Pin Slot Connector
The penalty used for enforcing connector motion may lead to a noisy solution, particularly in single precision for some models. Use of double precision is, therefore, preferable in such situations. If performance is a concern for double precision, you can run the constraint packaging and constraint solver in double precision (see Abaqus/Standard and Abaqus/Explicit execution).
You cannot specify the motion of connectors in a subspace dynamic analysis.
Use the following option in the history portion of the inputfile to specify a relative displacement for a connector:
Use the following option in the history portion of the inputfile to specify a relative acceleration for a connector:
CONN3D2. SLOT and CARDAN connection types.
The figure on the left is a schematic representation of the connection to be modeled, while the figure on the right is the finite element mesh. Displacements in the slot are allowed only along the line of the slot, and connection type SLOT is appropriate for enforcing these kinematics. Assume the pin and slot are constructed in such a way that the only rotation of the pin relative to the slot is along the local 3-direction. This is a revolute constraint; however, basic rotation connection type REVOLUTE uses the local 1-direction as the revolute axis. In this case connection type CARDAN combined with a specified constraint can be used to define a revolute-type connection with the appropriate revolute axis.
For illustrative purposes assume the connection is actuated by a rotational velocity of radians per second around the pin's axis. Using input parametrization for convenience, the following lines are used:
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