anastruct
Finite element analysis of 2D structures
Decision gist · record as of 2026-08-14
Yes, if you are working on 2D structural analysis in Python and can accept a copyleft license. The package is actively maintained, has no known vulnerabilities, and provides a complete FEA workflow for frames and trusses. Install only if your project permits GPL-3.0-or-later licensing; otherwise, seek an alternative with a permissive license.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python >= 3.10; numpy and scipy must be installed.
- Medium install friction due to compiled wheels for multiple Python versions (3.10–3.13) and platforms.
- Active maintenance with a recent commit on 2026-08-07 and no known vulnerabilities.
License · maintenance · safety
GPL-3.0-or-later (copyleft) — GPL-3.0-or-later (copyleft) means any derivative work or distribution must also be open-source under compatible terms; suitable for research and open-source projects but requires careful review in proprietary contexts.
last release 2026-06-06 (69 days) · last repo commit 2026-08-07 · 460 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 119,361 downloads/mo, #12,075 on PyPI
Alternatives
Verify before relying
from anastruct import SystemElements
ss = SystemElements(EA=15000, EI=5000)
ss.add_element(location=[0, 5])
ss.add_support_fixed(node_id=1)
ss.point_load(Fx=30, node_id=2)
ss.solve()
ss.show_bending_moment()- Whether the package supports non-linear analysis beyond the geometrical non-linearity mentioned in the description.
- Performance characteristics and scalability limits for large structures.
- Availability and completeness of the EU, US, UK steel section database.
What it is and what it does
anaStruct is a finite element analysis library for 2D structural systems—frames, trusses, and beams. It computes internal forces (bending moments, shear forces, axial forces) and displacements under various loading conditions. The package supports diverse boundary conditions (fixed, hinged, and spring supports), load types (point loads, distributed loads, dead load), and structural features (hinged elements, rotational springs, non-linear nodes). It relies on numpy and scipy for numerical computation.
The library is designed for structural engineers and researchers analyzing slender 2D structures. It includes visualization tools to display the structure, reactions, internal force diagrams, and deformations. It also provides access to standard steel section databases (EU, US, UK) and supports load cases and combinations, making it suitable for both educational and practical engineering applications.
Use it for
- Analyze a multi-span beam under distributed and point loads to find maximum bending moments and reactions.
- Design a truss structure by computing axial forces in members and checking against allowable stresses.
- Model a frame with spring supports to study the effect of foundation compliance on displacements.
- Perform non-linear water accumulation analysis on a structure to predict load redistribution.
- Verify hand calculations for a simple cantilever or simply-supported beam during design review.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes, if you are working on 2D structural analysis in Python and can accept a copyleft license.
The package is actively maintained, has no known vulnerabilities, and provides a complete FEA workflow for frames and trusses. Install only if your project permits GPL-3.0-or-later licensing; otherwise, seek an alternative with a permissive license.
Install
anastruct on PyPI
Before you install
Medium install friction due to compiled wheels for multiple Python versions (3.10–3.13) and platforms. Active maintenance with a recent commit on 2026-08-07 and no known vulnerabilities.
Requires Python >= 3.10; numpy and scipy must be installed.
License in practice
GPL-3.0-or-later (copyleft) means any derivative work or distribution must also be open-source under compatible terms; suitable for research and open-source projects but requires careful review in proprietary contexts.
Quickstart
from anastruct import SystemElements
ss = SystemElements(EA=15000, EI=5000)
ss.add_element(location=[0, 5])
ss.add_support_fixed(node_id=1)
ss.point_load(Fx=30, node_id=2)
ss.solve()
ss.show_bending_moment()Verify before relying
- Whether the package supports non-linear analysis beyond the geometrical non-linearity mentioned in the description.
- Performance characteristics and scalability limits for large structures.
- Availability and completeness of the EU, US, UK steel section database.
Package facts
| License | GPL-3.0-or-later copyleft |
| Python support | Supports the current Python release >=3.10 |
| Install friction | Medium. Platform-specific wheel |
| Runtime dependencies | 2 packagesnumpyscipy |
| Maintenance | Actively maintained 69 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 119,361 / month, #12,075 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 5 - Production/StableIntended Audience :: Science/ResearchLicense :: OSI Approved :: GNU General Public License v3 (GPLv3)License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)Programming Language :: Python :: 3Programming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.14Topic :: Scientific/EngineeringTopic :: Scientific/Engineering :: PhysicsTopic :: Software Development :: Libraries :: Python Modules |
Evidence: anastruct-1.7.0-cp310-cp310-macosx_10_9_x86_64.whl; anastruct-1.7.0-cp310-cp310-macosx_11_0_arm64.whl; anastruct-1.7.0-cp310-cp310-manylinux1_x86_64.manylinux_2_28_x86_64.manylinux_2_5_x86_64.whl; anastruct-1.7.0-cp310-cp310-manylinux2014_aarch64.manylinux_2_17_aarch64.manylinux_2_28_aarch64.whl; anastruct-1.7.0-cp310-cp310-musllinux_1_2_x86_64.whl; anastruct-1.7.0-cp310-cp310-win_amd64.whl; anastruct-1.7.0-cp311-cp311-macosx_10_9_x86_64.whl; anastruct-1.7.0-cp311-cp311-macosx_11_0_arm64.whl; anastruct-1.7.0-cp311-cp311-manylinux1_x86_64.manylinux_2_28_x86_64.manylinux_2_5_x86_64.whl; anastruct-1.7.0-cp311-cp311-manylinux2014_aarch64.manylinux_2_17_aarch64.manylinux_2_28_aarch64.whl; anastruct-1.7.0-cp311-cp311-musllinux_1_2_x86_64.whl; anastruct-1.7.0-cp311-cp311-win_amd64.whl; anastruct-1.7.0-cp312-cp312-macosx_10_13_x86_64.whl; anastruct-1.7.0-cp312-cp312-macosx_11_0_arm64.whl; anastruct-1.7.0-cp312-cp312-manylinux1_x86_64.manylinux_2_28_x86_64.manylinux_2_5_x86_64.whl; anastruct-1.7.0-cp312-cp312-manylinux2014_aarch64.manylinux_2_17_aarch64.manylinux_2_28_aarch64.whl; anastruct-1.7.0-cp312-cp312-musllinux_1_2_x86_64.whl; anastruct-1.7.0-cp312-cp312-win_amd64.whl; anastruct-1.7.0-cp313-cp313-macosx_10_13_x86_64.whl; anastruct-1.7.0-cp313-cp313-macosx_11_0_arm64.whl
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