Constraints

In OpenSees there are two types of constraints:

• Single Point constraints which prescribe the movement (typically 0) of a single dof at a node. There are a number of commands for defining single-point coonstraints:
  • fix
  • fixX
  • fixY
  • fixZ
• Multi-Point constraints which prescribe that the movement of certain dof at one node are defined by the movement of certain dof at another node. There again are a number of commands for defining multi-point constraints.
  • equalDOF
  • rigidDiaphragm
  • rigidLink