# Knowledge Base

#### Why Dlubal Software?

• More than 86,000 users in 95 countries
• One software package for all application areas
• Free support provided by experienced engineers
• Short learning time and intuitive handling
• Excellent price/performance ratio
• Flexible modular concept, extensible according to your needs
• Proven software used in many well-known projects

#### 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.

Receive information including news, useful tips, scheduled events, special offers, and vouchers on a regular basis.

1 - 10 of 52

Sort by:

Items:

• ## Block and tackle pulley system | Options and Modeling

This article describes the basic principles and modeling approaches of pulley systems in RFEM.

• ## Coupling Members with Surfaces in RFEM

Pay particular attention to connection points of members and surfaces when you deal with mixed systems because not all internal forces can always be transferred without difficulty at the coupling location.

• ## Properties and Calculation of Result Values of Line Supports

When evaluating line support forces, implausible diagrams sometimes arise at first sight. In particular, for variable loads at locations that also have a nodal support, at division points and edge locations of supported lines, the results show sometimes unexpected support reactions. Using the function of the linear smooth distribution in the Project Navigator - Display does not always lead to the expected result diagram.

• ## Differences in Determining Internal Forces of Downstand Beams

When performing control calculations and comparing the internal forces and the resulting required reinforcement of downstand beams, it might happen that large differences occur. Although the same load assumptions and spans are applied, some programs or the manual calculation display very differently internal forces compared to the FEA model. The differences already occur in the case of the centric member and without considering the internal forces components from the possible effective slab widths.

• ## Modelling Approaches for Shear/Hole Bearing Connections by Means of FEA

For more detailed investigations of shear/hole bearing connections or their immediate environment, the definition of the non-linear contact problem plays an important role. This article uses a solid model to search for comparable and simplified surface models.
• ## Determination of Wind Loads for Canopy Roof Structures According to EN 1991-1-4

If a canopy roof, for example a filling station roof, should be designed, a load determination having regard to Section 7.3 of EN 1991-1-4 is required. This article shows with an example the design of a slightly inclined troughed roof.

• ## FEM Modeling Approaches of Rigid Connections

Especially when the adjacent area of connection points should be analyzed, the geometry or load of the connection does not correspond to the standard specifications and/or a structure should be analyzed with an FE model (for example in plant engineering), it is necessary to evaluate the connections in detail on the FE model.
• ## Calculation Example of Rigid End Plate Connection According to EN 1993-1-8

In this example, design resistance of an end plate according to EN 1993-1-8 [1] is to be determined; the other components are not described here. To check the results, the dimensions of the connection IH 3.1 B 30 24 of Typified Connections [2] were used. The material S 235 and bolts with the strength 10.9 are used.

• ## Analysis of Load-Bearing Capacity of Bolted Frame Joints According to EC 3-1-8

When designing bending-resistant connections from I-beams, the connection is dissolved into the individual parts. For these basic components of a joint, there are separate formula calculators for load-bearing capacity and stiffness. In RFEM and RSTAB, it is possible to design frame joints using the RF-/FRAME-JOINT Pro add-on module.

• ## Considering Member and Surface Eccentricities

In the case of a parallel offset of the structural plane of members and surfaces, or in the case of applying an axial offset to members, the function of eccentricities may be useful.

1 - 10 of 52

Do you have questions or need advice?
Contact our free e-mail, chat, or forum support or find various suggested solutions and useful tips on our FAQ page.