Seat Deformer

Purpose:

Use this interface to deform the seat of a vehicle after a dummy has been positioned in its correct location. The nodes on the surface of the seat which are penetrating the dummy will be moved out of penetration in the press down direction. The nodes in the interior of the seat will be moved such that interior elements will be smoothly deformed. Existing contact definitions between the seat and the dummy will automatically be used when removing penetrations.

Sample:

Use dummyseat.k to try out the functionality. The seat model has been developed by The National Crash Analysis Center (NCAC) of The George Washington University under a contract with the FHWA and NHTSA of the US DOT.

Dialog:

  • Dummy Parts: Pick parts in the dummy that are penetrating the seat.

  • Seat Deform Parts: Pick parts in the seat to be deformed.

  • Seat Contact Parts: Pick parts in the seat to be used in the contact. This is normally the same as the parts to be deformed.

  • Press down direction: Nodes in the seat will be moved in this direction. For a car seat, you would normally define one direction for the seat cushion and one for the backrest. That is, two seat deformation operations have to be done in this case. One for the cushion and one for the backrest.

    The press down direction can be specified with:

    • The general Vector creation function.

    • Global direction, by clicking X, Y or Z buttons.

    • Type in the vector components in the text fields.

  • Reference: Option to create *INITIAL_VOLUME_REFERNCE_GEOMETRY keyword for the seat.

  • Apply: Apply seat deformation.

  • Reject: Reject the seat deform operation.

  • Accept: Accept the seat deform operation.

  • Done: Exit this interface.