Modeling and Grouping of Multipass Welding Sequence
The full model has the same welding sequence of the real welding specimen.
There are asymmetry residual stresses near final welding pass due to the welding sequence in Figure 7(a).
The left/right stresses around the weld center were shown separately in order to examine the difference by the welding sequence. The results of neutron diffraction method were compared with those of thermal elastoplastic FE analysis.
Smith, "Effect of welding sequence
on residual stress and distortion in flat-bar stiffened plates," Marine Structures, vol.
From the thermal history it can be seen that the thermal waves follow the welding sequence
. The peak temperature decreases with time as the distance between the measurement point and the weld centre line increases.
The AWS (2006) recommended welding sequence
instructors teach individuals in an entry-level course shielded metal arc welding (SMAW) followed by gas metal arc welding (GMAW).
As described later, this method allows changing tube profile, welded joint geometry, welding sequence
, and material properties.
During development of a new profile, the software allows the programmer to step through the cycle not only to ensure collision-free operation, but also to optimize the welding sequence
to ensure the shortest cycle time.
(2) An optimum welding sequence
and welding manner were designed to decrease the welding residual stress.
--run the welding of wire netting frame, as defined in the instructions for welding sequence
Effect of welding sequences
on residual stresses, Computers and Structures 81(5): 273-286.