Effective Lengths for Lateral-Torsional Buckling
In RF‑/TIMBER Pro, it is also possible to define effective length for lateral-torsional buckling. The effective length for lateral-torsional buckling is then calculated according to EN 1995‑1‑1, Table 6.1. This option is useful especially for nonuniform load introduction.
Dipl.-Ing. (FH) Bastian Kuhn, M.Sc.
Product Engineering & Customer Support
Mr. Kuhn is responsible for the development of products for timber structures and provides technical support for our customers.
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In the add-on modules RF-/TIMBER Pro, RF-/TIMBER AWC, and RF-/TIMBER CSA, it is possible to consider the resulting deformation of a member or set of members. In addition to the local directions y and z, you also have the option ‘R’. This allows you to compare the total deflection of a girder to the limit values given in the standards.
Result of Eigenvalue Analysis for Single-Span Beam With Lateral and Torsional Restraint with Rigid Intermediate Supports
Result of Eigenvalue Analysis for Single-Span Beam With Lateral and Torsional Restraint with Elastic Member Foundation
The cross-section resistance design analyzes tension and compression along the grain, bending, bending and tension/compression as well as the strength in shear due to shear force.
The design of structural components at risk of buckling or lateral-torsional buckling is performed according to the Equivalent Member Method and considers the systematic axial compression, bending with and without compressive force as well as bending and tension. Deflection of inner spans and cantilevers is compared to the maximal allowable deflection.
Separate design cases allow for a flexible and stability analysis of members, sets of members, and loads.
Design-relevant parameters such as the stability analysis type, member slendernesses, and limit deflections can be freely adjusted.
- How can I perform a stability analysis for a tapered member?
- Can I design laminated veneer lumber with RFEM/RSTAB?
- I have a model of a timber building, which I have transferred from Scia Engineer and adapted it into the RFEM program. The models should be the same; however, it can only be calculated in Scia Engineer while RFEM reports singularity. How do I edit the model to analyze it in RFEM?
- How can I model a timber-concrete composite floor?
- Where do I find the setting to specify the entered structural component as a "wall" or "slab"?
- The information about the limit time for the fire resistance design R in the RF‑TIMBER Pro add-on module is missing in the printout report. Is it posssible to add this information to the printout report?
- I would like to convert the load from a surface load to a line load, that is, to apply it to the individual beams. How can I do this without using an auxiliary area?
- I have defined temperature loads, strain loads, or a precamber. Once I modify stiffnesses, the deformations are no longer plausible.
- Is it possible to transfer properties, such as the cross-section, or the surface thickness as well as the material of a surface, of an existing element to a new element?
- Is it possible to set user-defined values when viewing solid stress results?