Dlubal RFEM 5 – Filtering Raster and FE Mesh Points for Better Result Evaluation in RF-CONCRETE Surfaces

Dlubal RFEM 5 - Filtering Raster and FE Mesh Points for Better Result Evaluation in RF-CONCRETE Surfaces

Dlubal RFEM 5 – Filtering Raster and FE Mesh Points for Better Result Evaluation in RF-CONCRETE Surfaces

By Adrian Langhammer, Dlubal Software

In RF-CONCRETE Surfaces, you can use the “Filter Points” function when evaluating results by points. This filter function allows for a user-defined group of points that can be defined in the result window. You can select the filter in the “2.3 Required Reinforcement by Points” window, among others.

For a better location of certain points, you can show their properties in RFEM. For this, select the “Numbering” check box under “Values on Surfaces” in the Project Navigator – Results. Depending on the selection in RF-CONCRETE Surfaces, it is possible to display the results in FE points or in grid points.

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Dlubal RFEM 5 & RSTAB 8 – Consideration of Eccentricities in RF-/JOINTS Timber – Steel to Timber

Dlubal RFEM 5 & RSTAB 8 - Consideration of Eccentricities in RF-/JOINTS Timber - Steel to Timber

Dlubal RFEM 5 & RSTAB 8 – Consideration of Eccentricities in RF-/JOINTS Timber – Steel to Timber

By Bastian Kuhn, Dlubal Software

In RF-/JOINTS Timber – Steel to Timber, it is possible to consider the eccentricities of a connection during the calculation. The figure shows different internal forces without consideration of the eccentricity (above) and with consideration of the eccentricity (below).

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Dlubal RFEM 5 & RSTAB 8 – Different Concrete Class for Bucket and Foundation Plate in RF-/FOUNDATION Pro

Dlubal RFEM 5 & RSTAB 8 - Different Concrete Class for Bucket and Foundation Plate in RF-/FOUNDATION Pro

Dlubal RFEM 5 & RSTAB 8 – Different Concrete Class for Bucket and Foundation Plate in RF-/FOUNDATION Pro

By Paul Kieloch, Dlubal Software

As of version x.04.0096 of RF-/FOUNDATION Pro, it is possible to set a different concrete class for the foundation and the bucket of a bucket foundation.

For this, you need to select either a bucket foundation with rough bucket sides or a bucket foundation with smooth bucket sides.

After you select the bucket foundation, you can “Apply another concrete class for bucket” in the “1.3 Materials” window. Hereafter, the concrete class for the bucket can be separately defined.

This feature is especially useful in the case of a precast structure when the bucket is precast and the foundation plate is made in on-site concrete construction.

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Dlubal RFEM 5 & RSTAB 8 – Connecting Individual Members in RF-/JOINTS Steel – Pinned

Dlubal RFEM 5 & RSTAB 8 - Connecting Individual Members in RF-/JOINTS Steel - Pinned

Dlubal RFEM 5 & RSTAB 8 – Connecting Individual Members in RF-/JOINTS Steel – Pinned

By Sebastian Hawranke, Dlubal Software

In RF-/JOINTS Steel – Pinned, it is possible to design connections without a supporting structure (for example columns). In this case, the beam is connected to an anchor plate. How to define such a connection?

First, select a joint type in the “1.1 General Data” window, for example a fin plate. Anchor plate connection is to be defined in the “1.2 Nodes and Members” window. As a condition, only one member can be connected. There are two options:
a) If the connection is on an end support or it connects a member to a surface, you only have to select the corresponding nodes.
b) If the connection is on a member with an unacceptable cross-section (for example rectangular concrete column), you have to deactivate such a member (see figure).
Now, you can adjust the connection including the anchor plate dimensions in the “1.4 Geometry” window.

Finally, it should also be mentioned that on an anchor plate, only welds and bolts are designed. No anchorage designs are performed.

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Dlubal RFEM 5 – Modeling Castellated Beams

Dlubal RFEM 5 - Modeling Castellated Beams

Dlubal RFEM 5 – Modeling Castellated Beams

By Thomas Günthel, Dlubal Software

The surface modeling of a castellated beam in a typical way can take a lot of time. First, it is necessary to create an I-section and then corresponding holes shapes in a web using the Move/Copy function. Thereafter, the openings are created and the relative mesh refinements are applied. If the whole model is not created as parallel to the principal planes, you have to use a user-defined coordinate system.

