Nonlinear Structural Analysis Software
Structural FEM Analysis and Design
The structural analysis software RFEM 6 is the reliable basis of a modular program family. Use RFEM to define structures, materials, and loads of planar and spatial structural systems consisting of plates, walls, shells, and members. Are there different elements involved in your project? You can calculate mixed systems as well as the treatment of solid and contact elements.
Structural Frame & Truss Analysis Software
If you want to create pure member structural models, we recommend you the spatial frame & truss analysis program RSTAB 9. With RSTAB, you get a similar range of functions as with the structural FEA software RFEM. The special attention to beam, frame, and truss structures facilitates the user interface and thus also the operation of the software. Many structural engineers have already trusted RSTAB with their structural analysis models – and have been doing so for years. Become one of them!
Consideration of Nonlinear Material Laws
Material behavior is an important factor to be considered in your project. This also includes disproportionate discrepancies, such as the nonlinear behavior of building materials. To model your project as safely and precisely as possible, the Nonlinear Material Behavior add-on for RFEM 6 is a great help. It allows you to consider nonlinear material behavior in RFEM (for example, isotropic plastic, orthotropic plastic, isotropic damage). Use it to avoid any unpleasant surprises.
Plastic Design
The design of cross-sections is an important part of structural analysis. RF‑/STEEL Plasticity is an extension of the RF‑/STEEL EC3 add-on module for RFEM 5 / RSTAB 8. Using this extension, you can effortlessly perform the plastic design of cross-sections according to the partial internal forces method (TSV) and simplex method. Structural analysis can be that simple.
Nonlinear Design of Reinforced Concrete
Do you need a program that can do more? For example, physical and geometrical nonlinear calculation of reinforced concrete beam and plate structures? Then we have the right thing for you: the RF‑CONCRETE NL add-on module for RFEM 5. Moreover, the RF‑CONCRETE Deflect add-on module for RFEM 5 allows for analytical deformation analysis of plate structures consisting of reinforced concrete – exactly what you need. Find out more on these pages:
Interfaces for Data Exchange
The Building Information Modeling (BIM) process is an important part of daily work for structural and civil engineers. That's why we have ensured that the Dlubal structural analysis software can be seamlessly integrated into the BIM process. The large number of interfaces allows you to exchange the data of digital building models with RFEM or RSTAB.
Use the Webservice (a programmable interface) to read or write data from or to RFEM and RSTAB.
Support and Learning
Customer satisfaction is important to us. Therefore, customer service is a fundamental pillar of the Dlubal Software company philosophy. We provide any necessary support you need to complete your daily work. Your Dlubal team is here for you!
Contact Us
Do you have any questions about our products or which are best suited for your design projects? Contact us via phone, email, chat, or forum, or search the FAQ page, available 24/7.
Further Information
Online Manual | RFEM 6
Structural Analysis Models to Download
Select numerous structural models to utilize them for training purposes or for your projects.
Differences Between the Analytical and Nonlinear Deformation Analyses of Reinforced Concrete
Different methods are available for calculating the deformation in the cracked state. RFEM provides an analytical method according to DIN EN 1992-1-1 7.4.3 and a physical-nonlinear analysis.
Nonlinear Material Law for Membranes
In RFEM, there is an option to couple surfaces with the stiffness types "Membrane" and "Membrane Orthotropic" with the material models "Isotropic Nonlinear Elastic 2D/3D" and "Isotropic Plastic 2D/3D" (RF-MAT NL add-on module required).
This functionality enables the simulation of the nonlinear strain behavior of, for example, ETFE foils.
- How does the "Orthotropic Plastic" material model work in RFEM?
- What is the effect of the "Without membrane tension" stiffness type in surface properties?
- I would like to define a line support with ineffective tension and apply the tension force on this line using a nodal support instead. Why does the line support still receive a tension force?
- Can I simulate the cracked state of a concrete cross-section for a bending beam with the "Isotropic Nonlinear Elastic 1D" material model?
- When defining my material, I get Warning No. 1136 and cannot continue working. How can I prevent this warning?
- I have edited the material in my model. When starting the calculation, I get an error message. What can be the reason?
- When entering a new material using the Diagram definition type, the first row is locked. How can I define the material?
- What is the difference between the materials Isotropic Plastic 1D and Isotropic Nonlinear Elastic 1D?
- I have purchased the add-on module RF‑MAT NL, but I cannot find it anywhere.
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Is it possible to set load increments, save each step results, and view at which load increment the material is yielding?
Associated Products
Main Program
Structural engineering software for finite element analysis (FEA) of planar and spatial structural systems consisting of plates, walls, shells, members (beams), solids, and contact elements
3,950.00 EUR
Main Program
Structural engineering software for designing frame, beam, and truss structures, as well as performing linear and nonlinear calculations of internal forces, deformations, and support reactions
2,850.00 EUR
Add-on Module
Consideration of nonlinear material laws
1,450.00 EUR
Module Extension for RF-STEEL EC3
Plastic design of cross-sections according to the Partial Internal Forces Method (PIFM) and Simplex Method
950.00 EUR
Add-on Module
Physical and geometrical nonlinear calculation of beam and plate structures consisting of reinforced concrete
1,450.00 EUR
Add-on Module
Analytical deformation analysis of plate structures consisting of reinforced concrete
450.00 EUR
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