edweld#
- Mapdl.edweld(option='', nweld='', n1='', n2='', sn='', ss='', expn='', exps='', epsf='', tfail='', nsw='', cid='', **kwargs)#
Defines a massless spotweld or generalized weld for use in an explicit
APDL Command: EDWELD dynamic analysis.
- Parameters:
- 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 fn and fs are normal and shear interface forces. Normal interface force fn 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.