Issue with assigning orthotropic properties in Ansys Workbench

- July 17, 2021 at 10:55 am
  
  WolfgangNeil
  Subscriber
  
  Recently I've been analyzing structures with orthotropic material properties in Ansys 2021 R1 student edition. I've successfully completed a few simulations in Static Structural
  However to my surprise, today when I was trying to define the properties, the software is showing that the material definition is incomplete even after defining all of the 9 properties. I found that I don't face the issue if I choose a smaller value of E.
  Please guide me to troubleshoot the issue.
- July 19, 2021 at 3:45 pm
  
  Govindan Nagappan
  Ansys Employee
  
  For orthotropic material, assumption is EX greater than or equal to EY which is greater than or equal to EZ
  See help doc: 2.1. Structural Fundamentals (ansys.com)
  By default, element coordinate system is aligned with global coordinate system
  You can change the element orientation if needed in Mechanical (Element Orientation (ansys.com)) or build your composite model in ACP
- July 20, 2021 at 5:38 am
  
  WolfgangNeil
  Subscriber
  
  Hi!
  Thank you for your input.
  However, I'm sharing two screenshots where I've used properties violating the directional E criteria as you have stated. Currently I've used Element Orientation to aligned the properties in the desired direction but I'm still confused why the set of values as stated earlier are not accepted.