New
FAQ 002817 EN-US 04/08/2019

Sonja von Bloh Modeling | Structure RFEM

What is the sign definition for the nonlinearity of a line release?

Answer

The direction determination is basically determined by the line release axis system and the location of the cut-out object. The line-sharing axis system display can be viewed in the Project Navigator - Show under Model -> Line enables are activated (see Figure 1).
Determining the direction for the nonlinearity determination is important how the released object moves relative to the line release axis system from the original element.
In Fig. 2, the area 2 with the line release u z fixed if v z is defined as a negative object. The load shown at 1 and 2 would move the released surface 2 against the z-axis of the line release axis system. The line release would therefore not be effective at these loads, ie the surfaces 1 and 2 would be firmly connected.

Keywords

Line release Line release axis system Release coordinate system Nonlinearity Sign Sign definition

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