Week 9 - Creating connection for Rear door

ABSTRACT:

The main objective of this challenge is to create connections for the given rear side door model and store them in separate PIDs using useful tools in ANSA.

PROCEDURE:

There are two steps to be followed for deploying the connections, they are

Creating new PIDs

Deploying connections.

Creating new PIDs:

The input FE model is opened using the command file--->open.

The whole side door is stored in a single PID and that is to be separated using there a command

Menubar --->modules--->faces--->set PID.

The purpose of creating PID is during the time of deploying connections the starting and ending points of the connections should be mentioned.

DEPLOYING CONNECTIONS:

For this component, connections like a bolt, spotweld, Cbush, and Rbe2 are used.

Bolt connections:

The function of bolt connection is to generate Bolt connections between two or more holes, either of shell or solid mesh. The user determines the element types for the Bolt's head, body, and nut, by selecting among the provided options. The specified elements of the head and the nut connect the center of the hole to the nodes of selected edges (or the selected nodes) while the body is created between the two centers of each hole.

The command for creating a bolt in the hole area is topo-->Points-->On COG option and select edges of the hole to create a point.

After Creating a point, menubar--->assembly--->convert--->3d points and select a point and a Bolt connection type.

Then the connection manager tab is opened by the command

assembly--->connection manager---->select the connection.

The above-mentioned tab named connections manager is opened. There the FE representation is selected as the bolt connection and options like search distance, zones, and DOF for the bolt connections are made.

The top left side of the tab contains the input components for the bolt connections named p1, p2, and p3 are selected. The maximum number of components for the input is up to p4. Finally, realise the connection.

The head and the nut are connected with the body of the bolt. Then repeated the same procedure for other entities in the model.

SpotWeld Connection :

The command for the spotweld connection is topo-->Points-->On COG option and select edge of the hole to create a point.

After Creating a point, Go to the Convert option and select a point and Select a Spot Weld Point connection type.

Go to the Connection option and Select the Spot Weld point and Click ok, Connection Manager window will open.

In the Connection Manager window, select the part to make a connection and set it as FE Rep type as RBE3-HEXA-RBE3, Search Distance as 20.

The status bar in the window shows all the details about the connections made on the selected entities.

The same procedure is followed for all other entities where the spotweld connections are needed.

CBUSH Connection :

Go to topo-->curves-->cons2curve option and select the edges and create a curve.

After creating a curve, Go to the Convert-->curves option and select a curve and convert to Spot line.

Go to the Assembly--->connections manager option Select the Spot Weld point and Click ok, Connection Manager window will open.

In the Connection Manager window, select the part to make a connection and set it as FE Rep type as RBE3-CBUSH-RBE3, Search Distance as 50, and Select Keep all

In the Connection Manager window, Create a PBUSH ID and assign the values for the property.

After setting all in the Connection Manager window, click Apply & Realize.

After creating a CBUSH, Open the CBUSH window from Database and convert Orient as with Cord & CID as 0 for all CBUSH. The length of the element in the cbush is about 7mm each. Finally, CBUSH will be created along with the Global axis.

RBE2 Connection :

Connecting all other parts by using an RBE2 connection.

Go to NASTRAN DECKS-->Elements-->RBE2-->Many nodes Option and select the nodes and Create an RBE2 connection.

FINAL MODEL WITH CONNECTIONS:

CONCLUSION:

The given component is deployed with the suitable connections and realized the deployed connections successfully in the entities. Different methods are used to create a simple connection and the whole component is connected with the suitable connection types.