Dimension changes

- July 29, 2019 at 1:28 pm
  
  Amin
  Subscriber
  
  Hi, Let us suggest that I have the two 3-D bodies presented in the image bellow. They are two elements with different material properties. the interaction is modeled by contact elements combined with cohesive zone model (CZM). If I do dimension changes in geometry (for example reduce the dimensions, to reduce the contact surface) in element number 2. should I need to re-input the material properties and reset the contact options when I do the changes or ANSYS will let the same material and contact options before the changes?.
- July 29, 2019 at 3:25 pm
  
  Sandeep Medikonda
  Ansys Employee
  
  What product are you using APDL or Mechanical?
  
  If you use Mechanical, it is often recommended to select CAD features or use Named Selections instead of nodal selections, so that the scoping is not lost.
- July 29, 2019 at 3:42 pm
  
  Amin
  Subscriber
  
  Thank you for your reply.I am doing a static structural analysis with Ansys workbench. Do you mean that I need to re-input the material properties (I am using APDL command for it) and re-set the contact options as the previous model (model before changes)?
- July 30, 2019 at 5:39 pm
  
  Wenlong
  Ansys Employee
  
  Hi Amin,
  
  If you edit the dimension in SpaceClaim and the topology of the geometry doesn't change, then the corresponding contact properties should be preserved.
  
  Workbench provides cohesive zone models in Engineering data. If you define it there it will be independent with geometry.
  
  Bests,
  
  Wenlong
- July 31, 2019 at 1:59 pm
  
  Amin
  Subscriber
  
  Thank you Wenlong