Numerical Simulation and Experiment Analysis of MIG Welding for Aluminum Alloy Extrusion

2012 ◽  
Vol 430-432 ◽  
pp. 1311-1314
Author(s):  
Zheng Zhi Luo ◽  
Yi Su Pan
Keyword(s):  
Numerical Simulation ◽  
Aluminum Alloy ◽  
Three Dimensional ◽  
Welding Process ◽  
Element Model ◽  
Mig Welding ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element ◽  
Welding Processes ◽  
Aluminum Alloy Extrusion

Welding characteristics of MIG welding for aluminum alloy extrusions are studied. In this article, the aluminum alloy is EN AW-6005A. The welding heat source and the welding processing of aluminum alloy extrusions are discussed. A three dimensional finite element model has been developed to dynamically simulate the welding process. The investigations focus on the comparison the welding heat resource of simulation and section of the experiments parts. And the residual stress of numerical simulation and tests are compared. It’s help to optimize the MIG welding processes and improve the welding quality for aluminum alloy extrusion.

scholarly journals FATIGUE LIFE ESTIMATION OF A BUTT WELDED JOINT BY S-N APPROACH

2012 ◽  
pp. 95-99
Author(s):  
VINOD M. BANSODE ◽  
N.D. MISAL
Keyword(s):  
Fatigue Life ◽  
Fatigue Testing ◽  
Three Dimensional ◽  
Welding Process ◽  
Life Time ◽  
Element Model ◽  
Simulation Software ◽  
Surface Machining ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element

A failure analysis based on stress life approach may be useful for predicting the life time of weld in the structure. This study presents an upcoming methodology in new three dimensional Finite Element Model to calculate the fatigue life of weld. Ansys 12.1 simulation software uses stress-life method, based on a static non-linear Structural analysis. The weld material S-N curve were experimentally determined by the Fatigue testing of the dumbell specimen as per 7608 standard. This study assumes that a flaw exist in weld due to welding process, material in-homogeneity, air voids, slugs or impurities in weld, improper surface machining and many more. This material curve is used in simulation to get more accurate results. Thus the fatigue life prediction with the material curves from experimentation will give us more accurate and close to actual failure results.

3D Numerical Simulation and Experimental Analysis of Spillway Tunnel

2015 ◽  
Vol 723 ◽  
pp. 171-175
Author(s):  
Hai Yan Huang ◽  
Ai Min Gong ◽  
Yong Qiu ◽  
Zen An Wangliang
Keyword(s):  
Numerical Simulation ◽  
Water Pressure ◽  
Three Dimensional ◽  
Element Model ◽  
Test Method ◽  
Jet Trajectory ◽  
Dimensional Finite Element ◽  
Velocity Changes ◽  
Spillway Tunnel ◽  
Three Dimensional Finite Element

A three-dimensional finite element model and an experimental model of a reservoir spillway tunnel are used to analyze the flow velocity changes. The basic numerical simulation theory and the experimental theory and method are firstly introduced. The water characteristic is obtained such as velocity, water surface curve, jet trajectory length, water pressure, etc. The water jet is Z shaped. The velocity, pressure and water flow of the whole spillway are gotten in Ansys software. The velocity measured in the test and the data computed with software are compared. The experimental results are agreement with the numerical results. The analysis and experimental progress and results show that the numerical model and the test method are feasible and well-suited for using in actual design problems.

The 3D Numerical Simulation and Settlement Control Study for City Tunnel Crossing High Fill Geological Area of Gravelly Soils

2012 ◽  
Vol 256-259 ◽  
pp. 1235-1242
Author(s):  
Qian Dong ◽  
Hong Yu Wan ◽  
Fan Lin Kong ◽  
Bao Yun Zhao
Keyword(s):  
Numerical Simulation ◽  
Simulation Analysis ◽  
Three Dimensional ◽  
Element Model ◽  
3D Numerical Simulation ◽  
Gravelly Soil ◽  
Dimensional Finite Element ◽  
Set Up ◽  
Three Dimensional Finite Element ◽  
Technical Measures

Three-dimensional finite element model of tunnel-soil-structures interaction was set up to analyze the causes of settlement and structural cracking when tunnel crossing complex gravelly soil area. It simulated the real tunnel excavation process of Chongqing Metro Line 3. Based on analysis and monitoring results, improved technical measures were used to control settlement, such as advance strengthening, excavation speed control and so on. The latest monitoring results indicate that vault and ground settlement are controlled, and convergence value is reduced significantly. The 3D numerical simulation analysis method provides reference for similar projects, and improvement of technical measures is conducive to settlement control.

Assessment of the Influence of Welding Parameters on Distortion

2014 ◽  
Vol 597 ◽  
pp. 208-212
Author(s):  
Fábio Renck Locatelli ◽  
Walter Jesus Paucar Casas ◽  
Ricardo Frederico Leuck Filho
Keyword(s):  
Welding Speed ◽  
Three Dimensional ◽  
Welding Process ◽  
Physical And Mechanical Properties ◽  
Element Model ◽  
Welding Parameters ◽  
Welding Sequence ◽  
Dimensional Finite Element ◽  
Definition Of ◽  
Three Dimensional Finite Element

The welding involves the transfer of high localized heat flow, which results in residual stresses in the welded body. The impossibility of relieving these stresses generates welding distortions that become a problem in dimensional setting of welded structures. This study aims to evaluate the influence of some parameters in the welding process in a T-type joint. Due to the complexity of the welded joint and the deposition rate, a three-dimensional finite element model was developed for the solution of the temperature field and distortions. The transient thermal analysis used the Goldak equation for definition of the heat flux transferred to the part. The nonlinear characteristics of the phenomenon as well as the dependence of physical and mechanical properties with the temperature were considered in this work. The parameters studied were the welding speed, welding sequence and cooling time between weld beads. The results suggest that the higher welding speed, the welding sequence forward and back and with cooling interval between beads present themselves as the best parameters for welding with lower distortions.

