Frew Features - Advanced Analysis Options - Modelling Axi-Symmetric Problems

Frew provides facilities for analysis of a plain strain excavation (e.g. an infinitely long trench) by enabling the user to apply a rigid boundary at the centerline of the problem.

Modeling of Props and Anchors


Struts may be inserted (or removed) at any node at any stage in the analysis. More than one strut may be defined at a particular node, and not all struts need to act simultaneously.


Modeling an applied moment or moment restraint

An applied moment or a moment restraint at a node can be modelled by using a strut with an inclination of 90 degrees and a non-zero lever arm together with an applied pre-stress force or a stiffness respectively.