Calculix
Calculix is an open-source finite element analysis application designed for linear and non-linear structural applications. It utilizes an implicit finite element solver with sparse matrix technology for computing structural deformations, stresses, and strains.
fea
structural-analysis
solver
Calculix: Open-Source Finite Element Analysis
An open-source application for linear and non-linear structural analysis with an implicit finite element solver and sparse matrix technology, used for computing deformations, stresses, and strains.
What is Calculix?
Calculix is an open-source finite element analysis suite that was designed to solve field problems numerically, with a focus on mechanical applications. It utilizes the finite element method to compute displacements, stresses, and strains in mechanical systems given various loading conditions.
Some of the key features and capabilities of Calculix include:
- Linear and non-linear structural analysis using implicit finite element solvers
- Pre-processing with GNU preprocessor (CPP), which allows building FE models interactively
- Specialized elements for beams, shells, and plane stress conditions
- Sparse matrix solvers for efficient solutions of large models
- Parallel processing support through MPI implementation
- Interfaces to common CAD packages for importing geometries
- Scripting interface for parametric and automated analyses
Calculix is well-suited for analyzing common engineering designs like mechanical parts, civil structures, and aerospace components. Its open-source nature allows it to be customized and extended as needed. The available interfaces and pre/post-processing features make it accessible even to new users. Overall, Calculix provides a capable and free alternative to commercial FEA packages for a variety of applications.
Calculix Features
Features
- Linear and non-linear structural analysis
- Implicit finite element solver
- Sparse matrix technology
- Pre- and post-processing with CGX
- Thermal analysis
- Coupled thermo-mechanical analysis
- Shape optimization
- Buckling analysis
Pricing
- Open Source
Pros
Free and open source
Wide range of analysis capabilities
Good performance for large models
Integrated pre- and post-processing
Cons
Steep learning curve
Limited documentation and support
Not as user friendly as commercial alternatives
Official Links
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