Local Axis System

A (node) coordinate system can be applied at each node.

Example of a roller support at an angle.

The origin lies at the node in question. The direction of the X-axis is determined by specifying a relative dx and dz from the node. (see the figure above). Local coordinate systems can be used to specify node restrictions (supports or 'restrains'), as well as node loads and/or node displacements in any direction.

Local X-axis

dx Relative distance in x-direction

dz Relative distance in z-direction

With dx and dz, the position of the local x-axis is defined. The ratio dx / dz determines the angle.