*createexoskeletonlattice

Syntax

*createexoskeletonlattice entity_type option1=<value1> option2=<value2> ... optionN=<valueN>

Type

HyperMesh Tcl Modify Command

Description

Creates a skeleton of beams that attaches to either topology results or a donor model.

Inputs

entity_type

The entity type on which the exoskeleton will be created. Valid values are elements and components.

markid=<mark_id>

The ID of the mark containing the input entities. Valid values are 1 and 2.

nodemarkid=<mark_id>

The ID of the mark containing the nodes considered as hardpoints to which the exoskeleton should be connected. Valid values are 1 and 2.

exoskeletonsize=<value>

The size of the exoskeleton grid to create the lattice.

radius=<value>

The search radius multiplier. Recommended value is 2.0.

minelemsize=<value>

The minimum element size of the 1D elements created during the process.

tol=<value>

The tolerance value. Recommended value is 0.4.

matid=<value>

The ID of the material to be associated with the 1D elements created.

symmetryid=<value>

The ID of the symmetry plane along which the exoskeleton should be duplicated and reflected.

desvaropt=<value>

The design variable option to be considered for creating the lattice. Valid values are topology and size.

designopt=<value>

Determines whether the exoskeleton should be tightly or loosely coupled with the underlying FE. Valid values are tight and loose.

filepath=<value>

The include path where the new variables will be stored.

Examples

To create an exoskeleton on all the components in the model with the selected hardpoints:

*createmark comps 1 all
*createmark nodes 2 2467 2589
*createexoskeletonlattice comps markid=1 nodemarkid=2 exoskeletonsize=100 radius=2 matid=4 symmetryid=1 desvaropt=topology designopt=tight

Errors

if { [ catch {command_name...} ] } {
   # Handle error
}

Version History

2022.3