3rd stage of construction – anchor, analysis

In the 3rd stage we select the "Anchors" input mode to define parameters of the anchor as shown in the figure.

Anchor parameters input

Next, switch to the "Analysis" mode and by pressing the "Analyze" button run the calculation of the factor of safety. The resulting factor of safety appears on the bottom part of the frame.

3rd stage of construction – equivalent plastic strain and factor of safety

A back check of the shape of the resulting slip surface may prove to be quite important in some examples as a local failure may occur in other locations than we expect. The next plot shows evolution of plastic strains around the anchor head when relatively fine mesh is used (element edge length = 1m). If this occurs some action must be taken – for example:

Evolution of plastic strains at anchor head

Summary of the obtained results is available in the next chapter - "Evaluation of results".