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


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.


Shrinkage Deformation Implausible High Instability Matrix Singular Reinforced concrete State II


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