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Methods for analysis and design of composites
High-performance module to calculate properties of laminated composite materials. Usually, this module is used to calculate:
-
A, B, D, E, F, H plane-stress stiffness matrices
- A, B, D, for classical plate theory (CLT, or CLPT)
- A44, A45, A55 for first-order shear deformation theory (FSDT), with the shear correction already applied, by default with the equilibrium approach of Rohwer (1988); also available: Vlachoutsis (1992), Whitney (1973), Chow (1971), Birman and Bert (2002), the thickness-shear frequency of Yang, Norris and Stavsky (1966), and a constant 5/6
- E, F, H for third-order shear deformation theory (TSDT)
-
Transverse shear stresses through the thickness, from the shear forces or recovered a posteriori from the strain gradients of an FSDT solution (Noor and Peters, 1989), with the corresponding transverse shear strain energies
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Material invariants, trace-normalized or not
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Lamination parameters based on material invariants
-
Stiffness matrices (ABD) based on lamination parameters
-
Saving and loading of laminates, plies, materials and lamination parameters in JSON
Documentation
The documentation is available on: https://saullocastro.github.io/composites.
Running in the browser with Pyodide
From version 0.9.20, a WebAssembly wheel is published on PyPI for Pyodide 314
(CPython 3.14), such that composites runs in the browser, e.g. in
JupyterLite or in a web page with Pyodide::
import micropip
await micropip.install('composites')
from composites import laminated_plate, to_json
lam = laminated_plate([0, 45, -45, 90], plyt=0.125e-3,
laminaprop=(142e9, 8.7e9, 0.28, 5.1e9, 5.1e9, 3.2e9))
print(lam.ABD)
s = to_json(lam) # strict JSON, readable with JSON.parse in JavaScript
Citing this repository
Castro, SGP. Methods for analysis and design of composites (Version 0.9.20) [Computer software]. 2026. https://doi.org/10.5281/zenodo.2871782
Bibtex :
@misc{composites2026,
author = {Castro, Saullo G. P.},
doi = {10.5281/zenodo.2871782},
title = {{Methods for analysis and design of composites (Version 0.9.20)}},
year = 2026
}
History
- version 0.1.0, from sub-module of compmech 0.7.2
- version 0.2.2, from sub-module of meshless 0.1.19
- version 0.2.3 onwards: independent of previous packages
- version 0.3.0 onwards: with fast Cython version, not compatible with previous versions
- version 0.4.0 onwards: fast Cython and cimportable by other packages, full compatibility with finite element mass matrices of plates and shells, supporting laminated plates with materials of different densities
- version 0.5.4 onwards: verified lamination parameters, analytical gradients of Aij, Bij, Dij with respect to lamination parameters, supportting MAC-OS
- version 0.5.17 onwards: installing with pip
- version 0.6.0 onwards: cibuildwheel to distribute for Linux
- version 0.7.0 onwards: added Kassapoglou's module
- version 0.8.0 onwards: support for Third-order Shear Deformation Theory (TSDT)
- version 0.9.1 onwards: A44, A45, A55 with the shear correction already applied (Rohwer, 1988), transverse shear stress recovery, picklable Laminate and GradABD, improved Cython and compiler flags (0.9.2), see CHANGELOG.md
- version 0.9.12 onwards: shear correction methods of Whitney (1973), Chow (1971), Birman and Bert (2002) and Yang, Norris and Stavsky (1966), a posteriori transverse shear stresses and energies (Noor and Peters, 1989), Atrans, Dtrans and Ftrans deprecated in favour of Ats, Dts and Fts, see CHANGELOG.md
- version 0.9.20 onwards: saving and loading in JSON, support for Pyodide (WebAssembly) with wheels on PyPI, see CHANGELOG.md
License
Distrubuted under the 3-Clause BSD license (https://raw.github.com/saullocastro/composites/master/LICENSE).
Contact: S.G.P.Castro@tudelft.nl.
1 maintainer
Metadata
1 maintainer
Release files for composites 0.9.20
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | |
|---|---|---|---|
| composites-0.9.20.tar.gz | 468.4 kB | Details |
Built distributions (wheels)
| File | Reset | |||
|---|---|---|---|---|
| composites-0.9.20-cp314-cp314-win_amd64.whl | CPython 3.14 | CPython 3.14 | Windows x86-64 | Details |
| composites-0.9.20-cp314-cp314-pyemscripten_2026_0_wasm32.whl | CPython 3.14 | CPython 3.14 | PyEmscripten 2026.0+ WebAssembly | Details |
| composites-0.9.20-cp313-cp313-win_amd64.whl | CPython 3.13 | CPython 3.13 | Windows x86-64 | Details |
| composites-0.9.20-cp312-cp312-win_amd64.whl | CPython 3.12 | CPython 3.12 | Windows x86-64 | Details |
| composites-0.9.20-cp311-cp311-win_amd64.whl | CPython 3.11 | CPython 3.11 | Windows x86-64 | Details |
| composites-0.9.20-cp311-cp311-manylinux2014_x86_64.manylinux_2_17_x86_64.manylinux_2_28_x86_64.whl | CPython 3.11 | CPython 3.11 | Linux glibc 2.28+ x86-64, Linux glibc 2.17+ x86-64 | Details |
| composites-0.9.20-cp310-cp310-win_amd64.whl | CPython 3.10 | CPython 3.10 | Windows x86-64 | Details |
Total release size: 4.3 MB
Release files / composites-0.9.20.tar.gz
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Release files / composites-0.9.20-cp314-cp314-win_amd64.whl
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Release files / composites-0.9.20-cp313-cp313-win_amd64.whl
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Release files / composites-0.9.20-cp312-cp312-win_amd64.whl
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