What free open source programs similar to Ansys can you find today

 Ansys is a powerful commercial software suite, so there isn't a single free program that offers all its functionalities. However, depending on your specific needs, here are some free and open-source options that can handle various aspects of structural analysis similar to Ansys:

General Structural Analysis:

• CalculiX: This open-source project provides a complete FEA (Finite Element Analysis) solution with pre/post-processing capabilities and a built-in solver. It's a good option for general linear structural analysis. (https://www.dhondt.de/)
• Elmer/ElmerGrid: Elmer is an open-source multiphysics solver with modules for structural mechanics. ElmerGrid is a separate mesh generator often used with Elmer. This combination allows for complex simulations, but requires more technical expertise. ([invalid URL removed])
• Salome with Code_Aster: Salome is an open-source pre/post-processing platform compatible with various solvers, including Code_Aster, which focuses on structural analysis. This option offers good flexibility but might require learning multiple tools. (https://old.salome-platform.org/)

Specific Analysis Types:

• OpenFOAM: This is a popular open-source toolbox for Computational Fluid Dynamics (CFD) simulations. While not strictly for structural analysis, it can be useful for fluid-structure interaction problems. (https://www.openfoam.com/)

Other Considerations:

• deal.II: This is a comprehensive set of tools for building FEM codes. It's powerful but requires significant programming knowledge and is not ideal for beginners. (https://dealii.org/)
• User-friendliness: Free software often prioritizes functionality over user experience. Consider the learning curve and available documentation when choosing a program.

Tips for Choosing:

• Project complexity: Consider the complexity of your structural analysis project. Simpler models might work well with CalculiX, while complex simulations might require Elmer or Salome with Code_Aster.
• Features needed: Identify the specific features you require (linear vs. non-linear analysis, material properties, etc.). Research which programs offer these functionalities.
• Technical expertise: Evaluate your programming skills and comfort level with technical software. Beginner-friendly interfaces are available in some options like CalculiX.

Remember: Free software may have limitations compared to Ansys. It's crucial to find a balance between features and ease of use for your project.

I hope this helps you find a suitable free or open-source program for your structural analysis needs!

More open-source programs 

In addition to the programs mentioned previously, here are some more free and open-source options for structural analysis that might be useful depending on your needs:

General Structural Analysis:

• FreeFem++: This open-source project provides a platform for building finite element solvers in a high-level scripting language (Scilab or Python). It offers flexibility but requires programming knowledge. ([usunięto nieprawidłowy URL])
• GZShell: This open-source program focuses on shell and plate analysis, ideal for structures like beams, plates, and shells. It's known for its user-friendly interface and good documentation. ([usunięto nieprawidłowy URL])
• OpenSees: This open-source framework allows users to develop and customize finite element tools for structural engineering problems. It's powerful but requires a strong understanding of structural mechanics and programming. (https://opensees.berkeley.edu/)

Specialized Analysis:

• MOOSE: This open-source framework is designed for multi-physics simulations, including structural mechanics coupled with heat transfer or fluid flow. It's a powerful tool for complex problems but requires advanced knowledge. (https://mooseframework.org/)
• XFEM: This isn't a standalone program but an extension for existing FEA software that allows for simulating problems with discontinuities or cracks in materials. Look for XFEM compatibility with programs you're considering.

Additional Resources:

• Open Engineering Suite: This online platform provides access to various open-source engineering tools, including some for structural analysis. ([usunięto nieprawidłowy URL])
• Research papers and forums: Look for research papers using free/open-source software for structural analysis in your field. These can offer valuable insights and program recommendations.

Choosing the Right Program:

Remember, the best free program depends on your specific project requirements:

• Complexity: How complex is your structural model? Simpler models might work with user-friendly options like GZShell, while complex simulations might require more powerful tools like OpenSees.
• Features: Identify essential features like material properties, analysis type (linear vs. non-linear), and pre/post-processing capabilities. Research which programs offer these functionalities.
• Learning Curve: Consider your comfort level with technical software and programming. Some programs like GZShell have user-friendly interfaces, while others require coding skills.

By understanding your project needs and exploring these additional options, you can find a suitable free or open-source program for your structural analysis tasks.

How about PrePoMAX based on Calculix ?

Absolutely, PrePoMax is a great option to consider alongside the other free and open-source programs for structural analysis using CalculiX! Here's a breakdown of PrePoMax and how it fits into your options:

PrePoMax:

• Function: PrePoMax is an open-source pre and post-processor specifically designed for CalculiX. It allows you to:
  • Define geometry (import from various CAD formats)
  • Create and manage finite element meshes
  • Set up material properties and boundary conditions
  • View and analyze results from CalculiX simulations
• Benefits:
  • User-friendly interface: Compared to directly working with CalculiX input files, PrePoMax offers a more intuitive graphical interface for defining your model and analysis parameters.
  • Streamlined workflow: PrePoMax simplifies the process of preparing data for CalculiX and visualizing the results, saving you time and effort.
  • Open-source and free: Being open-source and free to use, PrePoMax is a cost-effective option for structural analysis with CalculiX.

Comparison to Other Programs:

While PrePoMax focuses specifically on pre/post-processing for CalculiX, other programs offer broader functionalities:

• Full FEA Suites (CalculiX + PrePoMax): Combining CalculiX (solver) with PrePoMax (pre/post-processor) provides a complete FEA solution similar to commercial software, but with limitations compared to high-end options.
• Standalone FEA Solvers: Programs like Elmer or OpenSees offer their own built-in pre/post-processing capabilities, eliminating the need for a separate tool like PrePoMax.

Choosing Between PrePoMax and Other Options:

The best choice depends on your needs:

• Do you already use CalculiX? If you're comfortable with CalculiX, PrePoMax will significantly improve your workflow and user experience.
• Do you need a complete FEA suite? If you prefer an all-in-one solution, consider standalone FEA solvers like Elmer. However, these might have a steeper learning curve compared to PrePoMax.
• Project complexity: For simpler models, PrePoMax and CalculiX can be sufficient. Complex simulations might require more powerful standalone solvers.

Overall, PrePoMax is a valuable tool for anyone using CalculiX for structural analysis. Its user-friendly interface and streamlined workflow can significantly improve your efficiency and make CalculiX more accessible.

Here are some additional resources for PrePoMax:

• PrePoMax Website: https://prepomax.fs.um.si/wp-content/uploads/2022/02/PrePoMax-v1.2.1-manual.pdf
• PrePoMax Tutorials: These tutorials demonstrate how to use PrePoMax for various structural analysis tasks. You can find them on YouTube or the PrePoMax website.

I hope this information helps you decide if PrePoMax is the right choice for your structural analysis needs!