By assigning a serviceability configuration to an object, you can define the limit values to be checked for the design. The basic structure of the dialog box for design configurations and the possibility of assigning them to the individual objects are described in Chapter Aluminum Design .
Serviceability Limits
Deflection limits are defined as a small part of the reference length. In this case, a distinction is made between a beam supported on both sides and a cantilever beam. Depending on the type selected in the Design Supports & Decflection tab, the corresponding limit value is checked during the design. The reference lengths can also be defined in the Design Supports & Deflection tab.
Depending on the selected design standard, various design situation types are available for the serviceability limit state design checks. A separate limit value can be defined for each combination type. In the case of the design according to EN 1999‑1‑1, a distinction is made between the characteristic, the frequent, and the quasi-permanent combinations. The limit values entered in the standard values for EN 1999‑1‑1 are only suggestions at first, as there are no fixed limit values specified in the standard itself.
Vibration Design (for EN 1999‑1‑1 only)
By entering the limits for vibration design, you can easily check the vibration amplitude. All design situations of the "Vibration" category are checked within the design (the selection is made in the table of Design Situations). It is assumed that these are appropriate load combinations or result combinations that contain the maximum values of the vibration amplitudes in the form of deflections. They are compared to the entered limit value.