Smooth Body Motion Property

Smooth Body Motion property is a physical property assigned to a connection.

Smooth Body motion behavior.

The set of slave nodes (there is generally only one slave node) is linked to the center of gravity of the set of master nodes according to rigid-body motion.

The input and output characteristics are:

  • Input:
    • Degrees of freedom: relaxation of some relations (optional)
    • Local Axis (optional)
  • Output:
    • Point force vector
    • Point moment vector

The output characteristics can be expressed at the given positions in the element and in different axis system:



Axis System 


Center of element 

Nodes of element 

Gauss point 



Point force vector




Point moment vector