The weight of the load-bearing structural elements are calculated automatically by the program and is considered in the calculations, if “+Structural dead load” type load case is defined and it is added to the load combinations or load groups. So, the so-called “auto dead-load” is calculated from the geometry and material-dependant density value.

The direction of the dead-load is vertical, but the vertical direction differs in the different FEM-Design modules.

1582554329138-224.png 1582554910943-252.png 1582555877428-975.png1582555973562-928.png 1582557800048-361.png
Structural Dead-load (gravity) direction
Global Z directionGlobal Y direction

Table: The structural dead-load direction by FEM-Design Modules

Definition steps

  1. Start the 1583243189699-383.png  Load case command, and define a “+Structural dead load” type load-case with a name (such as “Dead load”). So, the “auto dead-load” is allowed on load-case level.
  2. Define loads (Point-, Line- and Surface loads) under the load-case defined in the previous, 1st step, if additional dead-loads coming from invisible not-load-bearing parts (non-load-bearing layers of composite structures) are requested.
  3. Add the load case defined in the 1st step to load combinations/groups depending on the later design.

The auto dead-load is always invisible. Only the additional, manually defined dead-loads can be displayed (as point/line/surface load) by activating the layer of the host load-case.

Created by Fredrik Lagerström on 2020/04/02 18:11
Copyright 2019 StruSoft AB
FEM-Design Wiki