Analysis & Design Software for Silos and Storage Tanks
Structural engineering FEA software RFEM is the basis of a modular software system. 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.
Use the stand-alone program RWIND Simulation for complex structures. This program simulates wind flows around any structures by means of a digital wind tunnel.
The generated wind loads acting on these objects can be imported to RFEM or RSTAB.
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.
Butadiene storage tanks of the French company ARLANXEO Emulsion Rubber France, one of the biggest producers of synthetic rubber NBR in the world, had to be recalculated to comply with the seismic requirements of Eurocode 8.
Aquamate, a leading manufacturer of corrugated water tanks in Australia, plans to enter the North American market by the end of 2016.
Therefore, it is necessary to verify that the tanks meet all US codes and standards before the end of the year.
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.
On the site of Baumit GmbH in Landsberg/Lech, a second mixing plant for ground building materials was built in 2015.
The steel structure supports the silo grating located at +85 ft which includes a total of 36 silos.
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Silos are used as large containers for storing bulk materials such as agricultural products or source materials as well as intermediates of industrial production. Structural engineering of such structures requires a precise knowledge of the stresses due to particulate solids in the building structure. The standard EN 1991‑4 ‘Actions on Silos and Tanks’  provides general principles and requirements for determining these actions.
3D model of the butadiene storage sphere in RFEM (left) and the mode shape from RF-DYNAM Pro (right)
In SHAPE-THIN 8, the effective cross-section of stiffened buckling panels can be calculated according to EN 1993-1-5, Cl. 4.5.
The critical buckling stress is calculated according to EN 1993-1-5, Annex A.1 for buckling panels with at least 3 longitudinal stiffeners or according to EN 1993-1-5, Annex A.2 for buckling panels with one or two stiffeners in the compression zone. The design for torsional buckling safety is also performed.
- How do I determine wind loads on structures of any shape?
- How can I apply the wind load by an angular function to the surface (for example, a grain silo, curved wall, etc.)?
- I am looking for a way to automatically generate special structures or to call them with parameters.
- How can I additionally model welds for the connection of two surfaces with a contact solid?
- In connection with the calculation according to the large deformation analysis, I get significantly smaller deformations than for the calculation according to the linear static or second-order analysis. How is this possible?
- How can I deduce the axial stress and hoop stress of a circular container?
- How is it possible to consider the real cross-section geometry of member elements in RWIND Simulation?
How can I perform a stability/buckling analysis on a load-bearing structure?
- My aim is to mesh a circular hole plate in a mapped way. Is such a meshing possible in RFEM?
- Is it possible to use RFEM for modeling a channel that is distorted from a rectangular cross-section to a pipe cross-section?
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
Stress analysis of steel surfaces and members
Design of steel members according to Eurocode 3
Module Extension for RF-STEEL EC3 and RF-STEEL AISC
Warping torsion analysis according to the second-order theory with 7 degrees of freedom
Module Extension for RF-STEEL EC3
Plastic design of cross-sections according the Partial Internal Forces Method (PIFM) and Simplex Method
Stability analysis according to the eigenvalue method
Generation of equivalent geometric imperfections and pre-deformed initial structures for nonlinear calculations