Factor of Safety Check
Use the Factor of Safety Wizard to evaluate the factor of safety at each node of your model based on a failure criterion.
You can plot the factor of safety distribution throughout the model, or you can just plot regions of the model with a factor of safety smaller than a specified value to identify weak areas of the design.
| Regions with FOS value less than 1 are shown in red (unsafe regions). Blue regions indicate safe regions. | FOS distribution |
Large factors of safety in a region indicate that you can save material from that region. Many codes require a minimum factor of safety between 1.5 and 3.0.
- A factor of safety less than 1.0 at a location indicates that the material at that location has failed.
- A factor of safety of 1.0 at a location indicates that the material at that location has just started to fail.
- A factor of safety larger than 1.0 at a location indicates that the material at that location is safe.
- The material at a location will start to fail if you apply new loads equal to the current loads multiplied by the resulting factor of safety, and assuming that the stresses/strains remain in the linear range.