CalculiX

CalculiX, developed by Charly Piva, is a robust package tailored to solve complex field problems using the finite element method. The latest version, 2.3.001, provides extensive features where users can build, calculate, and post-process Finite Element Models. This software is particularly valuable in the Photo & Graphics realm, falling under the Viewers & Editors category. With support for Windows XP, and Vista, it ensures a versatile experience for users operating on these platforms.

The interactive 3D-tool for pre- and post-processing leverages the power of the openGL API, making it intuitive and efficient for both linear and non-linear calculations. Various solutions are available, including static, dynamic, and thermal, which significantly contribute to the versatility of the program. CalculiX can work independently, with its solver able to handle input formats from abaqus, enabling compatibility with commercial pre-processors. This flexibility extends to the pre-processor, which can output mesh-related data compatible with nastran, abaqus, ansys, code-aster, and free-cfd codes like duns, ISAAC, and OpenFOAM.

CalculiX stands out with its freeware license, making it a cost-effective solution for users who often seek "free download" options for such complex tools. Besides the latest version, previous versions like 2.3, 2.1, and 2.0 are also available, ensuring backward compatibility and a range of choices for users with different system configurations and needs.

Despite its strong points, users should note that CalculiX is designed to run not only on Windows but also on Unix platforms such as Linux and Irix, adding to its versatility for different operating environments.

Pros:

• Comprehensive pre- and post-processing capabilities using openGL API.
• Handles both linear and non-linear calculations with static, dynamic, and thermal solutions.
• Excellent compatibility with commercial pre-processors and various finite element formats.
• Freeware license, making it a cost-effective solution.
• Versatile usage on both Windows XP/Vista and Unix platforms.

Cons:

• May have a steep learning curve for beginners.
• Limited to photo and graphics viewing and editing, which might not suit users seeking broader functionalities.

It is not possible to confirm if there is a free download for this software available on the developer's website. We cannot guarantee that the program is safe to download as it will be downloaded from the developer's website. Before launching the program, check it with any free antivirus software.

You may want to check out more software, such as Montagne, ImageVisu or ZoomMagic, which might be similar to CalculiX.