How can I model a surface as a quarter-circular ring with variable thickness from the inside to the outside?


In the case of surfaces with variable thickness, the plane consists of three nodes. The result is a wedge, not a cone, as desired. Therefore, it is recommended to divide the quarter-circular ring into separate uniform surface segments:

  • Divide the inner arc line using n intermediate nodes.
  • Divide the outer arc line using n intermediate nodes.
  • Add individual lines, delete the original surface, and redefine the individual surface segments.


  • Add individual lines, divide the original surface using integrated lines.
  • Define variable thickness as desired for each individual segment.


Variable thickness Quarter circular ring


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RFEM Main Program
RFEM 5.xx

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Structural engineering software for finite element analysis (FEA) of planar and spatial structural systems consisting of plates, walls, shells, members (beams), solids and contact elements

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