Learning Forum

[minkwoski1000]

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

 

[rtk]

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,

[amoghangre]

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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.

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