Stress Analysis Software
The structural analysis software RFEM is the basis of a modular software system. The main program RFEM is used to define structures, materials, and loads for planar and spatial structural systems consisting of plates, walls, shells and members.
The program also allows you to create combined structures as well as model solid and contact elements.
The structural frame analysis and design program RSTAB contains a similar range of functions as RFEM.
Due to the special attention to frameworks, it is very easy to use and for many years it has been the best choice for structural analysis of reinforced concrete or solid structures.
For design of various materials such as reinforced and prestressed concrete, steel, aluminium, timber, and glass, there is a wide range of powerful add‑modules available for the main program RFEM/RSTAB.
These modules allow you to perform nonlinear, stability and dynamic analyses as well as joint designs and form‑finding processes for cable and membrane structures.
The structural analysis software provided by Dlubal can be seamlessly integrated into the Building Information Modeling (BIM) process. A variety of interfaces allows you to exchange data from digital building models with RFEM or RSTAB.
For a project in Rotterdam, ADS Ertner used IDEA CONNECTION to analyze a structural steel connection. This program calculates steel connections utilizing the CBFEM method where each thin-walled cross-section is modeled with nonlinear material properties, nonlinear bolts, and nonlinear welds.
A new research station was built in East Antarctica for the Indian Ministry of Geosciences in the Antarctic summer months of 2010/11 and 2011/12. Design and planning come from the offices of bof Architekten and IMS Ingenieurgesellschaft in Hamburg, Germany.
The complex structure consists of an enveloping steel structure and a total of 134 special containers, that were integrated to transfer vertical and horizontal loads. The final structural analysis carried out the German engineering office KSF in Bremerhaven.
The temporary structure of a steel maze was created to celebrate the 10th anniversary of the arts center C‑Mine in Genk (Belgium) which is located at the former coal mine of Winterslag.
It took almost one month to install the steel structure at the arts center on an area of 1,400 m2.
A glass pedestrian bridge with a length of 30 m connects the St. Michael hospital with the research center Li Ka Shing Knowledge Institute.
The supporting structure consists of several oval steel rings which are twisted together.
At the end of 2013, the ‘Vechthoeve’ was transported over a distance of 1,640 ft. The wooden house, referred to as the Pippi Longstocking house, is situated close to Amsterdam, the capital of the Netherlands. The villa had to be relocated because of plans to widen the A1 highway.
The New Candlewood Suites on Redstone Arsenal in Huntsville, Alabama, is the first cross‑laminated timber (CLT) hotel constructed in the US.
This four story building, made of 56,700 ft3 of CLT and 1,200 ft3 of glulam material, serves the lodging needs of the Redstone Arsenal Army post.
The Metropol Parasol is a hybrid structure consisting of timber, concrete, steel and composite steel.
The most interesting and impressive part of the building is the accessible timber roof structure consisting of multi-layer glued timber panels of the LVL type Kerto‑Q.
The steel structure of a sluice with flap gate is a part of the new Niederfinow boat lift on the east end of the Oder-Havel canal in Germany.
It was built due to the increasing traffic as the original structure of the oldest working boat lift in Germany was running near to its capacity.
The project for designing a filter/dryer device including agitator required a complete stress and deformation analysis in RFEM.
A special design challenge represented the complex modeling of the structue having 1,424 surfaces, 158 solids and 425 members.
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When designing a steel cross-section according to Eurocode 3, it is important to assign the cross-section to one of the four cross-section classes. Classes 1 and 2 allow for a plastic design, classes 3 and 4 are only for elastic design.
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.
- The design ratio of the cross-section check is different for the RF‑/STEEL and RF‑/STEEL EC3 add-on module. What is the reason?
- How does the "Orthotropic Plastic" material model work in RFEM?
- Why is there no stability analysis displayed in the results despite the activation of the stability analysis in RF‑/STEEL EC3?
- Is it possible to set user-defined values when viewing solid stress results?
- After the design with RF‑/TIMBER Pro, I optimized a cross-section. Why is the utilization of the optimized cross-section exceeded now?
- Why are the stresses of the 90° orientation not displayed for a layer with the orthotropy direction 90° for σb,90 in RF‑LAMINATE?
- In RF‑/STEEL EC3, is the "Elastic design (also for Class 1 and Class 2 cross-sections)" option under "Details → Ultimate Limit State" considered for a stability analysis when activated?
- In the RF‑/STEEL EC3 add-on module, I obtain an extremely high design ratio for a member in the case of "Biaxial bending, shear and axial force." Although the axial force is relatively high, the design ratio seems to be unrealistic. What is the reason?
- Why do I get such a small amount of reinforcement for the upstand beam? The amount of reinforcement for the downstand beams is significantly larger.
- How are the creep and shrinkage for columns considered in RF‑CONCRETE Members?
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
The structural engineering software for design of frame, beam and truss structures, performing linear and nonlinear calculations of internal forces, deformations, and support reactions
Physical and geometrical nonlinear calculation of beam and plate structures consisting of reinforced concrete
Stress analysis of steel surfaces and members
Dynamic analysis of natural frequencies and mode shapes of member, surface, and solid models
Dynamic and seismic analysis including time history analysis and multi-modal response spectrum analysis
Seismic and static load analysis using the multi-modal response spectrum analysis
Nonlinear dynamic analysis to external excitations
Modeling piping systems
Piping design and pipe stress analysis
Design of rigid bolted frame joints according to Eurocode 3 or DIN 18800
Design of pinned connections according to Eurocode 3
Design of hinged and restrained column base footings according to Eurocode 3
Design of indirect timber connections with dowel-type fasteners and steel plates according to NDS and Eurocode 5
Design of Direct Timber Connections According to Eurocode 5
Comparison of results with defined limit values