Parametric Input with Access to Cross-Section Values

Tips & Tricks

Parametric input allows you to enter the model data and load data in a specific way so they are dependent on certain variables (parameters). You can enter the parameters directly or calculate them from other parameters and constants and furthermore, it is possible to access the cross‑section values. This can be useful, for example, when calculating precambers, depending on the standard.

For comprehensibility reasons, a parameter for a cross‑section should be defined at first. The ‘CrossSection’ function provides the cross‑section according to its number. Now you can select any cross‑section value using the formula ‘GetCSPar’. Click the Info button to display the window ‘Info About Cross‑Section’ with an additional column ‘ID’. Here you can find the correct syntax for the individual cross‑section values.

For the determination of the precambers, you need to know a buckling curve. This can be selected as well. You should note, that the value designation of buckling curves is to be converted into figures, so ‘a’ into 1, ‘b’ into 2 and so forth. If the precambers are tabulated in regular intervals - as in EN 1993‑1‑1 - the direct calculation is possible. In case of irregular tabulation, for example in the National Annex to EN 1993‑1‑1, the precambers can be determined by means of a nested IF function (see Figure).


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