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Subsection 3.9.1: The Prestrain Initial Condition Up Chapter 3: Free Format Input Subsection 3.10.1: Prescribed Nodal Degrees of Freedom

## 3.10 Boundary Section

The Boundary section defines all fixed and prescribed boundary conditions that may be applied to the geometry. Individual boundary conditions are defined via the bc tag and the particular boundary condition is defined via the type attribute. The following boundary condition types are currently supported.
fix Define a fixed boundary condition. A fixed boundary condition is usually identical to a zero prescribed boundary condition.
prescribe Define a prescribed boundary condition. The nodal values of a prescribed boundary condition are define by the user and can vary as a function of time and position.
rigid Define a rigid node set. The nodes in a rigid node set move with the rigid body to which they are assigned.
linear constraintDefine a linear constraint between nodal degrees of freedom.
Subsection 3.9.1: The Prestrain Initial Condition Up Chapter 3: Free Format Input Subsection 3.10.1: Prescribed Nodal Degrees of Freedom