Numerical Simulation on Residual Stress Distribution of the Pipe-Plate Welding

2009 ◽  
Vol 417-418 ◽  
pp. 937-940
Author(s):  
Li Li ◽  
Ren Fu Wang ◽  
Gang Xue ◽  
Xiang Jun Min
Keyword(s):  
Residual Stress ◽  
Stress Distribution ◽  
Axial Stress ◽  
Three Dimensional ◽  
Good Method ◽  
Residual Stress Distribution ◽  
Welding Residual Stress ◽  
Accurate Estimation ◽  
Element Analysis ◽  
Plate Structure

The pipe-plate welding is a common type of joint in almost all industries. However the presence of residual stresses can be detrimental to the performance of the welded product. Therefore a good method for accurate estimation of the welding residual stress is needed. In this paper, three-dimensional finite element analysis is carried out to simulate pipe-plate structure. Based on the ANSYS software, the residual stress distribution of the pipe-plate structure during welding and after welding is predicted. The calculation results show that the residual stress of weld bead is higher than other places. The radial stress, hoop stress and axial stress are not significantly sensitive to the angle.

Influence of the Welded Joint on the Mechanical Behavior of Steel Piles during Static and Dynamic Deformation

2007 ◽  
Vol 345-346 ◽  
pp. 1469-1472
Author(s):  
Gab Chul Jang ◽  
Kyong Ho Chang ◽  
Chin Hyung Lee
Keyword(s):  
Residual Stress ◽  
Stress Distribution ◽  
Mechanical Behavior ◽  
Welded Joint ◽  
Dynamic Deformation ◽  
Three Dimensional ◽  
Steel Structures ◽  
Residual Stress Distribution ◽  
Dynamic Mechanical Behavior ◽  
Steel Piles

During manufacturing the welded joint of steel structures, residual stress is produced and weld metal is used inevitably. And residual stress and weld metal influence on the static and dynamic mechanical behavior of steel structures. Therefore, to predict the mechanical behavior of steel pile with a welded joint during static and dynamic deformation, the research on the influence of the welded joints on the static and dynamic behavior of steel pile is clarified. In this paper, the residual stress distribution in a welded joint of steel piles was investigated by using three-dimensional welding analysis. The static and dynamic mechanical behavior of steel piles with a welded joint is investigated by three-dimensional elastic-plastic finite element analysis using a proposed dynamic hysteresis model. Numerical analyses of the steel pile with a welded joint were compared to that without a welded joint with respect to load carrying capacity and residual stress distribution. The influence of the welded joint on the mechanical behavior of steel piles during static and dynamic deformation was clarified by comparing analytical results

Finite element analysis of the residual stress of automotive wheel made of long glass fiber-reinforced thermoplastic composite

2018 ◽  
Vol 233 (10) ◽  
pp. 3592-3602 ◽  
Author(s):  
Weihao Chai ◽  
Xiandong Liu ◽  
Yinchun Shan ◽  
Xiaofei Wan ◽  
Er Jiang
Keyword(s):  
Residual Stress ◽  
Stress Distribution ◽  
Simulation Method ◽  
Residual Stress Distribution ◽  
Thermoplastic Composite ◽  
Element Analysis ◽  
Simulation Accuracy ◽  
Glass Fiber Reinforced ◽  
Long Glass Fiber ◽  
Bending Fatigue Test

To increase the simulation accuracy, a finite element analysis method for the prediction of the residual stress distribution in the injection molded wheel made of the long glass fiber-reinforced thermoplastic composite (LGFT) is studied, and a simulation method of the wheel bending fatigue test considering the residual stress distribution is investigated in this paper. First, the in-cavity residual stress is calculated using the molding simulation method. Then the residual stress relaxation process is analyzed and the final residual stress distribution is obtained. With the residual stress as the initial stress, the structural simulation of the LGFT wheel under the bending load is performed. To evaluate the influence of the residual stress on the LGFT wheel, an additional simulation without considering the residual stress is conducted. The result shows that the interior stress considering residual stress is much higher than that without considering residual stress. To verify the simulation accuracy of these two cases, the high-stress area locations in the simulation results are compared with the damage locations in physical bending fatigue test. The result illustrates that the simulation result considering the residual stress accords with the experimental result better. Therefore, the simulation result of the residual stress is reasonable, and it is necessary to consider residual stress in the simulation of the LGFT wheel.

scholarly journals Residual Stress Distribution in Feal Weld Overlay on Steel

1994 ◽  
Vol 364 ◽  
Author(s):  
X.-L. Wang ◽  
S. Spooner ◽  
C. R. Hubbard ◽  
P. J. Maziasz ◽  
G. M. Goodwin ◽  
...  
Keyword(s):  
Experimental Data ◽  
Heat Treatment ◽  
Residual Stress ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Stress Distribution ◽  
Post Weld Heat Treatment ◽  
Residual Stress Distribution ◽  
Element Analysis ◽  
Weld Overlay

AbstractNeutron diffraction was used to measure the residual stress distribution in an FeAl weld overlay on steel. It was found that the residual stresses accumulated during welding were essentially removed by the post-weld heat treatment that was applied to the specimen; most residual stresses in the specimen developed during cooling following the post-weld heat treatment. The experimental data were compared with a plasto-elastic finite element analysis. While some disagreement exists in absolute strain values, there is satisfactory agreement in strain spatial distribution between the experimental data and the finite element analysis.

