Edge-to-Surface Gluing (Simcenter Nastran)

Use Edge-to-Surface Gluing to connect an edge to a surface to prevent relative motion in all directions. A Simcenter Nastran glue connection is a simple and effective method to join dissimilar meshes.

Note:

The nodes on the glued edges and surfaces do not need to be coincident.

The glue connection correctly transfers displacement and loads, which results in an accurate strain and stress condition at the interface.

When you solve your model, Simcenter Nastran internally generates glue elements between the specified edge and surface. Glue elements are stiff springs that connect and constrain the edges and surfaces. Simcenter Nastran always uses a weld-like formulation to create the connection. This corresponds to the GLUETYPE=2 option on the BGPARM bulk data entry.

Defining the source and target regions with a Simulation Region

To glue an edge to a surface, you must first define the source and target regions for the glue definition. A region is a collection of element edges or free faces in a section of the model where you expect gluing or contact to occur. You use the Simulation Region command to define the regions affected by the glue condition.

• You can select the edges of the following types of 2D elements to define the edge for the source region: CTRIA3, CTRIA6, CTRIAR, CQUAD4, CQUAD8, and CQUADR.

• You can select either 2D elements (CTRIA3, CTRIA6, CTRIAR, CQUAD4, CQUAD8, and CQUADR) or the faces of certain 3D elements (CHEXA, CPENTA, CPYRAM, and CTETRA) to define the surface for the target region.

Supported analysis types

The Edge-to-Surface Gluing command is available in all structural Simcenter Nastran solution sequences except for SOL 601 and 701. It is not supported in axisymmetric solutions.

Using a Glue Parameters modeling object to control the glue algorithm

If you include an Edge-to-Surface Gluing simulation object in your solution, you can use the options in the Glue Parameters dialog box to locally override the Simcenter Nastran global glue parameters. These options correspond to the fields on the BGPARM bulk data entry. You can also use the Edge-to-Surface Glue Stiffness Distribution on Glued Surface option to change how the glue stiffness is distributed on the surface being glued.

Note:

Only the Penalty Factor and Penalty Factor Units options in the Glue Parameters dialog box are applicable to Edge-to-Surface Gluing definitions. Simcenter Nastran ignores all other options.

For more information, see Glue Parameters overview and Controlling the stiffness of edge-to-surface glue (Simcenter Nastran)..

Associated Simcenter Nastran syntax

When you solve or export your model:

• The options in the Edge-to-Surface Gluing dialog box define a BGSET bulk data entry in your Simcenter Nastran input file.

• The options in the Region dialog box define a BEDGE bulk data entry for the source (edge) region and a BSURF or BSURFS entry for the target (surface) region.

Additional information

For more information, see:

• BGSET, BEDGE, and BSURF or BSURFS in the Simcenter Nastran Quick Reference Guide

• Gluing Elements in the Simcenter Nastran User’s Guide

Where do I find it?

Application	Pre/Post
Prerequisite	An active Simulation file with Simcenter Nastran as the specified solver environment and structural as the analysis type
Command Finder	Edge-to-Surface Gluing
Simulation Navigator	Right-click Simulation Objects→New Simulation Object→Edge-to-Surface Gluing

How do I

Define surface-to-surface contact

Define surface-to-surface gluing (Simcenter Nastran)

Define edge-to-surface gluing

Create an axisymmetric nonlinear contact

Learn more

Contact and glue overview (Simcenter Nastran, Simcenter 3D Multiphysics)

Defining parameters for contact conditions (Simcenter Nastran)

Defining parameters for glue conditions

Previewing contact and glue element locations (Simcenter Nastran)

Surface-to-Surface Contact (Simcenter Nastran, Simcenter 3D Multiphysics, Abaqus, ANSYS)

Surface-to-surface gluing (Simcenter Nastran, Simcenter 3D Multiphysics)

Edge-to-Edge Contact (Simcenter Nastran, Simcenter 3D Multiphysics)

Internal edges for source and target regions

Controlling the stiffness of edge-to-surface glue (Simcenter Nastran)

Edge-to-Edge Gluing (Simcenter Nastran, Simcenter 3D Multiphysics)

Advanced nonlinear contact for axisymmetric elements (Simcenter Nastran)

Automatic face pairing

Quick links

Command reference

Pre/Post video examples

Bulk Entry Descriptions

Simcenter 3D tutorials

Browse Simcenter 3D help by product area

Edge-to-Surface Gluing (Simcenter Nastran), Simcenter 3D 2021.1 Series

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