Fatigue Analysis in nCode with LSDyna

- September 25, 2024 at 6:39 pm
  
  louiee1907
  Subscriber
  
  Hi,
  I did a drop test analysis of the landing gear in LS-DYNA. It lasts 0.2 seconds. I'm considering performing a time-step analysis in nCode, but should I only take the final second, or should I include the intermediate times in the time-step as well?
- September 26, 2024 at 2:55 pm
  
  danielshaw
  Ansys Employee
  
  Do the intermediate times create stress cycles? Probably not, so the probably do not produce fatigue damage.
  - September 26, 2024 at 8:42 pm
    
    louiee1907
    Subscriber
    
    I did time-step fatigue analysis, and I used last solution where is in 0.2 seconds, there was no any cycle. However, when I used all the solution(0.05, 0,07,0.1.. 0.2), the cycle was 4678.
    I think, intermadiate times produce the fatigue damage, but I did not be sure. It is true or not.
- September 30, 2024 at 6:01 am
  
  louiee1907
  Subscriber
  
  Is there any recommend for this analysis?