Failing Support Conditions for Contact Surfaces

Technical Article on the Topic Structural Analysis Using Dlubal Software

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Technical Article

In order to create a surface model with failing supports close to reality, an option called "Failure if contact perpendicular to surfaces failed" is available in RFEM 5 for contact solids under "Contact Parallel to Surfaces".

Thus, the "Wobbling" load case of the modeled chair can be represented close to reality.

Since the chair legs are represented as members, it is possible and reasonable to use a model with a nodal support. This nonlinearity ("Failure of all, if PZ' negative" in this case) is also available in RFEM 5 and RSTAB 8.

Author

Dipl.-Ing. (FH) Frank Sonntag, M.Sc.

Dipl.-Ing. (FH) Frank Sonntag, M.Sc.

Sales & Customer Support

Mr. Sonntag coordinates the Dlubal Software office in Leipzig and is responsible for sales and customer support.

Keywords

Contact solid Failure Support Nonlinearity

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  • Updated 31 August 2021

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RFEM
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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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