Numerical Simulation of Welding for Vice-Frame Components

2010 ◽  
Vol 160-162 ◽  
pp. 220-225 ◽  
Author(s):  
Zheng Zhi Luo ◽  
Yi Su Pan
Keyword(s):  
Three Dimensional ◽  
Welding Process ◽  
Side Wall ◽  
Element Model ◽  
Simulation Method ◽  
Front Wall ◽  
Complex Structures ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element ◽  
Good Agreement

In this article the application possibilities of welding simulation for vice-frame components are discussed. A three dimensional finite element model has been developed to dynamically simulate the welding process. The investigations focus on the simulation of the model construction and the welding effect on distortions and its stress. Comparisons of experimental and numerical results show good agreement and that the simulation method is reasonable. The vice-frame is a casting component that comes from a goods wagon bogie. So the procedure of the vice-frame simulation can be used for more complex structures like the side-wall, front-wall, roof, floor plate, and so on. It can help that optimize the welding process and improve the welding quality.

Finite Element Analysis of Nonuniformity of Tires with Imperfections5

2007 ◽  
Vol 35 (3) ◽  
pp. 226-238 ◽  
Author(s):  
K. M. Jeong ◽  
K. W. Kim ◽  
H. G. Beom ◽  
J. U. Park
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Three Dimensional ◽  
Element Model ◽  
Radial Force ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Dimensional Finite Element ◽  
Force Variation ◽  
Three Dimensional Finite Element

Abstract The effects of variations in stiffness and geometry on the nonuniformity of tires are investigated by using the finite element analysis. In order to evaluate tire uniformity, a three-dimensional finite element model of the tire with imperfections is developed. This paper considers how imperfections, such as variations in stiffness or geometry and run-out, contribute to detrimental effects on tire nonuniformity. It is found that the radial force variation of a tire with imperfections depends strongly on the geometrical variations of the tire.

scholarly journals Internal Force on and Deformation of Steel Assembled Supporting Structure of Foundation Pit under Thermal Stress

2021 ◽  
Vol 11 (5) ◽  
pp. 2225
Author(s):  
Fu Wang ◽  
Guijun Shi ◽  
Wenbo Zhai ◽  
Bin Li ◽  
Chao Zhang ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Bending Moment ◽  
High Strength ◽  
Element Model ◽  
Internal Force ◽  
Foundation Pit ◽  
Dimensional Finite Element ◽  
Influence Of Temperature On ◽  
Scale Experiment ◽  
Three Dimensional Finite Element

The steel assembled support structure of a foundation pit can be assembled easily with high strength and recycling value. Steel’s performance is significantly affected by the surrounding temperature due to its temperature sensitivity. Here, a full-scale experiment was conducted to study the influence of temperature on the internal force and deformation of supporting structures, and a three-dimensional finite element model was established for comparative analysis. The test results showed that under the temperature effect, the deformation of the central retaining pile was composed of rigid rotation and flexural deformation, while the adjacent pile of central retaining pile only experienced flexural deformation. The stress on the retaining pile crown changed little, while more stress accumulated at the bottom. Compared with the crown beam and waist beam 2, the stress on waist beam 1 was significantly affected by the temperature and increased by about 0.70 MPa/°C. Meanwhile, the stress of the rigid panel was greatly affected by the temperature, increasing 78% and 82% when the temperature increased by 15 °C on rigid panel 1 and rigid panel 2, respectively. The comparative simulation results indicated that the bending moment and shear strength of pile 1 were markedly affected by the temperature, but pile 2 and pile 3 were basically stable. Lastly, as the temperature varied, waist beam 2 had the largest change in the deflection, followed by waist beam 1; the crown beam experienced the smallest change in the deflection.

Process Modeling in Laser Deposition of Multilayer SS410 Steel

2007 ◽  
Vol 129 (6) ◽  
pp. 1028-1034 ◽  
Author(s):  
Liang Wang ◽  
Sergio Felicelli
Keyword(s):  
Phase Transformation ◽  
Temperature Distribution ◽  
Three Dimensional ◽  
Element Model ◽  
Traverse Speed ◽  
Processing Parameters ◽  
Dimensional Finite Element ◽  
Net Shaping ◽  
Three Dimensional Finite Element ◽  
Continuous Cooling Transformation Diagram

A three-dimensional finite element model was developed to predict the temperature distribution and phase transformation in deposited stainless steel 410 (SS410) during the Laser Engineered Net Shaping (LENS™) rapid fabrication process. The development of the model was carried out using the SYSWELD software package. The model calculates the evolution of temperature in the part during the fabrication of a SS410 plate. The metallurgical transformations are taken into account using the temperature-dependent material properties and the continuous cooling transformation diagram. The ferritic and martensitic transformation as well as austenitization and tempering of martensite are considered. The influence of processing parameters such as laser power and traverse speed on the phase transformation and the consequent hardness are analyzed. The potential presence of porosity due to lack of fusion is also discussed. The results show that the temperature distribution, the microstructure, and hardness in the final part depend significantly on the processing parameters.

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