Product Features


Why Dlubal Software?


  • 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. Foil Cushion with Material Model Isotropic Plastic 2D/3D

    Nonlinear Material Law for Membranes

    RFEM provides the option to couple surfaces with the stiffness types "Membrane" and "Membrane-Orthotropic" with the material models "Isotropic-nonlinearly elastic 2D / 3D" and "Isotropic Plastic 2D / 3D" (add-on module RF-MAT NL required).

    This functionality allows you to simulate the nonlinear strain behavior of z. Eg ETFE films.

  2. Material model - isotropic nonlinear elastic

    RF-MAT NL | Features

    RF-MAT NL provides the following material models:

    Isotropic Plastic 1D/2D/3D and Isotropic Nonlinear Elastic 1D/2D/3D

    You can select three different definition types here:

    • Basic (definition of the equivalent stress under which the material plastifies)
    • Bilinear (definition of the equivalent stress and strain hardening modulus)
    • Diagram:
      • Definition of polygonal stress-strain diagram
      • Option to save / import the diagram
      • Interface with MS Excel
    Orthotropic Plastic 2D/3D (Tsai-Wu 2D/3D)

    This material model allows the definition of material properties (modulus of elasticity, shear modulus, Poisson's ratio) and ultimate strengths (tension, compression, shear) in two or three axes.

    Isotropic Masonry 2D

    It is possible to specify the limit tension stresses σx,limit and σy,limit as well as the hardening factor CH.

    Isotropic Damage 2D/3D

    This material model allows for a definition of asymmetric stress‑strain diagrams. The E modulus is calculated by Ei = (σii-1) / (εii-1) in each step of the stress-strain diagram.

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Contact to Dlubal

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.

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First Steps

First steps

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

Powerful and Capable Software

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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.