping conditions, have been applied through several years, by trial and error tests. However, numerical simulation enables virtual examination of the welding, mainly due to the progress on the numerical methods, which stimulated the research on welding simulation models. These models can cover a wide spectrum of physical and thermal processes occurring during, and after welding. The aim of this paper is to provide wider information about types of finite element method (FEM) in fusion welding processes and to demonstrate the accuracy of FEM models results compared to experimental.

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Section: Fem Software Comparisonmentioning

confidence: 99%

“…Diagram of the welding simulation procedure. Reproduced from[5], with permission from Elsevier, 2019.…”

mentioning

confidence: 99%

Comparison of Finite Element Methods in Fusion Welding Processes—A Review

Marques

Silva

Péreira

2020

Metals

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“…In this work, we shall use the isotropic hardening model. Equation ( 4) (CAPRACE et al, 2017) represents one possible mathematical model of isotropic hardening suitable for computer simulation, where σys0 corresponds to the yield stress and σh(ε) is the plastic deformation function.…”

Section: Residual Stressesmentioning

confidence: 99%

Analysis of the Influence of Residual Stress on Fatigue Life of Welded Joints

Tremarin

Pravia

2020

Lat. Am. j. solids struct.

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This work presents a new computational approach to estimate the fatigue life in welded joints, taking into account three-dimensional, non-proportional, and out-of-phase stresses; the thermomechanical properties of steel; parameters of the welding process; and the effects of residual stresses. We use the mechanical equations of continuous and cumulative fatigue damage found from Multiaxial RainFlow, the Wang and Brown and critical plane methods, and the Findley criteria approach. The numerical finite element method, available with software, is used to simulate the formation of residual stress and quantify its influence by solving equations. Based on the analysis of numerical results, we were able to prevision the crack location and angles of propagation of a high cycle fatigue crack with totally random loads in a metallic structure. We conclude that the result of the computational method is valid and can be used to estimate and life in fatigue in welded joints.

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“…Nowadays, this type of simulation is well-used in industrial companies. It allows to estimate the metallurgical and mechanical consequences induced by welding (microstructure, residual stresses and distortions) [1,2,11,12,13,14,15,16,17,18], thus providing very relevant information for the quality of the final structure and for fatigue lifetime predictions.…”

Section: Introdutionmentioning

confidence: 99%

New strategy of solid/fluid coupling during numerical simulation of thermo-mechanical processes

Saadlaoui

Delache

Feulvarch

et al. 2020

Journal of Fluids and Structures

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In this study, numerical methods are developed to simulate thermomechanical processes, taking into account both the fluid flows in the molten pool and the deformations of the solid parts. The methods are based on a new strategy of solid/fluid coupling. They allow to simulate the formation of the molten pool by taking into account the fluid flows through both effects of the surface tension ("curvature effect" and "Marangoni effect") and the buoyancy. An ALE approach is used to follow the evolution of the free surface. The effects of the deformations in the base metal on the fluid flows in the molten pool (solid/fluid interaction) is ensured by imposing the velocities of the solid nodes during the thermo-fluid simulation. As an application, a thermo-fluid-mechanical simulation of laser welding is carried out. It is found that the solid/fluid interaction has a minor effect on simulation results.

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A benchmark study of uncertainness in welding simulation

Cited by 21 publications

References 24 publications

Comparison of Finite Element Methods in Fusion Welding Processes—A Review

Comparison of Finite Element Methods in Fusion Welding Processes—A Review

Analysis of the Influence of Residual Stress on Fatigue Life of Welded Joints

New strategy of solid/fluid coupling during numerical simulation of thermo-mechanical processes

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