ACIS Entity check error in HFSS (RCS Analysis in HFSS)

- March 17, 2020 at 12:40 am
  
  minkwoski1000
  Subscriber
  
  Dear all,
  
  I am currently working on DRONE RCS simulation in HFSS. Originally, my drone CAD model is an STL CAD file. First, I imported the drone SLT CAD model into SpaceClaim for splitting and healing. In SpaceClaim, I received warnings when I tried converting the large faceted bodies into full geometry. However, I went ahead to make the conversion since I had no option. After conversion to solid, I detached the model into components. Then, I healed the model and exported it into HFSS as '.sat' CAD file. When I validated the .sat CAD model in HFSS, I got several errors such as "ACIS Entity check error" and other ACIS errors.
  
  This got me wondering if I should ever import complex SLT CAD files into SpaceClaim since my goal is not 3D printing but RCS analysis in HFSS. I guess the complex SLT CAD model, which has so many faces, could be the cause of the problem. I am not sure about this issue. Therefore, I need help.
  
  Also, is it better to import the drone model into SpaceClaim as a .dXF file instead of the SLT CAD? I cannot find the original CAD model in .sat or .sab file formats. Therefore, I have to make do with SLT files and convert them to .sat in SpaceClaim.
  
  I am currently using ANSYS Electronics desktop 2019 R3 (License from North Carolina State University). I have access to SpaceClaim 19.2.
  
  I could not upload the drone SLT CAD. However, it can be downloaded from the link:
  
  https://grabcad.com/library/dji-spark-3d-model-scale-1-1-1
  
  Thank you.
  
  My email: mcezuma@ncsu.edu
- March 23, 2020 at 2:43 pm
  
  rtk
  Ansys Employee
  
  Hello,
  
  ACIS errors occurs mostly due to ‘dirty’ geometries in encrypted components or poorly exported geometries. A solution for this issue can be proper analysis of model for ‘dirty’ areas. In SpaceClaim, you could properly heal the imported model using, Repair >> Fix, Solidify, Adjust options and Prepare >> Analysis, Detect, Remove options. After importing it to the HFSS domain, check for ‘dirty’ geometries there as well using Modeler >> Model analysis >> Analyze objects; there you have options for heal, simplify, stitch sheets etc..
  
  Regards,
- September 17, 2021 at 5:58 pm
  
  amoghangre
  Subscriber
  
  .
  Hey everyone, I am new to Hfss and I am designing Monopole when I am trying to do excitation and wave port , after clicking on next I am getting this error. I am not able to understand what am I doing wrong here.
  .