Section Definition
A section is a cut in the structure where forces and moments will be computed and stored in output files.
- A cutting plane
- A reference point to compute forces
- A direction of the section.
![](../../../images/solvers/theory_kinematic_constraints_section_rf1.png)
Figure 1. Definition of a Section for an Oriented Solid
![](../../../images/solvers/theory_kinematic_constraints_section_rf2.png)
Figure 2. Definition of a Section for a Shell Mesh
![](../../../images/solvers/theory_kinematic_constraints_section_rf3.png)
Figure 3. Center of Rotation and its Associated Frame for a Section
![](../../../images/solvers/theory_kinematic_constraints_section_rf4.png)
Figure 4. Resultant of Force and Moment for a Node I with the Rotation Point O