Challenge

Week 6

Creating connections on rear door using ANSA.

Aim:

To create necessary connections on the FE model of rear door using ANSA.

Procedure:

The given FE model of rear door was imported to ANSA is as shown in fig.1

Fig.1. FE model of rear door.

The model was evaluated for necessary connections.
Zone cut is created at the appropriate regions in the model is as shown in fig. 2

Fig.2. Zone cut on FE model

To make rigid connections at the holes, RBE2 many node option was used under Nastran deck

Fig.3. RBE2 many node cluster connections of holes.

To create connections at the hinges the rotational movement along z axis was not constrained is as shown in fig.4

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Fig.4. Connection at door hinge.

The door handle connection is created by using RBE2 many node options is as shown in fig.5

Fig.5. Connection at door handle.

The weight of handle is inputed in tonnes using option CONMi>>CONM2>>nodes is as shown in fig.6

Fig.6. Input parameters of con mass connection

RBE3-cbush-RBE3 connection option is used to create the connections of weather strips between the glass and frame.
To create RBE3-cbush-RBE3 the edge of the glass is selected and converted to curve.
The curve is converted into spot lines is as shown in fig.7

Fig.7. Spot line creation for generating cbush connection

The details of the connections are entered in the connections manager and the connection is realized as shown in fig.8.

Fig.8. Input parameters for cbush connection.

The cbush generated is having local coordinates, in order to align it with global coordinate the CID value is changed to 0 in the property card of cbush is as shown in fig. 9.

Fig.9. Input parameters for cbush alignment to global coordinates.

Fig.10. FE model with necessary connection.

Learning Outcomes:

Learned to identify different types of connections and input appropriate values to create the connections.
Learned to use different connection tools under Nastran deck.

Conclusion:

Ship work like this
in your own course.