Challenge

Creation of 1D Connectors

AIM:

To understand types of connections and deploy suitable connectors as per the requirement.

OBJECTIVES OF THE PROJECT:

To understand the different types of connectors in HYPERMESH.
To deploy rigid, seam weld, spot weld, bolt spot with rigid, spot with spring connections.
To practice the connectors tools on the component provided.
To realize the connections.

PROCEDURE:

First step is go to FILE > IMPORT > MODEL > OPEN > BROWSE > IMPORT to import the geometry.
Then, go to PREFEERENCES > CRIERIA SETTINGS > 2D and enter the following values-

Target Element Length = 5

Aspect ratio = 5

Skewness = 45

Warping = 15

Taper = 0.5

Min length = 2

Max length = 8

Min angle Quad = 45

Max angle Quad = 135

Min angle tria = 30

Max angle tria = 110

Tria % = 15

This will set the criteria values for the mesh elements.
Then go to 2D > AUTOMESH > SURFS > DISPLAYED > ELEMENT SIZE = 5 > ELEMENT TYPE > MESH.
This will deploy the mesh on the component surface.
Now, for creating connectors go to, 1D > CONNECTORS > SEAM > NODEPATH > SPACING = 5 > RETAIN NODES > COMPONENTS > TOLERANCE = 10 > TYPE = SEAM-QUAD (ANGLED+CAPPED+L) > CREATE. This will create seam connection.
For creating quad connections, go to 1D > CONNECTORS > SEAM > NODEPATH > SPACING = 5 > RETAIN NODES > COMPONENTS > TOLERANCE = 10 > TYPE = QUADS > CREATE.
For creating spot weld connections, go to 1D > CONNECTORS > SPOT > NODEPATH > COMPONENTS > NUM LAYERS = 2 > TOLERANCE = 10 > TYPE = RIGID > DIAMETER = 5 > CREATE.
For creating HEXA (Adhesive) connection, go to 1D > CONNECTORS > SEAM > NODEPATH > SPACING = 5 > RETAIN NODES > COMPONENTS > TOLERANCE = 10 > TYPE = HEXA (ADHESIVE) > CREATE.
For creating bolt connection go to, 1D > CONNECTORS > BOLT > NODES > COMPONENTS > NUM LAYERS = 2 > TOLERANCE = 10 > TYPE = BOLT (GENERAL) > CREATE. The representation of spring elements is by RBE2.

For creating spot weld with rigid elements, go to 1D > SPOTWELD > USING NODES > ELEM CONFIG = RIGID > INDEP NODE > DEP NODE. The representation of spring elements is by RBAR.
For creating spot weld with spring elements, go to 1D > SPOTWELD > USING NODES > ELEM CONFIG = SPRING > INDEP NODE > DEP NODE. The representation of spring elements is by CELAS.