Journal ArticleDOI
Effect of jig constraint position and pitch on welding deformation
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TLDR
In this paper, a 3D thermal elastic-plastic FEM program was employed to simulate the transient temperature and deformation occurred in the welding, and the effect of jig constraint on longitudinal shrinkage, transverse shrinkage and angular distortion was discussed.About:
This article is published in Journal of Materials Processing Technology.The article was published on 2015-07-01. It has received 71 citations till now. The article focuses on the topics: Welding & Deformation (meteorology).read more
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A comparative study of pulsed laser and pulsed TIG welding of Ti-5Al-2.5Sn titanium alloy sheet
TL;DR: In this paper, the influence of welding phenomenon on the microstructure, micro-hardness, tensile properties, surface and sub-surface residual stress distribution and deformation and distortion of both the weldments were studied.
Journal ArticleDOI
An accelerated explicit method with GPU parallel computing for thermal stress and welding deformation of large structure models
Ninshu Ma,Ninshu Ma +1 more
TL;DR: To simulate welding induced transient thermal stress and deformation of large scale FE models, an accelerated explicit method (ACEXP) and graphical processing units (GPU) parallel computing program of the finite element method (FEM) were developed.
Journal ArticleDOI
Study of microstructure, mechanical properties and residual stresses in full penetration electron beam welded Ti-5Al-2.5Sn alloy sheet
TL;DR: In this article, electron beam welding was used to weld Ti-5Al-2.5Sn alloy sheet with welding current ranging from 14-mA to 20-mA, and the welding current had a significant influence on the weld pool width, micro-hardness and grain size in the fusion zone.
Journal ArticleDOI
Out-of-plane welding distortion prediction and mitigation in stiffened welded structures
TL;DR: In this paper, a holistic investigation on out-of-plane welding distortion in fabrication of several stiffened welded structures with considering prediction and mitigation is presented, and a combined computational approach, which involves thermal elastic plastic (TEP) finite element (FE) analysis, eigenvalue analysis, and elastic FE analysis, is then employed to predict the welding distortion and clarify the generation mechanism for different welding distortion patterns.
Journal ArticleDOI
Effect of laser welding process on the microstructure, mechanical properties and residual stresses in Ti-5Al-2.5Sn alloy
TL;DR: In this paper, the effect of laser processing parameters on the weld pool shape, pulse overlap, oxide formation, and microstructure were studied using scanning electron and optical microscope, and it was found out that laser peak power had a significant influence on the FZ oxygen contents and grain size whereas, both peak power and heat input per unit length were important in defining the welding pool shape.
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FEM prediction of welding residual stress and distortion in carbon steel considering phase transformation effects
TL;DR: In this article, the authors investigated the effects of solid-state phase transformation on welding residual stress and distortion in low carbon and medium carbon steels, based on a sequentially coupled thermal, metallurgical, mechanical 3-D finite element model.
Journal Article
Analysis of thermal elastic-plastic stress and strain during welding by finite element method
Yukio Ueda,Taketo Yamakawa +1 more
TL;DR: In this article, the authors developed a method of theoretical analysis based on the finite element method, with consideration of the effects of changes in the modulus of elasticity, yield stress and the coefficient of linear thermal expansion of the metal with temperature.
Book
Welding deformation and residual stress prevention
TL;DR: Welding Deformation and residual stress prevention is addressed in this paper, where the authors provide a unique computational approach to the prediction of the effects of deformation on materials and the goal is to provide engineers and designers with the ability to create their own computational system for predicting and possibly avoiding the problem altogether.
Journal Article
Prediction of welding deformation and residual stress by elastic FEM based on inherent strain. Report 1: Mechanism of inherent strain production
TL;DR: Luo et al. as discussed by the authors predict Welding Deformation and Residual Stress by Elastic FEM based on Inherent Strain (report I) : Mechanism of Inherent strain production(Mechanics, Strength & Structure Design).
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A study on the influence of clamping on welding distortion
TL;DR: In this paper, numerical case studies on the influence of clamping on welding distortion were presented, and it was shown that the final residual stresses and distortions depend strongly on the clamping conditions.