**EDWELD**
**EDWELD**, `Option`

, `NWELD`

, `N1`

, `N2`

, `SN`

, `SS`

, `EXPN`

, `EXPS`

, `EPSF`

, `TFAIL`

, `NSW`

, `CID`

**Defines a massless spotweld or generalized weld for use in an
explicit dynamic analysis.**

**
**`Option`

Label identifying the option to be performed:

**ADD**
| — | Define a weld (default). This weld may be
a spotweld between two nodes or a generalized weld. A massless spotweld will
be defined if valid node numbers are specified in fields `N1` and `N2` .
A generalized weld will be defined if a node component is specified in field `N1` . |

**DELE**
| — | Delete specified weld. If `NWELD` is
blank, all welds are deleted. |

**LIST**
| — | List specified weld. If `NWELD` is
blank, all welds are listed. |

**
**`NWELD`

Reference number identifying the spotweld or generalized weld.

**
**`N1`

, `N2`

For a spotweld, `N1`

and `N2`

are
the nodes which are connected by the spotweld. For a generalized weld, input
a nodal component name in `N1`

and leave `N2`

blank.
The nodal component should contain all nodes that are to be included in the
generalized weld.

**
**`SN`

Normal force at spotweld failure.

**
**`SS`

Shear force at spotweld failure.

**
**`EXPN`

Exponent for normal spotweld force.

**
**`EXPS`

Exponent for shear spotweld force.

**
**`EPSF`

Effective plastic strain at ductile failure (used only for
a generalized weld).

**
**`TFAIL`

Failure time for constraint set (used only for a generalized
weld); default = 1.0e20.

**
**`NSW`

Number of spot welds for the generalized weld.

**
**`CID`

Coordinate system ID number (CID) to be used for output data
(used only for a generalized weld). The coordinate system must be previously
defined with the **EDLCS** command.

## Notes

This command can be used to define a massless spotweld between two nodes
or a generalized weld for a group of nodes. For a spotweld, the nodes specified
by `N1`

and `N2`

must not
be coincident. For a generalized weld, coincident nodes are permitted, but `CID`

must
be specified when using coincident nodes. **EDWELD** is not
updated after a node merge operation; therefore, node merging [**NUMMRG**,NODE]
should be done before any **EDWELD** definitions. Nodes connected
by a spotweld or generalized weld cannot be constrained in any other way.

Failure of the weld occurs when:

where f_{n} and f_{s} are normal
and shear interface forces. Normal interface force f_{n} is
nonzero for tensile values only.

You can graphically display spotwelds by issuing the command **/PBC**,WELD,,1.

This command is also valid in SOLUTION.

**Distributed ANSYS Restriction **This command is not supported in Distributed ANSYS.