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- One software package for all application areas
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- Flexible modular concept, extensible according to your needs
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- Proven software used in many well-known projects
Why Dlubal Software?
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.
Nonlinear calculation of a floor slab made of steel fiber reinforced concrete in the serviceability limit state with RFEM
Description of the procedure for the serviceability limit state design of a steel fiber reinforced concrete floor slab. It shows how to perform the corresponding designs for the SLS by means of the iteratively determined FEA results.
Reinforced concrete surface design for slabs, plates, and walls is possible in the RF-CONCRETE Surfaces module according to the ACI 318-19 or the CSA A23.3-19 standard. A common approach for slab design is the use of design strips for determining the average one-way internal forces over the width of the strip. This design strip method essentially takes a two-way slab element and applies a simpler one-way approach to determine the required reinforcement needed along the strip length.
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.
The beam is resting on the column and the beam ends at the outer edge of the column. These requirements can be easily fulfilled in an architectural model with solids. In member analysis, simplified line models are used in which center lines meet in a common node. In this article, the influence of member eccentricities on the determination of internal forces is shown on three simple models.
When you perform the subsequent modeling of a beam under an existing floor, the first question arises which forces should be transferred between the downstand beam and the floor and whether a composite effect is the goal. In this case, the floor should rest on the downstand beam without any composite.
Slender bending beams with a large h/w ratio and loaded parallel to the minor axis tend to have stability issues. This is due to the deflection of the compression chord.
The following study compares the wind pressure on a tall building obtained by RWIND Simulation with the results published by Dagnew et al. at the 11th Americas Conference on Wind Engineering in June 2009. In this paper, the Commonwealth Advisory Aeronautical Council (CAARC) building is used as a model and results of several different numerical methods are compared with experimental data obtained from wind-tunnels.
If you read out the results of a surface via the COM interface, you get a one-dimensional field with all results at the FE nodes or grid points. To get the results on the edge of a surface or along a line within the surfaces, you have to filter out the results in the area of the line. The following article describes a function for this step.
In RF-PUNCH Pro, enlarged column heads can be arranged at point-supported punching shear points, thus increasing the shear force resistance of a reinforced concrete floor. In the following article, we will show the punching shear design with the optional application of an enlarged column head.
In order to consider inaccuracies regarding the position of masses in a response spectrum analysis, the standard EN 1998-1 specifies rules which have to be applied in both the simplified and multi-modal response spectrum analysis. These rules describe the following general procedure: The story mass must be shifted by a certain eccentricity, which results in a torsional moment.
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