Frequently Asked Questions (FAQ)

The RWIND installation program allows automated electronic software distribution, also known as a silent (unattended) installation. In the Silent mode, there is no need for a user to monitor the installation and provide input via dialog boxes. The Silent installation runs on its own, without any end-user intervention, which may be very useful when installing RWIND on a large number of computers, for example in a computer classroom.

The silent installation consists of two steps:

1. Recording parameters for the silent install. Run the setup with the -r parameter to select setup options and automatically record the InstallShield Silent Response File (Setup.iss).

2. Running the silent install (repeatedly). Once the Silent Response File is ready, you can run the setup with the -s parameter, which installs RWIND in the silent mode according to parameters stored in the Silent Response File.

Example:

Let's assume that you have downloaded RWIND installation program RWIND_2.02.2230.exe and saved it to N:\Tmp_RWIND directory on a shared network drive. You can then create two batchfiles for the silent install:

Batchfile N:\Tmp_RWIND\Silent_Install_RWIND_Record.bat for recording of installation parameters with content:

"N:\Tmp_RWIND\RWIND_2.02.2230.exe" /a /r /f1"N:\Tmp_RWIND\Setup.iss"

and batchfile N:\Tmp_RWIND\Silent_Install_RWIND_Play.bat for the silent install with content:

"N:\Tmp_RWIND\RWIND_2.02.2230.exe" /a /s /f1"N:\Tmp_RWIND\Setup.iss"

Run Silent_Install_RWIND_Record.bat from one of your computers and create the InstallShield Response File (Setup.iss) in N:\Tmp_RWIND directory. Note that you can also create/edit the response file manually in a text editor (Notepad.exe). After creating the Response file, you can run Silent_Install_RWIND_Play.bat on all other computers to install RWIND silently.

You can also download the batchfiles here FAQ 005346 | Silent Installation RWIND

RWIND_Silent_Install_Batchfiles.zip but remember that you have to modify them according to your real names and paths.

Note that these batchfiles require elevated privileges, i.e. to run the batchfile, click on the file by right mouse button and select "Run as Administrator".

This error message is displayed if you are using a newer version of RSECTION 1 than RFEM 6.

Both versions should be on the same level in order to ensure the data compatibility of both programs, otherwise the new features of RSECTION 1 are not yet available in RFEM 6.

Make sure both versions are up to date.

As of RFEM 5.27, there has been an adjustment in the solver that should better recognize hinge chains, which can make models unstable in the newer versions.

Adjustments in the solver regarding the consideration of line hinges - hinge chains (two surfaces each with a line hinge for the rotation about x on the same line) now lead to instabilities.

Please check your model accordingly.

• Double line hinges
• Line hinges on free surface edges

First, check whether you have activated the Combination Wizard and assigned it to a design situation.

Then, check the settings of the Combination Wizard. To get the automatically generated load combinations, you need to deactivate the "User-defined action combinations" option.

In many cases, Error  1327 describes inconsistencies that arise when transferring the data to the solver. You can proceed as follows:

1. Check whether you are using the current customer version. As an alternative, download the current customer version from the Extranet.
2. Check whether there is enough space available on your hard drive C:\.
3. Contact Dlubal support with the file that contains no results and describe when the error occurs.

If the max/min information is no longer displayed, please check whether you have activated this in the Navigator - Results.

The "Stiffness via fictitious wall" option is only available if you have selected the local axis system of the supported line, not the global coordinate system.

Once you select "Local xyz" under the coordinate system and activate the option, the "Stiffness via fictitious wall" tab becomes available. See also Image 01 and Image 02.

When using couplings/rigid members or members with a cross-section of the Dummy Rigid type, problems often arise when generating models in RWIND. The program stops, giving the warning message shown in Image 01.

However, you still have the option to run a wind simulation for such structures. To do this, deactivate the visibility for the objects concerned, for example, using the View navigator (see Image 02).

Then, in the "Simulate and Generate Wind Loads" dialog box, the "Settings" tab, activate the "Export active objects only" option (see Image 03).

You can then open the model in RWIND or simulate it directly in the background.

The most significant difference between the RWIND 2 Basic vs. Pro options is the simulation type. The Basic edition applies a steady-flow simulation. The Pro edition contains everything that is available in the Basic edition, but also provides new options and features including the transient flow simulation using a more advanced turbulence model (Spalart-Allmaras DDES).

For a full list of features compared in both versions, please refer to the RWIND 2 online manual RWIND Basic and RWIND Pro section with the link below.

By defining load increments, the defined load level can be increased gradually, iterating for each load level until the equilibrium is found. This option is particularly useful for the calculations according to the second-order or large deformation analysis, as finding the equilibrium often turns out to be difficult in the case of large deformations.

A load increment can generally be defined in the structural analysis settings. To do this, open the Structural Analysis Settings and then simply increase the number of load increments. In order to display the intermediate results of the individual load increments in addition to the final load factor, the intermediate results can be displayed using the "Save results of all load increments" function.

To display these load increments animated, there is the option to start an animation in the Results navigator.

This animation element can also be found for several list boxes in the program. In this way, the load cases and load combinations as well as the list boxes in the table can be displayed as an animation.