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Model dummy elements

Details of Model dummy elements

  • Module code ESA1127
  • Software
    • SCIA Engineer
  • FAQ topic

A dummy element is a fictive element that can be a helpful tool for certain modelling issues, for example: connecting two eccentric beams, connecting an eccentric beam to a plate, connection between two plates,...

 A 1D dummy element can be made with these four simple steps:

  • Create a fictive material
    To create a fictive material, you can copy a material that is already available in the Materials library (Main menu > Libraries > Materials). You will need to change the unit mass to a lower value: 0,1 kg/m³. Do not set this parameter to 0 kg/m³, this could lead to some numerical issues during the analysis. Also increase the E modulus with a factor, for example 100.
  • Create a fictive element
    The next step is to create a fictive element. Open the Cross-sections library (Main menu > Libraries > Cross sections) and input a new cross-section with the fictive material.
  • Optional: change type to numerical
    Finally, if necessary, the type of the cross-section can be changed to numerical via the command Element change type. This can be done to make the dummy element ‘invisible’ when rendering the model.
  • Now you can model the 1D elements via the command in the Input panel (workstation Structure > category 1D Members)

 

Extra: a 2D dummy element can be modelled by creating a fictive material and using this material to model a 2D element (workstation Structure > category 2D Members):