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- One software package for all application areas
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- Proven software used in many well-known projects
Useful Program Features
Dlubal Software programs and add-on modules include a wide range of powerful features.
Since our software is subject to continuous development, we are constantly adding new features. In doing so, we also take account of our customers' wishes.
Why Dlubal Software?
RFEM offers the 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 behaviour of, for example, ETFE foils.
The member hinge nonlinearities "Scaffolding - N phiy phiz" and "Scaffolding Diagram" enable the mechanical simulation of a tube joint with an inner stub between two member elements.
The equivalent model transfers the bending moment via the overpressed outer pipe and after positive locking additionally via the inner stub, depending on the compression state at the member end.
The member type "Dashpot" can be used for time history analyses in RFEM/RSTAB with the add-on modules RF-/DYNAM Pro - Forced Vibrations and RF-/DYNAM Pro - Nonlinear Time History. This linear viscous damping element considers forces dependent on velocity.
With regard to viscoelasticity, the member type "Dashpot" is similar to the Kelvin-Voigt model which consists of the damping element and an elastic spring (both connected in parallel).
The material database in RFEM, RSTAB and SHAPE-THIN contains steels according to the Australian standard AS/NZS 4600:2005.
A structure is created in the graphical user interface typical for CAD programs or by using tables. Right-clicking on graphical or navigator objects activates the shortcut menu, which facilitates creating or editing such objects. The user interface is operated intuitively so the structure and loading objects can be created in a minimal amount of time.
After opening the program, you can define the standard and method according to which the design is performed. The ultimate and the serviceability limit state can be designed according to the linear and the nonlinear calculation method. Load cases, load combinations or result combinations are assigned to different calculation types then. In other input windows, you can define materials and cross‑sections. In addition, it is possible to assign parameters for creep and shrinkage. Creep and shrinkage coefficients are directly adjusted, depending on the age of the concrete.
Support geometry is determined by means of design‑relevant data such as support widths and types (direct, monolithic, end, or intermediate support), redistribution of moments as well as shear force and moment reduction. CONCRETE recognizes the support types from the RSTAB model automatically.
A segmented window includes the specific reinforcement data such as diameters, the concrete cover and curtailment type of reinforcements, number of layers, cutting ability of links and the anchorage type. In the case of the fire resistance design, it is necessary to define the fire resistance class, the fire‑related material properties as well as the cross-section side exposed to fire. Members and sets of members can be summarized in special "reinforcement groups", each defined by different design parameters.
You can adjust the limit value of the maximum crack width in the case of crack width analysis. The geometry of tapers is to be determined additionally for the reinforcement.
In order to work with recurring structural systems efficiently, RFEM provides the parameterized input. You can combine it with a parameterizable guideline method: Structures can be created using particular parameters and adjusted to a new situation by modifying the parameters.
Members can be arranged eccentrically, supported by elastic foundations, or defined as rigid connections. Sets of members facilitate load application on several members.
In RFEM, you can also define eccentricities of surfaces. Here, it is possible to transform nodal and linear loads into surface loads as well as divide surfaces in surface components and members in surfaces.
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