MIG dissimilar metal welding simulation - Investigation of different joint effects by finite element method

2018 ◽  
Author(s):  
H. Jaafar ◽  
M. H. M. Radzi ◽  
L. Tajul ◽  
M. D. Azaman ◽  
M. Zamzuri
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Welding Simulation ◽  
Joint Effects ◽  
Dissimilar Metal ◽  
Dissimilar Metal Welding ◽  
Metal Welding ◽  
Element Method

scholarly journals In-Service Welding Simulation of 28” Pipeline Using Finite Element Method

2019 ◽  
Vol 694 ◽  
pp. 012028
Author(s):  
Sahrudin Tambunan ◽  
Ardiyansyah Yatim ◽  
Putu Wira Sanjaya ◽  
P H Michael Simon
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Welding Simulation ◽  
Element Method

Residual Stress Prediction in Dissimilar Metal Weld Pipe Joints Using the Finite Element Method

2005 ◽  
Vol 490-491 ◽  
pp. 53-61 ◽  
Author(s):  
Dimitrios Elias Katsareas ◽  
Anastasius Youtsos
Keyword(s):  
Finite Element Method ◽  
Residual Stress ◽  
Finite Element ◽  
Residual Stresses ◽  
The Finite Element Method ◽  
Dissimilar Metal ◽  
Stress Prediction ◽  
Dissimilar Metal Weld ◽  
Metal Weld ◽  
Element Method

Dissimilar metal welds are commonly found in the primary piping of pressurized water nuclear reactor power plants. The safety assessment practice for such welds requires residual stresses to be taken into consideration. In the present paper the finite element method is utilized for the simulation of the welding process and prediction of the residual stress field in a dissimilar metal weld pipe joint. Although it is common practice to develop in-house finite element codes for weld simulation, the ANSYS commercial finite element code is selected. This is mainly due to the fact that industry focuses on commercial software, since residual stress analysis procedures based on them can be readily transferred to industrial applications. A simplified 2-D axi-symmetric model, in which residual stresses are produced due to the thermo-mechanical properties mismatch during cooling of the weld, is compared with a detailed model in which the complete multi-pass welding procedure is simulated. The latter incorporates the “birth & death of elements” technique, temperature dependant material properties and kinematic hardening material behavior. The aim of this comparison is to establish the degree of model detail and complexity, necessary to obtain satisfactory results and consequently to define a golden rule between computational cost and practically accurate predictions. Identifying the specific simulation parameters and variables, that have the highest impact on the accuracy of the computed results, is also important. It is concluded that, a bead-by-bead or lump-by-lump detailed simulation is necessary in order to obtain reasonably accurate residual stresses that cannot be predicted by a simplified model. A general conclusion is that the proposed method, being simple in implementation and cost effective concerning model complexity and analysis time, is a potential weld residual stress prediction tool.

Simulation of tuning graphene plasmonic behaviors by ferroelectric domains for self-driven infrared photodetector applications

Nanoscale ◽  
2019 ◽  
Vol 11 (43) ◽  
pp. 20868-20875 ◽  
Author(s):  
Junxiong Guo ◽  
Yu Liu ◽  
Yuan Lin ◽  
Yu Tian ◽  
Jinxing Zhang ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Interfacial Effect ◽  
Infrared Photodetector ◽  
The Finite Element Method ◽  
Ferroelectric Domains ◽  
Element Method

We propose a graphene plasmonic infrared photodetector tuned by ferroelectric domains and investigate the interfacial effect using the finite element method.

Sign in / Sign up

Export Citation Format

Share Document