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Frequently Asked Questions (FAQ)
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The distances of the crane axes can be entered in the "1.4 Loading" window within the crane parameters depending on the number of crane axles, see Figure 1.
AnswerYou can perform the preliminary dimensioning of stiffening systems with our module SHAPE-THIN. Thus, the individual wall sections can be modeled and calculated with the theory of stiffening systems. The result is information about the centroid, shear center, and details about the cross-section values of the individual sections. Furthermore, it is possible to determine the individual shear forces in the walls. You can find further information in the links provided under this FAQ.
AnswerUnfortunately, this is not possible so far. The additional loads can only be considered as equal load over the whole carrier.
AnswerWe are sorry, but the program DICKQ is currently not available as a student version.
AnswerYes, that is possible. If the add-on module FE-BEUL is not opened as a stand-alone variant but via RSTAB / RFEM, the loading fields (c / t parts of a bar cross-section) as well as the respective load cases can be read in FE-BEUL of the RSTAB / RFEM model (see Image).
AnswerVertical wheel loadsQ C (share due to crane own weight)Q H (share due to lifting load)Horizontal wheel loads
H T (proportion as a result of starting / braking the crane bridge)
H S (proportion of skew forces as a result of starting / braking a crane)
H T3 (proportion as a result of approaching / braking trolley or hoist)longitudinal loads
H L (proportion as a result of starting / braking a crane)In addition, if a skew force (S) or a buffer force (H B ) is effective, it can be given below the table.
AnswerThe support forces will be combined in the same way as the internal forces from the load cases with consideration fo the dynamic coefficients. For this purpose, the bearing forces (except for LF1 and LF2) are multiplied by the ratio of vibration coefficient carrier to vibration coefficient bearing and added according to the LK criterion, since the wheel loads from LF3 already include the vibration coefficient for the carrier.With the option only max / min, only the extreme values of the bearing forces for the correspondingDirections issued, ie the characteristic bearing forces multiplied by the associatedVibration coefficient for supports (see Figure 5.6).
AnswerIf your buckling stiffeners are not defined over the complete buckling length, the FE-BEUL program will automatically use this stiffness as a spare rod incl. mitwirkender width generated and carried out using the additional module KNICK an eigenvalue calculation. This then gives the critical bending stress of the rod and thus the stiffness. The length of the replacement rod is the stiffener length. A detailed output of the internal results is not yet possible.
AnswerRolled sections have access to the extensive [library] of I-shaped rolled sections,which is accessible via the corresponding button (see Figure 1). Among others, the following cross sections are available: I-profile series (I, IPE, IPEa, IPEo, IPEv, HE-B, HE-A, HE-M, HE-AA etc.)If there is a welded cross-section, I-shaped uniaxial symmetrical profiles can be defined via the button (see Figure 2).As additional profiles, angle and U-sections are possible. They can be like the cross sectionsSelect the carrier in [Library] or define it with the button (see Figure 3).
AnswerWith the add-on module KRANBAHN, only the main girders, but not the gantry crane itself, can be detected. Also, the head girders of the overhead crane are not detected.In the case of an overhead crane, the parameters for the rail cross section and an additional cross section can be made in the mask 1.3 of the additional module.For a tab, the width a and the height b should be specified. Beam cross-sections made of rolled or welded profiles can be combined as desired with a rail or lug. If the rail profile is too large or the carrier profile is too small, the input can only be continued with a plausible crane rail carrier profile.As additional profiles, angle and U-sections are possible. They can be like the cross sectionsSelect the carrier in [Library] or define it with the button.
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