1178x
002828
2019-12-06

Processo di form-finding in RFEM

Perché il comando "Calcola tutto" non calcola i risultati per i casi di carico con la categoria di azioni "Form-Finding"?


Risposta:

Il processo di form-finding in RFEM cerca le forme in equilibrio, considerando la precompressione della superficie e le condizioni al contorno date. The surface stress for this analysis is defined in the relevant element property definitions. The program can also consider additional loads during the form-finding calculation in the load cases defined with the "Form-Finding" action category.

Since RFEM runs the form-finding analysis before the calculation of all other load cases and load combinations while considering the form-finding settings in the element properties and loads in the load cases with the "Form-Finding" action category, the calculation of the load cases with the "Form-Finding" category for the determined shape provides no relevant information for the structural design. The load cases with the "Form-Finding" category are only provided as an input for the form-finding analysis. The given loads will be "memorized" in the model for the form-finding calculation.

Therefore, the "Calculate All" command neglects these special load cases with the "Form-Finding" category and only calculates the load cases which will be applied on the final shape of the structure.


Autore

Il Sig. Niemeier è responsabile dello sviluppo di RFEM, RSTAB, RWIND Simulation e nel settore delle strutture a membrana. È anche responsabile del controllo qualità e dell'assistenza clienti.



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