Numerical Simulation of In-Service Welding of a Pressurized Pipeline

2006 ◽  
Vol 129 (1) ◽  
pp. 66-72 ◽  
Author(s):  
XiaoLong Xue ◽  
ZhiFu Sang ◽  
JiaGui Zhu ◽  
G. E. O. Widera
Keyword(s):  
Numerical Simulation ◽  
Finite Element Method ◽  
Temperature Field ◽  
Stress Distribution ◽  
Axial Stress ◽  
The Finite Element Method ◽  
Heat Effects ◽  
Inner Surface ◽  
Axial Stress Distribution ◽  
Flow Case

The temperature field and stress distribution for in-service welding of a flowing media, pressurized pipeline are simulated by use of the finite element method (FEM). In order to investigate the effect of flowing media on the temperature field of in-service welding, the results are compared with those of a no-flow case. It is found that the flowing media took away most of the heat effects from welding. The cooling is accelerated and the peak temperature of the inner surface of the pipe is much lower than that of the no-flow case. An experiment was performed to verify the accuracy of the numerical model. The presence of internal pressure, i.e., flowing media, in the pipeline significantly affects the postcooling axial stress distribution.

Measurement and Numerical Simulation of Deformation of Pre-Stressed Masonry

2015 ◽  
Vol 749 ◽  
pp. 398-405
Author(s):  
Marie Kozielova
Keyword(s):  
Numerical Simulation ◽  
Finite Element Method ◽  
Experimental Testing ◽  
Simple Procedure ◽  
Axial Stress ◽  
Masonry Structure ◽  
Vertical Load ◽  
Laboratory Measurements ◽  
The Finite Element Method ◽  
Laboratory Equipment

Contribution deals with laboratory measurements of deformations in the place exposed to local load caused by additional pre-stressing and its comparison with numerical simulation. The measurements are made at the masonry brick corner built in the laboratory equipment. The laboratory equipment was designed at Faculty of Civil Engineering VŠB – TU Ostrava for measurement tri-axial stress-strain conditions in masonry. The masonry structure of the brick corner is imposed on the vertical load and pre-stress is applied through two bars. The values of deformation from pre-stressing are sensed by potentiometer sensors. Numerical simulation of the brick corner is based on the finite element method using appropriate software and then the results are compared with those of experimental testing. For numerical simulation were used material linearity and material non-linearity of model. On the basis of these results it should be possible to improve the models and come closer to achieving an accurate and at the same time, simple procedure for the design of pre-stressed masonry.

The Finite Element Numerical Simulation of the Temperature Distribution of the Glass that under the Irradiation of Laser

2013 ◽  
Vol 791-793 ◽  
pp. 411-414
Author(s):  
Tuan Jie Liu ◽  
Ning Shan ◽  
Yong Zhong Ma
Keyword(s):  
Numerical Simulation ◽  
Finite Element Method ◽  
Finite Element ◽  
Temperature Field ◽  
Temperature Distribution ◽  
Interaction Mechanism ◽  
The Finite Element Method ◽  
Co Laser ◽  
Action Time ◽  
Finite Element Numerical Simulation

The temperature field is an important aspect to study the interaction mechanism between the laser and glass. The temperature distribution on the surface of the glass that illuminated by the CO laser is numerical simulated by using the finite element method. The change of the temperature field of the target, irradiated by the laser in different time or different power, is simulated respectively, get the curve of the temperature field which reflects the temperature at the center spot changing with the action time and power.

The study of the elastic deformation of a flexible wheel by a cam wave generator

2020 ◽  
Vol 65 (1) ◽  
pp. 51-58
Author(s):  
Sava Ianici
Keyword(s):  
Numerical Simulation ◽  
Finite Element Method ◽  
Finite Element ◽  
Elastic Deformation ◽  
Theoretical Study ◽  
Elastic Field ◽  
The Finite Element Method ◽  
Elastic Deformations ◽  
Wave Generator ◽  
Two Stages

The paper presents the results of research on the study of the elastic deformation of a flexible wheel from a double harmonic transmission, under the action of a cam wave generator. Knowing exactly how the flexible wheel is deformed is important in correctly establishing the geometric parameters of the wheels teeth, allowing a better understanding and appreciation of the specific conditions of harmonic gearings in the two stages of the transmission. The veracity of the results of this theoretical study on the calculation of elastic deformations and displacements of points located on the average fiber of the flexible wheel was subsequently verified and confirmed by numerical simulation of the flexible wheel, in the elastic field, using the finite element method from SolidWorks Simulation.

scholarly journals Experimental Investigation of Steel Plate Shear Walls under Shear-Compression Interaction

2019 ◽  
Vol 2019 ◽  
pp. 1-11
Author(s):  
Yang Lv ◽  
Ling Li ◽  
Di Wu ◽  
Bo Zhong ◽  
Yu Chen ◽  
...  
Keyword(s):  
Stress Distribution ◽  
Steel Plate ◽  
Axial Stress ◽  
Shear Walls ◽  
Shear Capacity ◽  
Steel Plate Shear Walls ◽  
Steel Plate Shear Wall ◽  
Gravity Load ◽  
Moment Resisting ◽  
Axial Stress Distribution

Four scaled one-storey single-bay steel plate shear wall (SPSW) specimens with unstiffened panels were tested to determine their behaviour under cyclic loadings. The shear walls had moment-resisting beam-to-column connections. Four different vertical loads, i.e., 300 kN, 600 kN, 900 kN, and 1200 kN, representing the gravity load of the upper storeys were applied at the top of the boundary columns through a force distribution beam. A horizontal cyclic load was then applied at the top of the specimens. The specimen behaviour, envelope curves, axial stress distribution of the infill steel plate, and shear capacity were analyzed. The axial stress distribution and envelope curves were compared with the values predicted using an analytical model available in the literature.

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