Commands list

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WELD

Mesh commands

*WELD
nsid, stype, pid, nseg, $a$, $roff$

Parameter definition

Variable
Description
nsid
ID of node set defining weld path
stype
Weld cross section discretization
options:
1 $\rightarrow$ 1 triangle
2 $\rightarrow$ 3 quads
3 $\rightarrow$ 1 quad
pid
Part ID of generated weld mesh
nseg
Number of elements along weld path
default: Same discretization as the weld path
$a$
Weld thickness (a-value)
$roff$
Weld root offset

Description

This command is used to generate the mesh of a weld seam. The solver terminates immediately after outputting the generated grid to the file weld.k. The weld seam is to be connected to the welded parts with the MERGE command. The mechanical properties in the heat affected zone (HAZ) can be accounted for by importing results from WeldSim (TM) through the command INITIAL_STATE_WELDSIM, or by manually defing properties through INITIAL_STATE_HAZ. Note that a weld root offset ($roff > 0$) requires a 1-quad section (stype = 3). The 1-quad section is not allowed if $roff = 0$.

Example

Weld 1

The commands below define two simple weld seams that are stored in weld.k under part ID's 10 and 11.

*WELD 1, 2, 10, 8, 5.0e-3 *WELD 2, 3, 11, 0, 5.0e-3, 1.0e-3 *SET_NODE 1 133, 143 *SET_NODE 2 181, 183, 185, 187, 189, 191
Two weld lines
Two weld lines
Weld 2

The weld geometry in weld.k can be merged with the original input using the INCLUDE command.

*INCLUDE weld.k *MERGE "welds to plates" PS, 2, PS, 1 *SET_PART 1 1, 2, 3 *SET_PART 2 10, 11
The generated weld seams merged with the original geometry
The generated weld seams merged with the original geometry