A Probabilistic Evaluation Model for Welding Residual Stress Distribution at Piping Joint in Probabilistic Fracture Mechanics Analysis

2008 ◽  
Author(s):  
Hiroto Itoh ◽  
Jinya Katsuyama ◽  
Kunio Onizawa
Keyword(s):  
Residual Stress ◽  
Stress Distribution ◽  
Fracture Mechanics ◽  
Failure Probability ◽  
Evaluation Model ◽  
Residual Stress Distribution ◽  
Welding Residual Stress ◽  
Probabilistic Fracture Mechanics ◽  
Probabilistic Evaluation ◽  
Aging Knowledge

Stress corrosion cracking (SCC) has been observed at some piping joints made by Austenitic stainless steel in BWR plants. In JAEA, we have been developing probabilistic fracture mechanics (PFM) analysis methods for aged piping based on latest aging knowledge and an analytical code, PASCAL-SP. PASCAL-SP evaluates the failure probability of piping at aged welded joints under SCC by a Monte Carlo method. We proposes a simplified probabilistic model which can be applied to the failure probability analysis based on PFM for welded joint of piping considering the uncertainty of welding residual stress. And the probabilistic evaluation model is introduced to PASCAL-SP. A parametric PFM analysis concerning uncertainties of residual stress distribution using PASCAL-SP was performed. The PFM analysis showed that the uncertainties of residual stress distribution largely influenced break probability. The break probability increased with increasing the uncertainties of residual stress.

Effects of Flange Width Ratio on the Residual Stresses in Welded Monosymmetric I-Section

2014 ◽  
Vol 501-504 ◽  
pp. 574-577
Author(s):  
Zhuang Nan Zhang ◽  
Xin Zhao ◽  
Ya Nan Zhao
Keyword(s):  
Residual Stress ◽  
Stress Distribution ◽  
Residual Stress Distribution ◽  
Welding Residual Stress ◽  
Width Ratio ◽  
Residual Tensile Stress ◽  
Growth Trend ◽  
Finite Element Software ◽  
Compressive Stresses ◽  
Peak Value

This paper used ANSYS finite element software to simulate the residual stress of the welded monosymmetric I-section and obtain residual stress distribution curves, analyzed the influence of flange width ratio on welding residual stress peak value and the stress distribution. The studies have shown that: with the flange width ratio decrease gradually, peak value of residual stress in flange and web is to increase; peak value of residual tensile stresses in both flange and web close to the steel yield strength fy, peak value of residual compressive stresses is 0.4fy in wide flange and the web near wide flange and in narrow flange and web near narrow flange is 0.3fy; the distribution of the residual tensile stress in the flange and web have growth trend.

Residual Stress Distribution of Ceramic-Metal Joint

1989 ◽  
Vol 33 ◽  
pp. 353-362 ◽  
Author(s):  
Masanori Kurita ◽  
Makoto Sato ◽  
Ikuo Ihara ◽  
Akira Saito
Keyword(s):  
Residual Stress ◽  
Stress Distribution ◽  
Stress Analysis ◽  
Three Dimensional ◽  
Axial Direction ◽  
Residual Stress Distribution ◽  
X Ray Diffraction ◽  
Copper Sheet ◽  
Brittle Behavior ◽  
Curve Method

AbstractCeramics are sometimes bonded to ductile metals in order to make up for their brittle behavior for industrial use. The residual stress will be induced in ceramics bonded to metals at high temeprature, and it has a strong influence on the strength of ceramic-metal joints. A silicon nitride plate was bonded to a carbon steel plate by brazing to a copper sheet sandwiched between the two materials. The residual stress distribution of the joint specimen was determined by x-ray diffraction using the Gaussian curve method. The measured residual stress distribution almost agreed with that calculated by the three-dimensional thermoelastoplastic stress analysis using FEM, but differed remarkably from that calculated by the two-dimensional stress analysis. This is because a stress concentration occurs at the ceramic-metal interface and the stress distributes three - dimensionally. The stress σx in the axial direction on the surface of the specimen takes maximum values at the center and the edge of the interface.

A Study on the Residual Stress and Fracture Behavior of Pipeline Girth Welds Joining Pipes of Different Strength

2010 ◽  
Author(s):  
Woo-sik Kim ◽  
Jong-hyun Baek ◽  
Choel-man Kim ◽  
Young-pyo Kim
Keyword(s):  
Residual Stress ◽  
Stress Distribution ◽  
Material Property ◽  
Fracture Behavior ◽  
Residual Stress Distribution ◽  
Element Analysis ◽  
Weld Region ◽  
Similar Materials ◽  
Base Strength ◽  
Girth Welds

The following cases of girth welded region between pipelines having different base strength were considered. The pipeline shows different fracture behavior from girth welded pipeline between similar materials due to strength mismatch and residual stress distribution. Investigation about the residual stress distribution and fracture behavior of pipeline having girth welds of the differnet base metals (X70/X65 and X70/X42) with different material property has performed using finite element analysis. The effect of mismatched material property on girth weld region is negligible when shape of pipeline is similar. The assessment for occurance of crack on girth weld region with pipes with material property mismatched can be replaced by that of the similar pipes with low strength on the point view of conservation.

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