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Example horizontally non-relocatable and relocatable support

Figure 01 - Example horizontally non-relocatable and relocatable support
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FAQ 002826 EN-US

04/08/2019

Adrian Langhammer General RFEM RSTAB RF-CONCRETE NL Concrete Structures Finite Element Analysis Structural Analysis & Design Nonlinear Analysis Eurocode 2

When calculating the deformation of my surface model in RF-CONCRETE NL I get implausibly high values, what could be the reason?

Answer

It is quite probable that the high deformations are caused by the consideration of shrinkage and the horizontal support in the model.

The shrinkage is considered internally on the load side as a strain, but in this context, failure due to the shrinkage strain is also possible. If the shrinkage strain is prevented by a non-relocatable horizontal support, forces are generated which may lead to failure of the concrete and thus to a significant increase of the deformations or even to the instability of the model.

In this context, it is important that the boundary conditions of the model are represented as realistically as possible when using the nonlinear deformation analysis.

Keywords

Shrinkage Deformation Implausible High Instability Matrix Singular Reinforced concrete State II

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Associated Products
RFEM Main Program
RFEM 5.xx

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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

Price of First License
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RSTAB Main Program
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