Knowledge Base


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  • More than 45,000 users in 95 countries
  • One software package for all application areas
  • Free support provided by experienced engineers
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  • 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.


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  1. Modeling Plug-in Connection

    If you want to calculate the global load bearing capacity of a telescoping boom, for example of a construction machine with members, a special modeling technique with regard to structural connections as shown in the sketch may be useful because of its telescope mechanics.

    A characteristic plug‑in connection like the one shown in the sketch consists of 4 members between 4 nodes. In the overlapping area, two members are overlapping, each connected to the same nodes 2 and 3. To avoid that force is transferred from member 1 across both members (2, 3) to member 4 simultaneously, you have to apply specific member end releases to the overlapping members. In this way, force is transported true to the construction by a force pair on the ends of the overlapping members. A moment release defined on member 3 at node 2 and on member 2 at node 3 is responsible for transferring the bending moment load of the red (1, 2) and green (3, 4) continuous members by a force pair on nodes 2 and 3. Furthermore, an axial force release defined on member 2 at node 3 makes sure that an axial force load will be transferred from the green to the red set of members only at the planned fixation on node 2.

    Generally, RFEM and RSTAB identify overlapping members as modeling errors. They try to correct this arrangement automatically. Therefore, when you use the described way of modeling, you need to set the mode ‘Allow Double Members’ before you create the model.

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Knowledge Base

In addition to our technical support (e.g. via chat), you’ll find resources on our website that may help you with your design using Dlubal Software.

First Steps

First steps

We provide hints and tips to help you get started with the main programs RFEM and RSTAB.

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