investigation of wear between two cylindrical objects

- December 31, 2021 at 6:03 pm
  
  hamoudy
  Subscriber
  
  so in my Case
  one cylinder have to be fixed and rotatote and i have define for it the following Conditions
  1) Fixed support
  2) Drehmoment so it can rotate with the given Moment
  the second Cylinder have to (move) into the first fixed Cylinder and apply a certain Pressure
  1) i put Cylinder support and Displacment on it
  2) the Pressure
  
  the results are not showing as expected
- January 5, 2022 at 2:07 pm
  
  John Doyle
  Ansys Employee
  
  I am not sure, but you mention "...the second Cylinder have to (move) into the first fixed Cylinder and apply a certain Pressure"
  How and where is the pressure being applied? Is it causing a Hertzian stress between the two cylinders along top and bottom perhaps?
  It appears the plot you are showing is for end of LS1. Are all the loads being applied in one loadstep?
  Perhaps you have considered this already, but if not, sometimes it helps to apply these loads across multiple loadsteps to get a better understanding of the influence of each load. (i.e. Apply moment in LS1, Apply Pressure in LS2...)
- January 9, 2022 at 5:28 pm
  
  hamoudy
  Subscriber
  
  well its supposed to be a static simulation
  so i dont wanna do it in 2 steps
- January 9, 2022 at 5:29 pm
  
  hamoudy
  Subscriber
  
  Although i did change the Drehmomentum to rotional velcotiy there is no rotation show in my Simulation
  it shows the right results tho.
- January 9, 2022 at 10:06 pm
  
  peteroznewman
  Subscriber
  
  A Rotational Velocity load from the Inertial category in a Static Structural model does not cause any parts to rotate so will not cause any wear.
  You need to use a Transient Structural model to rotate parts and cause wear.
- January 10, 2022 at 8:45 pm
  
  hamoudy
  Subscriber
  
  hey Peter thank you so much
  i did find that after reading alot about stastic -Models
  thank you so much
- January 10, 2022 at 8:48 pm
  
  hamoudy
  Subscriber
  
  on the other Hand i have a Question to you or to any one who can actually help
  iam getting that the Gap should be in a wider Ranger compared actually to where the Frictional stress is acting and i would love to know where is the error or problem if there is any ?
  i did add the Project archiv if u wanna have a look at it
  thanks in Regards
- January 10, 2022 at 9:12 pm
  
  hamoudy
  Subscriber
  
  what i actually mean
  isnt all the red part in Gap
  should also be red in Frictional stress