We have an exciting announcement about badges coming in May 2025. Until then, we will temporarily stop issuing new badges for course completions and certifications. However, all completions will be recorded and fulfilled after May 2025.

Ansys Innovation Space

FREE STUDENT SOFTWARE

With regards to the SEMI command, what is the safety factor SFAC used for? What is it a factor on?

- March 17, 2023 at 9:00 am
  
  FAQ
  Participant
  
  SFAC is used to calculate the time increment. In semi-implicit, program calculate a time increment that is stable and to be on safer side, multiply that time increment with this safety factor to get the time increment program is going to use. For example, if the stable time increment program calculates is tstable= 1sec and SFAC is 0.9 (default), then the program uses a time increment of timinc=0.9*tstable=0.9. If the SFAC is 0.1, then the time increment used will be 0.1*tstable=0.1. If the solution seems be be unstable, using a smaller factor of safety will help.

Add Tags

Share to Feed

Cancel Save Draft Post