Creating Member with Variable SHAPE-THIN Cross-Section

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In RFEM and RSTAB, it is possible to analyze members with a variable cross-section, which can also consist of freely defined SHAPE-THIN cross-sections. For the determination of internal forces and deformations, the cross-section properties are interpolated.

Members with a variable SHAPE-THIN cross-section can also be designed if the following is considered during the modeling:

  • In SHAPE-THIN, create the start cross-section and save it after the calculation.
  • Create a copy of the cross-section, for example, by using "File → Save as ..."
  • Adjust the geometric parameters such as height or width to create the end cross-section. Nodes or elements may not be added or deleted!
  • Calculate the cross-section and save it.

After importing the two cross -sections in RFEM or RSTAB, you can check whether the modeling is correct in the rendering: Only if the cross-section change is displayed as a linear distribution, a design with the modules STEEL or RF-/STEEL EC3 is possible.

Author

Dipl.-Ing. (FH) Robert Vogl

Dipl.-Ing. (FH) Robert Vogl

Technical Editor, Product Engineering & Customer Support

Mr. Vogl creates and maintains the technical documentation. In addition, he is involved in the development of the SHAPE-THIN program and provides customer support.

Keywords

Variable cross-section Taper SHAPE-THIN section Stress point

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