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Frequently Asked Questions (FAQ)
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For the RFEM Version 5.17, there is a graphical output (only for line hinges and line releases) and a table output. The latter can be found in the following tables:
- 4.45 Line Hinges - Deformations
- 4.46 Line Hinges - Forces
- 4.47 Member Hinges - Deformations
- 4.48 Member Hinges - Forces
- 4.49 Nodal Releases - Deformations
- 4.50 Nodal Releases - Forces
- 4.51 Line releases - deformations
- 4.52 Line Releases - Forces
The program does not define a fixed length for distributing the boundary line compensation. Rather, the compensation is defined at the boundary line nodes and reacts in conjunction with the integral flattening depending on the geometry and stiffness.In the calculation, the integral flattening considers all compensatory strains on the surface and on the edges with the strains of flattening itself.Deformation Process
With the entry "& refcell" with the syntax "$ table number (cell description)", you can select values from the table. Figure 4.01 shows a member with a length of 4.20 m. The length is shown in Table "1.17 Members" in cell L1. This value can now be used in the parameter list or the formula editor. For this, use the following formula for the system shown in Figure 01: $1.17 (L1)
Reading cells from the results table is not possible because of the circularity.
This requires the RF-CUTTING-PATTERN RFEM add-on module. This calculates and organizes cutting patterns for membrane structures. The boundary conditions of the cutting patterns on the curved geometry are determined by the boundary lines and independent plane or geodesic cutting lines. For detailed information, see the links below and the videos.
This error is displayed when you try to import an update which is older than the last imported update.First, check in the Admin Control Center at http://localhost:1947 in Features if the modules you have purchased are already available.
Provided that not all of the purchased modules are available, please follow the instructions below:Network dongle (hardware dongle):
Please send us the c2v file, which you can create with the RUS tool, see:
https://www.dlubal.com/en-US/support-and-learning/support/faq/001479Network dongle (softlock):Please send us the c2v file, which you can create directly in the Admin Control Center, see:
Depending on the geometric requirements of the bricks, these are integrated into classes 1 - 4. All geometric requirements for the brick classes are listed in Table 3.1 of the EN 1996-1-1. An example of assigning the classes according to the total percentage of the brick holes (% of the gross volume) is as follows:Class 1 (all stones)≤ 25Class 2vertical hole ratio> 25; ≤ 55Class 3vertical hole ratio ≥ 25; ≤ 70Class 4horizontal hole ratio> 25; ≤ 70
The reference height can be defined in the factors for the standard SIA 260. They are set in the general data (see Figure 01). The desired reference height is available in the "Combination Factors" tab.
The planarization process in the RF-CUTTING-PATTERN module is an iterative process that levels the respective cutting regions by minimizing the distortion energy assuming an assigned material behavior.
Simplified, the method compresses the initial geometry in a press under the assumption of a friction-free contact until the stresses from the flattening are in equilibrium with each other.
→ See Video
As this process covers the complete mechanical system of the curved structural component, you can additionally consider the compensation directly as a applied strain load.
Figure 01 - Compensation
Since the strains from the compensation specification interact with the strains from the planarization in the RF-CUTTING-PATTERN Algorithm, this type of compensation consideration is not to be compared with the usual, planar scaling of uncompensated blanks. The consideration of the complete "cutting mechanism" with all strain terms promises a very high-quality geometry.Before the flattening, the integral flattening process defines a coordinate system (warp and weft direction) from the mean orientation of the FE elements and uses the initially defined coordinate system to describe the compensation strain and stiffness, independent of the respective position of the FE elements in the coordinate system orientation. Thus, the comparison shown in the video is only valid for an isotropic linear elastic membrane model.
Edge-strand bonding is applied when the bricks of a wall are not laid on one mortar strip but on two. Apply the mortar to the outer edges of the bearing surfaces of the bricks.
The application of the National Annex is governed by the question whether you can apply boundary strip bonding in a European country. The construction of masonry by edge strip cementing is excluded in the German National Annex. For this reason, the foundation joints in Germany must always be mortared over the entire surface.
You can edit the text size in Image Properties → Color Scale → with Text Factor. Frame size can be adjusted relatively or absolutely. If the frame is larger and covers part of the image, adjust the edges to move the image.
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