A Weak Layer boundary allows you to model a potential sliding interface by defining a polyline with assigned strength properties. This is useful for modeling very thin weak layers or interfaces with low strength properties, such as a geomembrane interface.
Add Weak Layer
To add a weak layer to a model use the Add Weak Layer option.
NOTE: a Weak Layer boundary is an independent modeling entity and is not considered part of the model boundary geometry. It does NOT get intersected with other boundary types, and cannot be used to define material regions. It is only used for the specific purpose of defining a boundary which has strength properties.