A sliding restraint is applying as a “partial restraint” in Scan&Solve.

in this case, the left footing of an arch if fully retrained in x,y, and z, directions (indicated by appearance of green, blue, and red colors), while the right footing is restrained in z direction only, shown here in blue. As the result, the left footing is fixed, but the right footing can slide in x-y plane.

The sliding can be made symmetric by adding an edge to the arch at the centerline, and applying an XY restraint to the edge (required for numerical stability), and Z restraints to the footings. Now both footings can slide in the x-y plane.

This short video shows how to restrain edges in Scan&Solve 8zEEzcVdd-4?.swf?560?

Scan&Solve Version 1.4 and later

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