OOFEM

OOFEM
Original author	Bořek Patzák
Stable release	2.5 / December 30, 2017 (2017-12-30)
Operating system	Unix, Windows
Type	Finite element analysis
License	LGPL
Website	oofem.org

OOFEM is a free and open-source multi-physics finite element code with object oriented architecture. ^[1] The aim of this project is to provide efficient and robust tool for FEM computations as well as to offer highly modular and extensible environment for development. ^[2]

Main features

• Solves various linear and nonlinear problems from structural, thermal and fluid mechanics. ^[3]
• Particularly includes many material models for nonlinear fracture mechanics of quasibrittle materials, such as concrete. ^{[4] [5]}
• Efficient parallel processing support based on domain decomposition and message passing paradigms. ^[6]
• Direct as well as iterative solvers are available. Direct solvers include symmetric and unsymmetric skyline solver and sparse direct solver. Iterative solvers support many sparse storage formats and come with various preconditioners. ^[7] Interfaces to third party linear and eigen value solver libraries are available, including IML, ^[8] PETSc, SLEPc, ^[9] and SPOOLES. ^[10]
• Support for Extended Finite Elements (XFEM) ^[11] and iso-geometric analysis (IGA). ^[12]

License

OOFEM is free, open source software, released under the GNU Lesser General Public License version 2.1 on any later version ^[13]

See also

• List of numerical analysis software
• List of finite element software packages

References

1. B. Patzák and Z. Bittnar: Design of object oriented finite element code, Advances in Engineering Software, 32(10-11), 759-767, 2001
2. OOFEM project website at www.oofem.org
3. OOFEM Features, http://www.oofem.org/en/features/features.html Archived 2013-02-23 at the Wayback Machine
4. OOFEM Material Library Manual, http://www.oofem.org/en/documentation/manual.html Archived 2013-01-17 at the Wayback Machine
5. B. Patzák and M. Jirásek. Adaptive resolution of localized damage in quasibrittle materials. Journal of Engineering Mechanics Division ASCE, 130:720--732, 2004.
6. B. Patzák and D. Rypl. Object-oriented, parallel finite element framework with dynamic load balancing. Advances in Engineering Software, 47(1):35 -- 50, 2012.
7. OOFEM Input Manual, http://www.oofem.org/en/documentation/manual.html Archived 2013-01-17 at the Wayback Machine
8. Template library for numerical iterative methods, http://math.nist.gov/iml++/
9. Scalable Library for Eigenvalue Problem Computations, https://slepc.upv.es/
10. SParse Object Oriented Linear Equations Solver, http://www.netlib.org/linalg/spooles/spooles.2.2.html
11. R. Chamrová and B. Patzák: Object-oriented programming and the extended finite-element method. Engineering and Computational Mechanics, 163(EM4):271--278, 2010.
12. D. Rypl and B. Patzák: From the finite element analysis to the isogeometric analysis in an object oriented computing environment, Advances in Engineering Software, 44(1):116 -- 125, 2012. doi:10.1016/j.advengsoft.2011.05.032.
13. "OOFEM License". Archived from the original on 2013-02-23. Retrieved 2013-02-11.

External links

• Project website

Community resources

• OOFEM forum
• OOFEM wiki