Is it possible to define the damage parameter ζ manually for the calculation with RF‑CONCRETE Deflect? In such a way that it should always be at least 0.5?


No, this is unfortunately not possible.

If the "Tension Stiffening" option is not applied for the calculation, the damage parameter ζ is either "0" for "uncracked sections" or "1" for "cracked sections." For this, see the technical article about the distribution of the damage parameter ζ under Downloads below.

Nevertheless, the manual specification of ζ = 0.5, for example, is not possible.


Damage parameter Zeta Deformation Deflection State II (cracked)



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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

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RF-CONCRETE Deflect 5.xx

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Analytical deformation analysis of plate structures consisting of reinforced concrete

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