If the meshing process fails, the operation is ended directly before the calculation.Īfter a successful meshing, the program starts the FF process. From a program perspective, when initially entering the FF elements, you only have to make sure that all required connection nodes and lines are integrated into the surfaces/members and that the meshing process can generate a mesh for all the elements. It should be noted that the initial shape of the FF elements is irrelevant. Furthermore, the initial input requires a determination of surface stress value in the warp and weft direction of the membranes, including their application method (tension or projection), and the prestress level or sag dimension of the cable elements that should act according to the FF calculation. The initial input provides the program with the information as to between which points a cable is enclosed, and between which line polygon a membrane is enclosed. Therefore, RFEM requires an initial input of the FF elements in the first instance. It is precisely the task of the FF process to find this position and fixate it. When defining a model of lightweight structures, you may realize that the geometric position of the membranes and ropes is unclear.
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