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Overview of Non-Circular Surfaces

When the Surface Type in the Surface Options dialog is Non-Circular, you can define:

  • Specific non-circular slip surfaces, and / or
  • A critical surface search to attempt to find the slip surface with the overall minimum safety factor for a given slope.

TIP: see the Slide2 Search Methods article for an overview of the different search methods in Slide2 and suggestions for using them effectively

Specific Non-Circular Slip Surfaces

Specific non-circular slip surfaces are added to a model with the Add Surface Surfaces Icon option in the Surfaces menu. Any number of specific non-circular slip surfaces can be added to a model.

Non-Circular Surface Search Methods

There are FIVE different Search Methods available in Slide2 for locating critical NON-CIRCULAR slip surfaces:

Block Search

Path Search

Simulated Annealing

Particle Swarm Search

Auto Refine Search

Cuckoo Search

See the above topics for complete descriptions of these Search Methods.

NOTE:

  • For a given analysis, only ONE Search Method can be used, you cannot run multiple Search Methods at the same time.
  • However, specific non-circular surfaces AND a critical surface search can be defined and analyzed for the same model, this does not cause any problems.

Surface Optimization

A supplementary optimization can be applied to slip surfaces, after the initial analysis, in order to locate slip surfaces with an even lower factor of safety. See the Optimize Surfaces topic for details.

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