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  • Answer

    The cross-section library in RFEM or RSTAB offers the option to import a list of parameterized cross-sections into the user-defined cross-section library with the 'Import Cross-Section Table from File' function.


    Figure 01 - Importing Cross-Section Table from File

    For this task, the cross-section shape to be imported must be compatible with a shape that can already be parameterized in the Dlubal cross-section library (also known as a cross-section table). This cross-section shape then determines the type and order of the import parameters.

    To import a user-defined cross-section table, proceed as follows:

    1. In the Dlubal Cross-Section Library, find a cross-section table that is compatible with the cross-section table that you want to import.

      Here, the parameterizable cross-section types (thin-walled, solid and timber construction) specify the necessary parameters in the correct order for the import directly from the input boxes in the input boxes from top to bottom.

      Figure 02 - Parameters and Sequence of Regular Parametrically Defined Cross-Sections

      For rolled cross-section types, you can find the required parameters in the correct order using the 'Parametric Input' function.

      Figure 03 - Parameters and Sequence of Rolled Parametrically Defined Cross-Sections

    2. Create a CSV table for the cross-section table to be imported, which describes in each line a unique cross-section via the parameters 'Name' + Shape Parameters based on the previously defined parameter list and order.

      The shape parameters must be specified in mm

      Figure 04 - Creation of CSV File

      For reasons of data representation, the individual cross-section names in the CSV file should start with the same Text Fragment as the CSV file name itself. This ensures that the new cross-section table in RFEM or RSTAB bears the name of the CSV file.

    3. Import the CSV file with the cross-section table used into the user-defined cross-section library.

      Figure 05 - Importing Cross-Section Table

    4. Use the cross-sections of the newly imported cross-section table in your models.

      Figure 06 - Use of New User-Defined Cross-Section Table

  • Answer

    In RFEM, it is possible to search for FE mesh nodes using the menu 'Edit'→ 'Find by Number'. An existing FE mesh is of course a prerequisite.
  • Answer

    Unfortunately, the simultaneous processing of RFEM or RSTAB files is not possible. When you open the corresponding file, it is locked and prepared for use in RFEM or RSTAB in the user's local working directory. Any other user can then open the RFEM or RSTAB file as a copy. A multiuser mode is not planned in the medium term.
  • Answer

    You can use the SHAPE-THIN program to assign the cross-section name you want. However, it is important to use the same name for different cross-sections.

    Due to the data structure saved in the program, the program overwrites the profiles with identical descriptions. In this case, the database of the SHAPE-THIN program is linked to the program RFEM and RSTAB. Doubled data storage would inevitably lead to conflicts on the part of the program.

    If the user wants to repeatedly assign identical names, it is possible to delete the file EigProf.dat in the respective directory (e.g. C:\ProgramData\Dlubal\RFEM 5.xx\General Data). This file will be used for saving user-defined profiles.

  • Answer

    You can save the manually or automatically created and adjusted combination schemes and use them in another RSTAB/RFEM file. It is demonstrated by a simple example in the video.
  • Answer

    The directory structure in the Project Manager is administered by the PRO.DLP file. By default, it is located in the folder C:\ProgramData\Dlubal\Global\Project Manager. You can check the directory paths of the project manager in the 'Program Options' dialog box (Project Manager menu 'Edit → Program Options'), see also Figure 1. This database file is available to all users. If you want each user to use a different project structure, you can create a PRO.DLP for each user (for example, PRO_User1.DLP, PRO_User2.DLP). The relevant database file must then be set by the respective user in the program options after carrying out a switch of each user. This is also demonstrated in the video.

  • Answer

    The user-defined materials are available to all users. All users must have full access rights to the path of the user-defined material library.

    User-defined materials are saved in the file Materials_User.dbd. For a standard installation, the file is located in the directory C:\ProgramData\Dlubal\[Program] [Version]\General Data. The file path can also be viewed in the program options (see Figure 1).

  • Answer

    There are two ways to enter cross-sections that are not contained in the cross-section library into the RFEM/RSTAB.

    1. Cross-section programs SHAPE-THIN and SHAPE-MASSIVE 

    User-defined cross-sections can be created by means of the cross-section programs SHAPE-THIN or SHAPE-MASSIVE. The SHAPE-THIN or SHAPE-MASSIVE profiles can be imported via the cross-section library. To do this, click the 'Import Cross-Section from Program SHAPE-THIN' or 'Import Cross-Section from Program SHAPE MASSIVE' in the 'New Cross-Section' dialog box (Figure 1). In this dialog box, it is possible to select and import the desired cross-section. Please note that the cross-sections must be calculated and saved in SHAPE-THIN or SHAPE-MASSIVE before importing the cross-section values. It is only possible to import each cross-section individually.

    2. Creating user-defined cross-section in RFEM/RSTAB 
    If the cross-section values of the manufacturer are known, they can be created in the cross-section database of RFEM/RSTAB using the option 'Create New User-Defined Cross-Section' (Figure 2). In contrast to the cross-sections created with SHAPE-THIN or SHAPE-MASSIVE, these user-defined cross-sections cannot be designed in add-on modules such as RF-/STEEL EC3, because the data necessary for the design - such as c/t-parts - is missing.

    To access the user-defined profiles, click the 'Load Saved User-Defined Cross-Sections' button in the cross-section library (Figure 3).

    User-defined cross-sections are saved across all items in the EigProf.dat file. Even when jumping a version (for example from X.19.XXXX to X.20.XXXX), these cross-sections shall be imported. The storage location of the user-defined cross-section library can be specified in the Program Options (Figure 4). It is possible to copy a user-defined profile database already created on a work center and paste it into the respective directory of the other work center. The user-defined profiles are thus also available on the other work station without having to import them again.
  • Answer

    Maybe the user-defined cross-section library EigProf.dat on your computer is missing or it is corrupted. Please open the "Data Files" tab of the program options and select the "User-Defined Cross‑Section Library" category.

    Open the displayed directory and check whether the EigProf.dat file is available. If the file is available, please rename it.

     

    If the path including the file does not correspond to the default path for RFEM 5.20 "C:\ProgramData\Dlubal\RFEM 5.20\General Data\EigProf.dat," set this default path in Program Options.

  • Answer

    Yes, the problem might also be caused by RFEM. The preview of RFEM files in Windows Explorer may cause Explorer to react more slowly.

    For a possible solution, proceed as follows:

    In C:\Program Files\Common Files\Dlubal, rename the ThmShellEx64.dll file to BACKUP-ThmShellEx64.dll.

    In the case of the 32-bit version, rename the ThmShellEx.dll file in C:\Program Files (x86)\Common Files\Dlubal to BACKUP-ThmShellEx.dll.

    Finally, it is necessary to restart your PC.

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First Steps

First steps

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Wind Simulation & Wind Load Generation

With the stand-alone program RWIND Simulation, wind flows around simple or complex structures can be simulated 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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