Practical Applications Using Python and RFEM 6 | 2D Truss Generator

Technical Article on the Topic Structural Analysis Using Dlubal Software

  • Knowledge Base

Technical Article

The recently introduced WebServices gives users the ability to communicate with RFEM 6 using their programming language of choice. This feature is enhanced with our High Level Functions (HLF) Library. The libraries are available for Python, JavaScript, and C#. This article looks at a practical use case of programming a 2D Truss Generator with Python. "Learning by doing," as the saying goes.

Overview

Using the power of RFEM 6 beyond the Graphical User Interface (GUI) and controlling/automating the model and design process is a considerable advantage. However, the power of programming with RFEM 6 goes beyond mere automatic control. Users can combine the RFEM 6 HLF Library with other popular HLF Libraries to develop custom Applications.

In this article, a 2D Truss Generator will be presented. The 2D Truss Generator was written in Python and utilizes powerful Python Libraries such as PyQt and Numpy in combination with the RFEM HLF. The end result is a GUI, which allows for a flexible truss generation.

Learning the Basics

This article will only highlight portions of code unique to its application in developing the 2D Truss Generator. The basics of Programming with RFEM 6 and Python can be found in our short 6-part video series under the following link:

Following Along

The code for this example can be found in the aforementioned HLF Library (RFEM_Python_Client/Examples/TrussGenerator_2D). The code is provided as open-source and hopefully provides users with inspiration for their own projects. Details on working with the RFEM HLF (for example, cloning the repository) are explained in the video series linked above.

Specific Portions of the Code

Try and Except

As mentioned, this example uses many different libraries in conjunction with the RFEM HLF (for example, Numpy and PyQt5). Should users not have a specific library installed, an "import" command will throw an error. To overcome this potential issue, try and except blocks are used. The "import" falls under the try block and should this fail, the code goes into the except block, which will prompt the user to install the required libraries using pip.

Building the GUI using PyQt5

PQt5 is a library aimed at the creation of GUIs. A large proportion of the code is comprised of the definitions and statements required by PyQt5 for building the 2D Truss Generator GUI.

Documentation for using PyQt5 can be found under their link:

A plethora of tutorials can also be found on YouTube.

Truss Definition

Using the RFEM HLFs, a truss can be defined rapidly. For support on programming a truss, follow the sixth video in the aforementioned video series.

Variables initialized in the PyQt5 definitions are also integrated here as arguments for the RFEM truss definitions. This creates interoperability between the two libraries.

A series of try, except, and if statements are deployed to validate information provided in the GUI.

Final Remarks

The above article seeks to give a brief overview of how a parametric 2D Truss Generator GUI was created. Should extra information be required, please use the comments section on this article and we will be happy to respond.

Author

Björn Steinhagen, B.Sc.

Björn Steinhagen, B.Sc.

Product Engineering

Mr. Steinhagen supports the development and quality assurance of the Dlubal programs.

Keywords

Python Webservice GUI Programming

Links

Write Comment...

Write Comment...

  • Views 764x
  • Updated 24 January 2023

Contact Us

Contact Dlubal

Do you have any further questions or need advice? Contact us via phone, email, chat or forum or search the FAQ page, available 24/7.

+49 (0) 9673 9203-0

[email protected]

New Features of Concrete Design Add-On for RFEM 6 and RSTAB 9

New Features of Concrete Design Add-On for RFEM 6 and RSTAB 9

Webinar 9 February 2023 2:00 PM - 3:00 PM CET

CSA S16:19 Steel Design in RFEM 6

CSA S16:19 Steel Design in RFEM 6 (USA)

Webinar 15 February 2023 2:00 PM - 3:00 PM EDT

Online Training | English

Eurocode 3 | Steel Structures According to DIN EN 1993-1-1

Online Training 2 March 2023 9:00 AM - 1:00 PM CET

Online Training | English

Eurocode 5 | Timber Structures According to DIN EN 1995-1-1

Online Training 16 March 2023 9:00 AM - 1:00 PM CET

Online Training | English

RFEM 6 | Dynamic Analysis and Seismic Design According to EC 8

Online Training 30 March 2023 9:00 AM - 1:00 PM CEST

Masonry Design Using Finite Element Analysis (FEA) in RFEM 6

Masonry Design Using Finite Element Analysis (FEA) in RFEM 6

Webinar 2 February 2023 2:00 PM - 3:00 PM CET

Stability and Warping Torsion Analyses

Stability and Warping Torsion Analyses in RFEM 6 and RSTAB 9

Webinar 26 January 2023 2:00 PM - 3:00 PM CET

Online Training | English

Eurocode 2 | Concrete Structures According to DIN EN 1992-1-1

Online Training 26 January 2023 9:00 AM - 1:00 PM CET

Reinforced Concrete Tank Design \n in RFEM 6

Reinforced Concrete Tank Design in RFEM 6 (USA)

Webinar 19 January 2023 2:00 PM - 3:00 PM EDT

Modeling and Design of CLT Panels in RFEM 6

Modeling and Design of CLT Panels in RFEM 6

Webinar 19 January 2023 2:00 PM - 3:00 PM CET

Online Training | English

RFEM 6 | Basics

Online Training 19 January 2023 9:00 AM - 1:00 PM CET

New Features in RFEM 6 and RSTAB 9

New Features in RFEM 6 and RSTAB 9

Webinar 21 December 2022 2:00 PM - 3:00 PM CET

Revit, IFC, and DXF Integration in RFEM 6 (USA)

Revit, IFC, and DXF Integration in RFEM 6 (USA)

Webinar 15 December 2022 2:00 PM - 3:00 PM EDT

Stress Analysis of Surfaces and Members in RFEM 6

Stress Analysis of Surfaces and Members in RFEM 6

Webinar 15 December 2022 2:00 PM - 3:00 PM CET

Online Training | English

RFEM 6 | Students | Introduction to Reinforced Concrete Design

Online Training 12 December 2022 4:00 PM - 5:00 PM CET

Online Training | English

Eurocode 5 | Timber Structures According to DIN EN 1995-1-1

Online Training 8 December 2022 9:00 AM - 1:00 PM CET

Geotechnical Analysis with Construction Stages in RFEM 6

Geotechnical Analysis with Construction Stages in RFEM 6

Webinar 1 December 2022 2:00 PM - 3:00 PM CET

RFEM 6
Hall with Arched Roof

Main Program

The structural analysis program RFEM 6 is the basis of a modular software system. The main program RFEM 6 is used to define structures, materials, and loads of planar and spatial structural systems consisting of plates, walls, shells, and members. The program can also design combined structures as well as solid and contact elements.

Price of First License
4,450.00 EUR