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• Over 86,000 users in 95 countries
• One software package for all application areas
• Free support by experienced engineers
• Short learning time and intuitive / self-explanatory software
• Excellent price-performance ratio
• Flexible modular concept that can be extended as required
• Respected and proven software in many well-known projects

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Wind Simulation & Wind Load Generation

With the stand -alone program RWIND Simulation, you can simulate wind flows around simple or complex structures by means of a digital wind tunnel.

The generated wind loads acting on these objects can be imported to RFEM or RSTAB.

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• ### Increased Calculation Performance by Reducing the Nodal Degrees of Freedom

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The number of degrees of freedom in a node is no longer a global calculation parameter in RFEM (6 degrees of freedom for each mesh node in 3D models, 7 degrees of freedom for the warping torsion analysis). Thus, each node is generally considered with a different number of degrees of freedom, which leads to a variable number of equations in the calculation.

This modification speeds up the calculation, especially for models where a significant reduction of the system could be achieved (e.g. trusses and membrane structures).

• ### Considering Rough Model Surfaces in RWIND Simulation

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Utilize the RWIND Simulation program to consider a surface roughness of the model surface by applying a modified wall boundary condition. The numerical model is based on the assumption that grains with a certain diameter are arranged homogeneously on the model surface, similar to a sandpaper. The grain diameter is described with the parameter Ks and the distribution with the parameter Cs. By considering the wall roughness, the numerical flow simulation can capture reality more closely.

• ### Second-Order Numerical Scheme in RWIND Simulation

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The volume space in RWIND Simulation can optionally be discretized with the second-order theory between the cells.

This extended approach usually results in more accurate results despite poorer convergence behavior.

• ### Model Surface Layer Mesh in RWIND Simulation

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The meshing algorithm of RWIND Simulation uses the boundary layer option to mesh the area near the model surface with a voluminous layer mesh. The number of layers is controlled by a user-defined parameter.

This fine mesh in the area of the model surface helps to represent the wind velocity close to the surface.

• ### Multilingual RWIND Simulation User Interface

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The RWIND Simulation program for generating wind loads based on CFD can be utilized in different languages, e.g. in:

• German
• English
• Czech
• Spanish
• French
• Italian
• Polish
• Portuguese
• Russian
• ### Extended Display of Strains in RFEM

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Display extended strains of members, surfaces and solids (e.g. important principal strains, equivalent total strains, etc.) in the Project Navigator - Results in RFEM as well as in Table 4.0.

For example, you can display governing plastic strains when performing the plastic design of connections with surface elements.

• ### Camera Fly Mode

With the view option Camera Fly Mode, you can fly through your RFEM and RSTAB structure. Control the direction and speed of the flight with your keyboard. Additionally, you can save the flight through your structure as a video.

• ### Material Model Orthotropic Masonry 2D

The material model Orthotropic Masonry 2D is an elastoplastic model that additionally allows softening of the material, which can be different in the local x- and y-direction of a surface. The material model is suitable for (unreinforced) masonry walls with in-plane loads.

• ### SHAPE-THIN | Cold-Formed Sections

SHAPE-THIN determines the effective cross-sections according to EN 1993-1-3 and EN 1993-1-5 for cold-formed sections. You can optionally check the geometric conditions for the applicability of the standard specified in EN 1993‑1‑3, Section 5.2.

The effects of local plate buckling are considered according to the method of reduced widths and the possible buckling of stiffeners (instability) is considered for stiffened sections according to EN 1993-1-3, Section 5.5.

As an option, you can perform an iterative calculation to optimize the effective cross-section.

You can display the effective cross-sections graphically.

Read more about designing cold-formed sections with SHAPE-THIN and RF-/STEEL Cold-Formed Sections in this technical article: Design of a Thin-Walled, Cold-Formed C-Section According to EN 1993-1-3.

• ### RF-/STEEL Cold-Formed Sections | Features

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• Available for cold-formed L, Z, C, channel, top-hat, and CL sections from the cross-section database, as well as for cold-formed (non-perforated) SHAPE-THIN 9 cross-sections
• Determination of the effective cross-section considering the local buckling and the distortional buckling
• Cross-section ultimate limit state, stability, and serviceability limit state designs according to EN 1993‑1‑3
• Design of local transverse forces for webs without stiffening
• Available for all National Annexes included in RF-/STEEL EC3
• RF-/STEEL Warping Torsion module extension (license required) for stability analysis according to the second-order analysis as stress analysis including consideration of the 7th degree of freedom (warping)

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