Since RFEM provides the “Generate Surfaces from Member” function and the cross-section library including the standardized castellated beams (also in RSTAB), you can save some time and proceed as follows.

First, create a member between two nodes or on a line. In the cross-section library, you can find the “Castellated Beam” type under “Built-up” cross-sections. After you select the cross-section and complete the members, you can create a surface model by right-clicking the member and selecting the “Generate Surfaces from Member” option. The mesh refinement is preset by default. If you want to set a different mesh refinement, you can adjust the settings before you create the mesh refinement using “Tools” -> “Generate Surfaces from Member” -> “Settings”.

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Dlubal RFEM 5 – Line Hinges

Dlubal RFEM 5 - Line Hinges

Dlubal RFEM 5 – Line Hinges

By Walter Fröhlich, Dlubal Software

If it is not possible to transfer all internal forces from one surface to the next, you have to arrange a line hinge. For this, there is the “Edit Surface” dialog box, “Hinges” tab.

Select or specify a spring constant of the respective degrees of freedom to reduce the force transmission in the corresponding direction. The moment hinges or rotational springs reduce the force transmission about the defined axis. In this case, the following axis system applies.

x: Longitudinal direction of the line
The degree of freedom ux reduces the force transmission along the surface edge and fi_x corresponds to a hinge joint.

y: Tangent to the surface
The y-axis is perpendicular to the longitudinal direction of the line hinge and is located in the plane of the last finite element row.

z: Normal to the surface
For curved surfaces, the z-coordinates correspond to the line hinge of the z-axis of the last finite element row before the line hinge.

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Dlubal RFEM 5 & RSTAB 8 – Time Course Monitor in RF-/DYNAM Pro – Forced Vibrations

Dlubal RFEM 5 & RSTAB 8 - Time Course Monitor in RF-/DYNEM Pro - Forced Vibrations

Dlubal RFEM 5 & RSTAB 8 – Time Course Monitor in RF-/DYNEM Pro – Forced Vibrations

By Stefan Frenzel, Dlubal Software

RF-/DYNAM Pro – Forced Vibrations provides the option of a time course monitor. During the evaluation process, you can compare several graphs directly in the program. In addition, you can transfer the figures to the printout report or export them directly to Excel as a value table.

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Dlubal RFEM 5 & RSTAB 8 – Starting Unlicensed Modules in Trial Version

Dlubal RFEM 5 & RSTAB 8 - Starting Unlicensed Modules in Trial Version

Dlubal RFEM 5 & RSTAB 8 – Starting Unlicensed Modules in Trial Version

By René Flori, Dlubal Software

As of version X.04.0058, it is possible to start unlicensed add-on modules as a 30-day trial version in the current full version of the main program. All modules listed in the Project Navigator under “Demo Add-on Modules” are not licensed.

Double-click one of the unlicensed modules to open a query. [YES] activates the trial license, which will be available for 30 days including the complete range of functions. Afterwards, you can still start these modules as a demo version.

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Dlubal CRANEWAY 8 – User-Defined Stiffener Spacing

Dlubal CRANEWAY 8 - User-Defined Stiffener Spacing

Dlubal CRANEWAY 8 – User-Defined Stiffener Spacing

By Steffen Clauß, Dlubal Software

In order to define different stiffener spacing in a span, you can select the “User-defined” option. After clicking in the text box in column C, the […] button is displayed. Click this button to open the dialog box where you can specify the location of stiffeners for the selected span.

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Dlubal RFEM 5 – Automatic Consideration of SLS Designs for Determination of Longitudinal Reinforcement in RF-CONCRETE Surfaces

Dlubal RFEM 5 - Automatic Consideration of SLS Designs for Determination of Longitudinal Reinforcement in RF-CONCRETE Surfaces

Dlubal RFEM 5 – Automatic Consideration of SLS Designs for Determination of Longitudinal Reinforcement in RF-CONCRETE Surfaces

By Moritz Bertram, Dlubal Software

In order to design longitudinal reinforcement for the serviceability limit state, it is necessary to enable this function. This is possible in the “1.1 General Data” window under the “Serviceability Limit State” tab. After you select the “Analytical…” method of check, you can select the corresponding additional options in the section for the determination of longitudinal reinforcement of the “Settings of Analytical Method of Serviceability Limit State Design” window.

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