Challenge

Week 6 - Creating connection for Rear door

Aim:

To perform the connections of the rear door of the car with different connection techniques.

PROCEDURE:-

  • Extract the file (Rear door) to ANSA.

  • Set seperate PID's for different spot welding parts.

FOR HOLES : Use Bolt type Connections.

  • For this type of connection, give a COG points to the holes that need to be connected.
  • Convert the COG point to a bolt.
  • Use the connection manager and connect the parts by selecting BOLT FEATURE.
  • Create ZONE CUT for bolt holes with the washer element around the hole which is not connected to many parts.
  • TYPE OF CONNECTION used - RBE2 connections.
  • NASTRAN MODULE>ELEMENTS>RBE2>MANY NODES can be used to create a cluster element for bolt holes when there are no different properties defined to parts.

FOR DOOR HINGE CONNECTION :

  • Create RBE2 cluster elements in order to make the movement of rear door towards one direction.
  • Delete the sixth degree of freedom under NASTRAN>ELEMENT>INFO. (Select only 1 2 3 4 5 ).

For connections involved in SPOT WELDING :

  • Select the nodes and convert it into spot weld point.
  • RBE3-HEXA-RBE3 is the representation for spot welding

HANDLE CONNECTION for door:

Handle connections are made using RBE2 elements along with CONMi>CONM2>NODES in order to give mass representation of the handle in tonnes.

CONNECTION FOR WINDOWS :

  • Create curve around the perimeter of the window.
  • Transform them into spot lines.
  • Select the lines after opening CONNECTIONS MANAGER RBE3-CBUSH-RBE3 is used to represent Window Connections because windows are connected with soft bush to absorb shocks and an off-set is provided at the bottom part of the window for weather beeding.
  • Assign parts for connections of CBUSH elements.
  • Repeat this procedure for fixed window.
  • Change the co-ordinate to 0 in CBush Properties so it gets globally aligned towards one direction.

FINAL PART :

CONCLUSION:

  • Rigid body element are connected firmly.
  • Spot welding connections are made for permanent fixing.
  • CBUSH element are realized.
  • Mass of Handle is assigned in terms of tonnage.
  • Degree of freedom assigned for hinges.
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