damping and hourglass coefficient in SSI example

- August 7, 2023 at 4:49 pm
  
  Maryam Tabbakhh
  Subscriber
  
  Hi,
  I was reviewing the example for SSI in here:
  https://ftp.lstc.com/anonymous/outgoing/ubasu/website/examples/ssi-transient.k
  
  I had two questions? Why the coefficeint of hourglass is zero?
  and the second question is that:
  why there is no tag for part in Damping_frequency_deform? If we put the coefficient to zero does it apply to all?
  
  Best
- August 9, 2023 at 9:48 pm
  
  Ushnish Basu
  Ansys Employee
  
  In general, an entry of zero sets the default value as listed in the manual.
  DAMPING_FREQUENCY_RANGE applies to all parts for PSID=0, except for those specified in other DAMPING_FREQUENCY_RANGE cards. This is mentioned in the description in the manual.
  Note that these examples are illustrative only, and you should set parameters as appropriate for your model