Two-Way Radio User Manual

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TIE
19.5
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TIE: Define surface-based tie and cyclic symmetry constraints or coupled acoustic-
structural interactions.
This option is used to impose tie constraints, cyclic symmetry constraints, or coupled acoustic-structural
interactions between pairs of surfaces.
Products: ABAQUS/Standard ABAQUS/Explicit
Type: Model data
Level: Part, Part instance, Assembly
References:
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“Mesh tie constraints,” Section 28.3.1 of the ABA QUS Analysis User’s Manual
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“Defining elem ent-based surfaces,” Section 2.3.2 of the ABAQ US Analysis User’s Manual
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“Defining node-based surfaces,” Section 2.3.3 of the ABA QUS Analysis User’s Manual
•
“Analysis of m odels that exhibit cyclic symm etry,” Section 10.3.3 of the ABAQUS Analysis User ’s
Manual
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“Acoustic, shock, and coupled acoustic-structural analysis,” Section 6.9.1 of the ABAQUS A nalysis
User’s Manual
Required parameter:
NAME
Set this parameter equal to a label that will be used to refer to the constraint.
Optional, mutually exclusive parameters:
POSITION TOLERANCE
Set this param eter equal to a cutoff distance that is used to determine which nodes on the slave
surface are tied to the m aster surface. The calculation of the distance between the slave and master
surface for a particular s lave node depends on factors s uch as shell element thickne ss, the setting of
the TYPE parameter, and the types of surfaces involved. Slave nodes that do not satisfy the position
tolerance are not tied to the master surface. The default value for this tolerance distance is 5% of
the typical elem ent size in the master surface. If a node-based master surface is used, the default
tolerance distance is based on the average distance between nodes in the master surface.
TIED NSET
Set this parameter equal to the node set label of the node set that includes the nodes on the slave
surface that will be tied to the master surface. N odes not included in this node set will not be tied.
19.5–1
ABAQUS Version 6.1 Module:
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