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Wind Simulation & Wind Load Generation
With the stand-alone program RWIND Simulation, wind flows around simple or complex structures can be simulated by means of a digital wind tunnel.
The generated wind loads acting on these objects can be imported to RFEM or RSTAB.
This technical article analyzes the effects of the connection stiffness on the determination of internal forces as well as the design of connections using the example of a two-story, double-spanned steel frame.
In the article Lateral-Torsional Buckling in Timber Structures | Theory explains the theoretical background for the analytical determination of the critical bending moment Mcrit or the critical bending stress σcrit for the tilting of a bending beam. The following article uses examples to verify the analytical solution with the result from the eigenvalue analysis.
With the RF-STABILITY or RSBUCK add-on modules for RFEM and RSTAB, it is possible to perform eigenvalue analyzes for member structures in order to determine the effective length factors. The effective length coefficients can then be used for the stability design.
This example was described in technical literature  as Example 9.5 and in  as Example 8.5. The lateral-torsional buckling analysis is to be performed for the considered platform main beam. It is a uniform structural component. Therefore, the stability analysis can be performed according to clause 6.3.3 of DIN EN 1993-1-1. Due to the uniaxial bending, it would also be possible to perform the design using the General Method according to Section 6.3.4. In addition, the determination of Mcr on the idealized member model will be validated by means of an FEA model within the framework of the methods mentioned above.
Shell buckling is considered to be the most recent and least explored stability issue of structural engineering. This is less due to a lack of research activities, but rather due to the complexity of the theory. With the introduction and further development of the finite element method in structural engineering practice, some engineers no longer have to deal with the complicated theory of shell buckling. Evidence of the problems and errors to which this gives rise is very well summarized in .
Buckling analysis according to the effective width method or the reduced stress method is based on the determination of the system critical load, hereinafter called LBA (linear buckling analysis). This article explains the analytical calculation of the critical load factor as well as utilisation of the finite element method (FEM).
Critical load factors and the corresponding mode shapes of any structure can be efficiently determined in RFEM and RSTAB using the RF-STABILITY or RSBUCK add-on module (linear eigenvalue solver or nonlinear analysis).
Stability Analysis of Two-Dimensional Structural Components on Example of Cross-Laminated Timber Wall 3
This article explains the alternative to the equivalent member method offering the option to determine the internal forces of the wall susceptible to buckling according to the second-order analysis considering imperfections and to subsequently perform the cross-section design for bending and compression.
Stability Analysis of Two-Dimensional Structural Components on Example of Cross-Laminated Timber Wall 2
The following article describes design using the equivalent member method according to  Section 6.3.2, performed on the example of cross-laminated timber wall susceptible to buckling described in Part 1 of this article series. The buckling analysis will be performed as a compressive stress analysis with reduced compressive strength. For this, the instability factor kc is determined, which depends primarily on the component slenderness and the support type.
Stability Analysis of Two-Dimensional Structural Components on Example of Cross-Laminated Timber Wall 1
Basically, you can design structural components made of cross-laminated timber in the RF-LAMINATE add-on module. Since the design is a pure elastic stress analysis, it is necessary to additionally consider the stability issues (flexural buckling and lateral-torsional buckling).
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