Gasket analysis in workbench ( clouser data)

- April 7, 2022 at 11:59 am
  
  ABK
  Subscriber
  
  I am performing analysis on flange joint in ansys workbench. I have modelled flanges, stud bolt and gasket of the same. I have gasket clouser data ( Load vs compression chart) and i need to use it in analysis. But when i apply gasket data i get error in solution information " The 1th nonlinear unloading data at temperatures 85 does not have a possitive slope at 1th segment for gasket material number 2" . I have attached snaps of my analysis. It will be appreciated if someone help me out.
- April 7, 2022 at 3:15 pm
  
  mrife
  Ansys Employee
  
  It looks like the gasket data is not defined correctly. Closure is the displacement at the top of the gasket minus the displacement at the bottom of the gasket. So at 0 closure there should be 0 pressure. I'm guessing that the pressure values just need to be reordered. See the following MAPDL help section, it has a XY plot of what gasket pressure vs compression behavior looks like generally speaking:
  MAPDL Help -> Theory Reference -> Chapter 4.4 on Gasket Material
  Mike