MinimumGap3D

Syntax

constraint MinimumGap3D (1) (2) (3) (4)
# (1) int, unique constraint tag
# (2) int, node tag
# (3) int, node tag
# (4) double, gap

Theory

This is a conditional constraint that limits the distance between two nodes, viz.,

\left|\mathbf{x}_i+\mathbf{u}_i\-\mathbf{x}_j-\mathbf{u}_j\right|\geq{}D_{min}.

The participating DoFs are 1, 2, and 3.