combine Quadratic sisimic load with Ansys Workbench

- January 28, 2020 at 12:40 pm
  ANIS
  Subscriber
```
I am doing to make a simulation of a structure which must resist to seismic solicitaion in Ansys Workbench.
 the seismic force according to X = 595 N and 270 N according to Y and 250N according to Z. 
the proper weight force is equal to 350N. I created 4 steps for  each force.
```
  I wanted to know how we can combine the load cases:
  
  · PP(proper Weight) + SQRT (Fx ^ 2 + Fy ^ 2 + Fz ^ 2)
  
  · PP-SQRT (Fx^2 + Fy^ 2 + Fz ^ 2)
- January 28, 2020 at 4:11 pm
  
  peteroznewman
  Subscriber
  
  There is a better way to perform a seismic simulation on a structure than doing a SRSS on three static loads.
  
  It is called Response Spectrum. Do you have the seismic acceleration-time history data?
  
  If that is not of interest, then you can do what you ask above by using Solution Combination worksheet.
  
  It has a built-in ability to do SRSS.
  
  In your reply, try pasting your text into Notepad, then copy it from there into the post to avoid all the formatting you got above.