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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
  • Short learning time and intuitive handling
  • Excellent price/performance ratio
  • Flexible modular concept, extensible according to your needs
  • Scalable license system with single and network licenses
  • Proven software used in many well-known projects

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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.

  1. Warping Torsion Analysis in RF-/STEEL AISC

    Due to the integrated RF-/STEEL Warping Torsion module extension, it is possible to perform the design according to Design Guide 9 in RF-/STEEL AISC.

    The calculation is performed with 7 degrees of freedom according to the warping torsion theory and enables a realistic stability design including consideration of torsion.

  2. Eigenvalue Solver for Member Design in RF-/STEEL AISC

    The determination of the critical buckling moment is carried out in RF-/STEEL AISC by using the eigenvalue solver which allows an exact determination of the critical buckling load.

    The eigenvalue solver shows a display window of the eigenvalue graphics which enables check of the boundary conditions.

  3. Consideration of Lateral Intermediate Supports in RF-/STEEL AISC

    In STEEL AISC, it is possible to consider lateral intermediate supports at any location. For example, it is possible to stabilize only the upper flange.

    Furthermore, user-defined lateral intermediate supports can be assigned, for example single rotational springs and translational springs at any location at the cross-section.

  4. RF-/STEEL AISC | Features

    • Design of members and sets of members for tension, compression, bending, shear, combined internal forces, and torsion
    • Stability analysis of buckling, torsional-flexural and lateral-torsional buckling
    • Automatic determination of critical buckling loads and critical buckling moments for general load applications and support conditions by means of a special FEA program (eigenvalue analysis) integrated in the module
    • Alternative analytical calculation of the critical buckling moment for standard situations
    • Optional application of discrete lateral supports to beams and continuous members
    • Automatic cross-section classification (compact, noncompact, and slender)
    • Serviceability limit state design (deflection)
    • Cross-section optimization
    • Wide range of cross-sections available, for example rolled I-sections, C-sections, T-sections, angles, rectangular and circular hollow sections, round bars, symmetrical, asymmetrical and parameterized I- and T-sections as well as angles and double angles
    • Clearly arranged input and result windows
    • Detailed result documentation with references to the design equations used and described in the standard
    • Various filter and sorting options of results including result lists by member, cross-sections, x-location, or by load case, load and result combination
    • Result window of member slenderness and governing internal forces
    • Parts list with weight and solid specifications
    • Smooth integration in RFEM/RSTAB
    • Metric and imperial units
  5. Working with RF-/STEEL AISC

    First, it is necessary to decide whether to perform design according to ASD or LRFD. Then, you can enter the load cases, load combinations, and result combinations to be designed. Load combinations according to ASCE 7 can be generated either manually or automatically in RFEM/RSTAB.

    Further specifications include presetting of lateral intermediate supports, effective lengths, and other standard-specific design parameters such as the modification factor Cb for lateral-torsional buckling or the shear lag factor. In the case of continuous members, it is possible to define individual support conditions and eccentricities of each intermediate node of single members. A special FEA tool determines critical loads and moments required for the stability analysis.

    In connection with RFEM/RSTAB, it is possible to apply the Direct Analysis Method taking into account the influence of the general calculation according to the second-order analysis. In this way, you avoid using special enlargement factors.

  6. RF-/STEEL AISC | Results

    The first results window shows the maximum design ratios with the corresponding design of each designed load case, load combination, or result combination.

    The other result windows list all detailed results sorted by specific subject in extendable tree menus. All intermediate results along a member can be displayed at any location. In this way, you can easily retrace how the module has performed the individual designs.

    The complete module data is part of the RFEM/RSTAB printout report. You can select the report contents and the extent of the results specifically for the individual designs.

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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.

+49 9673 9203 0

info@dlubal.com

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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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.